Boundary Descriptions and Names of Regions, Subregions, Accounting Units and Cataloging Units from the 1987 USGS Water-Supply Paper 2294
Please note: HUC numbers have changed since publication of
WSP 2294 from 1987.
Boundary Descriptions and Names of Regions, Subregions,
Accounting Units and Cataloging Units
Region 01 New England Region -- The drainage within the United States
that ultimately discharges into: (a) the Bay of Fundy; (b)
the Atlantic Ocean within and between the states of Maine
and Connecticut; (c) Long Island Sound north of the New
York-Connecticut state line; and (d) the Riviere St. Francois,
a tributary of the St. Lawrence River. Includes all of Maine,
New Hampshire and Rhode Island and parts of Connecticut,
Massachusetts, New York, and Vermont.
Subregion 0101 -- St. John: The St. John River Basin within the
United States. Maine.
Area = 7330 sq.mi.
Accounting Unit 010100 -- St. John. Maine.
Area = 7330 sq.mi.
Cataloging Units 01010001 -- Upper St. John. Maine.
Area = 2120 sq.mi.
01010002 -- Allagash. Maine.
Area = 1250 sq.mi.
01010003 -- Fish. Maine.
Area = 908 sq.mi.
01010004 -- Aroostook. Maine.
Area = 2420 sq.mi.
01010005 -- Meduxnekeag. Maine.
Area = 634 sq.mi.
Subregion 0102 -- Penobscot: The Penobscot River Basin. Maine.
Area = 8610 sq.mi.
Accounting Unit 010200 -- Penobscot. Maine.
Area = 8610 sq.mi.
Cataloging Units 01020001 -- West Branch Penobscot. Maine.
Area = 2150 sq.mi.
01020002 -- East Branch Penobscot. Maine.
Area = 1130 sq.mi.
01020003 -- Mattawamkeag. Maine.
Area = 1510 sq.mi.
01020004 -- Piscataquis. Maine.
Area = 1460 sq.mi.
01020005 -- Lower Penobscot. Maine.
Area = 2360 sq.mi.
Subregion 0103 -- Kennebec: The Kennebec River Basin,
including part of Merrymeeting Bay. Maine.
Area = 5900 sq.mi.
Accounting Unit 010300 -- Kennebec. Maine.
Area = 5900 sq.mi.
Cataloging Units 01030001 -- Upper Kennebec. Maine.
Area = 1570 sq.mi.
01030002 -- Dead. Maine.
Area = 878 sq.mi.
01030003 -- Lower Kennebec. Maine.
Area = 3450 sq.mi.
Subregion 0104 -- Androscoggin: The Androscoggin River Basin,
including part of Merrymeeting Bay. Maine,
New Hampshire.
Area = 3530 sq.mi.
Accounting Unit 010400 -- Androscoggin. Maine, New Hampshire.
Area = 3530 sq.mi.
Cataloging Units 01040001 -- Upper Androscoggin. Maine,
New Hampshire.
Area = 1470 sq.mi.
01040002 -- Lower Androscoggin. Maine,
New Hampshire.
Area = 2060 sq.mi.
Subregion 0105 -- Maine Coastal: The coastal drainage and associated
waters from the Maine-New Brunswick international
boundary to Cape Small, Maine, including the
St. Croix River Basin within the United States.
Maine.
Area = 7130 sq.mi.
Accounting Unit 010500 -- Maine Coastal. Maine.
Area = 7130 sq.mi.
Cataloging Units 01050001 -- St. Croix. Maine.
Area = 999 sq.mi.
01050002 -- Maine Coastal. Maine.
Area = 4880 sq.mi.
01050003 -- St. George-Sheepscot. Maine.
Area = 1250 sq.mi.
Subregion 0106 -- Saco: The coastal drainage and associated waters
from Cape Small, Maine to the Merrimack River
Basin Boundary. Maine, New Hampshire,
Massachusetts.
Area = 4330 sq.mi.
Accounting Unit 010600 -- Saco. Maine, New Hampshire, Massachusetts.
Area = 4330 sq.mi.
Cataloging Units 01060001 -- Presumpscot. Maine.
Area = 1240 sq.mi.
01060002 -- Saco. Maine, New Hampshire.
Area = 1690 sq.mi.
01060003 -- Piscataqua-Salmon Falls. Maine,
New Hampshire, Massachusetts.
Area = 1400 sq.mi.
Subregion 0107 -- Merrimack: The Merrimack River Basin.
Massachusetts, New Hampshire.
Area = 4980 sq.mi.
Accounting Unit 010700 -- Merrimack. Massachusetts, New Hampshire.
Area = 4980 sq.mi.
Cataloging Units 01070001 -- Pemigewasset. New Hampshire.
Area = 1000 sq.mi.
01070002 -- Merrimack. Massachusetts,
New Hampshire.
Area = 2300 sq.mi.
01070003 -- Contoocook. New Hampshire.
Area = 757 sq.mi.
01070004 -- Nashua. Massachusetts,
New Hampshire.
Area = 525 sq.mi.
01070005 -- Concord. Massachusetts.
Area = 401 sq.mi.
Subregion 0108 -- Connecticut: The Connecticut River Basin.
Connecticut, Massachusetts, New Hampshire,
Vermont.
Area = 11100 sq.mi.
Accounting Unit 010801 -- Upper Connecticut: The Connecticut River
Basin above Vernon Dam. New Hamsphire,
Vermont.
Area = 6120 sq.mi.
Cataloging Units 01080101 -- Upper Connecticut. New Hampshire,
Vermont.
Area = 1990 sq.mi.
01080102 -- Passumpsic. Vermont.
Area = 496 sq.mi.
01080103 -- Waits. Vermont.
Area = 441 sq.mi.
01080104 -- Upper Connecticut-Mascoma.
New Hampshire, Vermont.
Area = 1460 sq.mi.
01080105 -- White. Vermont.
Area = 703 sq.mi.
01080106 -- Black-Ottauquechee. Vermont.
Area = 418 sq.mi.
01080107 -- West. Vermont.
Area = 612 sq.mi.
Accounting Unit 010802 -- Lower Connecticut: The Connecticut River
Basin below Vernon Dam. Connecticut,
Massachusetts, New Hampshire, Vermont.
Area = 4960 sq.mi.
Cataloging Units 01080201 -- Middle Connecticut. Massachusetts,
New Hampshire, Vermont.
Area = 999 sq.mi.
01080202 -- Miller. Massachusetts,
New Hampshire.
Area = 391 sq.mi.
01080203 -- Deerfield. Massachusetts, Vermont.
Area = 658 sq.mi.
01080204 -- Chicopee. Massachusetts.
Area = 725 sq.mi.
01080205 -- Lower Connecticut. Connecticut,
Massachusetts.
Area = 1090 sq.mi.
01080206 -- Westfield. Connecticut,
Massachusetts.
Area = 505 sq.mi.
01080207 -- Farmington. Connecticut,
Massachusetts.
Area = 590 sq.mi.
Subregion 0109 -- Massachusetts-Rhode Island Coastal: The coastal
drainage and associated waters from the Merrimack
River Basin boundary to and including the
Pawcatuck River Basin. Connecticut, Massachusetts,
Rhode Island.
Area = 5510 sq.mi.
Accounting Unit 010900 -- Massachusetts-Rhode Island Coastal.
Connecticut, Massachusetts, Rhode Island.
Area = 5510 sq.mi.
Cataloging Units 01090001 -- Charles. Massachusetts.
Area = 1130 sq.mi.
01090002 -- Cape Cod. Massachusetts,
Rhode Island.
Area = 2220 sq.mi.
01090003 -- Blackstone. Massachusetts,
Rhode Island.
Area = 451 sq.mi.
01090004 -- Narragansett. Massachusetts,
Rhode Island.
Area = 1330 sq.mi.
01090005 -- Pawcatuck-Wood. Connecticut,
Rhode Island.
Area = 383 sq.mi.
Subregion 0110 -- Connecticut Coastal: The coastal drainage into
Long Island Sound from the Pawcatuck River Basin
boundary to and including the Byram River Basin,
excluding the Connecticut River Basin,
and including Long Island Sound north of the
New York-Connecticut state line. Connecticut,
Massachusetts, New York, Rhode Island.
Area = 5080 sq.mi.
Accounting Unit 011000 -- Connecticut Coastal. Connecticut,
Massachusetts, New York, Rhode Island.
Area = 5080 sq.mi.
Cataloging Units 01100001 -- Quinebaug. Connecticut,
Massachusetts, Rhode Island.
Area = 729 sq.mi.
01100002 -- Shetucket. Connecticut,
Massachusetts.
Area = 517 sq.mi.
01100003 -- Thames. Connecticut.
Area = 381 sq.mi.
01100004 -- Quinnipiac. Connecticut.
Area = 516 sq.mi.
01100005 -- Housatonic. Connecticut,
Massachusetts, New York.
Area = 1930 sq.mi.
01100006 -- Saugatuck. Connecticut, New York.
Area = 436 sq.mi.
01100007 -- Long Island Sound. Connecticut.
Area = 568 sq.mi.
Subregion 0111 -- St. Francois: The Riviere St. Francois Basin within
the United States. Vermont.
Area = 590 sq.mi.
Accounting Unit 011100 -- St. Francois. Vermont.
Area = 590 sq.mi.
Cataloging Unit 01110000 -- St. Francois. Vermont.
Area = 590 sq.mi.
Region 02 Mid-Atlantic Region -- The drainage within the United States
that ultimately discharges into: (a) the Atlantic Ocean
within and between the states of New York and Virginia; (b)
Long Island Sound south of the New York-Connecticut State
Line; and (c) the Riviere Richelieu, a tributary of the St.
Lawrence River. Includes all of Delaware and New Jersey and
the District of Columbia, and parts of Connecticut, Maryland,
Massachusetts, New York, Pennsylvania, Vermont, Virginia, and
West Virginia.
Subregion 0201 -- Richelieu: The Riviere Richelieu Basin, including
Lake Champlain drainage, within the United States.
New York, Vermont.
Area = 7720 sq.mi.
Accounting Unit 020100 -- Richelieu. New York, Vermont.
Area = 7720 sq.mi.
Cataloging Units 02010001 -- Lake George. New York, Vermont.
Area = 1390 sq.mi.
02010002 -- Otter. Vermont.
Area = 1090 sq.mi.
02010003 -- Winooski. Vermont.
Area = 1220 sq.mi.
02010004 -- Ausable. New York.
Area = 1070 sq.mi.
02010005 -- Lamoille. Vermont.
Area = 1130 sq.mi.
02010006 -- Great Chazy-Saranac. New York.
Area = 1110 sq.mi.
02010007 -- Missisquoi. Vermont.
Area = 707 sq.mi.
Subregion 0202 -- Upper Hudson: The Hudson River Basin to and
including the Popolopen Brook Basin just upstream
from Bear Mountain Bridge. New Jersey, New York,
Massachusetts, Vermont.
Area = 12500 sq.mi.
Accounting Unit 020200 -- Upper Hudson. New Jersey, New York,
Massachusetts, Vermont.
Area = 12500 sq.mi.
Cataloging Units 02020001 -- Upper Hudson. New York.
Area = 1630 sq.mi.
02020002 -- Sacandaga. New York.
Area = 1050 sq.mi.
02020003 -- Hudson-Hoosic. New York,
Massachusetts, Vermont.
Area = 1880 sq.mi.
02020004 -- Mohawk. New York.
Area = 2550 sq.mi.
02020005 -- Schoharie. New York.
Area = 927 sq.mi.
02020006 -- Middle Hudson. Massachusetts,
New York.
Area = 2390 sq.mi.
02020007 -- Rondout. New Jersey, New York.
Area = 1190 sq.mi.
02020008 -- Hudson-Wappinger. New York.
Area = 928 sq.mi.
Subregion 0203 -- Lower Hudson-Long Island: The coastal drainage and
associated waters from the Byram River Basin
boundary, to the Manasquan River Basin boundary,
including the Hudson River Basin downstream from
the Popolopen Brook Basin boundary, Long Island
and Block Island Sounds south of the New York-
Connecticut state line, and Long Island.
Connecticut, New Jersey, New York.
Area = 6360 sq.mi.
Accounting Unit 020301 -- Lower Hudson: The coastal drainage and
associated waters from the Byram River
Basin boundary, to the Manasquan River
Basin boundary, including the Hudson
River Basin downstream from the Popolopen
Brook Basin boundary, and Long Island
Sound in Westchester and Bronx Counties,
New York, but excluding Long Island and
Block Island Sounds south of the New York-
Connecticut state line and Long Island.
Connecticut, New Jersey, New York.
Area = 3790 sq.mi.
Cataloging Units 02030101 -- Lower Hudson. Connecticut, New
Jersey, New York.
Area = 720 sq.mi.
02030102 -- Bronx. New York.
Area = 190 sq.mi.
02030103 -- Hackensack-Passaic. New Jersey,
New York.
Area = 1120 sq.mi.
02030104 -- Sandy Hook-Staten Island.
New Jersey, New York.
Area = 679 sq.mi.
02030105 -- Raritan. New Jersey.
Area = 1080 sq.mi.
Accounting Unit 020302 -- Long Island: Long Island and Long Island
and Block Island Sounds south of the New
York-Connecticut state line, but excluding
Long Island Sound in Westchester and Bronx
Counties, New York. New York.
Area = 2580 sq.mi.
Cataloging Units 02030201 -- Northern Long Island. New York.
Area = 915 sq.mi.
02030202 -- Southern Long Island. New York.
Area = 1660 sq.mi.
Subregion 0204 -- Delaware: The coastal drainage and associated waters
from and including the Manasquan River Basin to and
including the Delaware River Basin which includes
Delaware Bay. Delaware, Maryland, New Jersey,
New York, Pennsylvania.
Area = 15500 sq.mi.
Accounting Unit 020401 -- Upper Delaware: The Delaware River Basin
upstream from the fall line (highest tidal
effect of the Delaware River) at Trenton,
New Jersey. New Jersey, New York,
Pennsylvania.
Area = 6800 sq.mi.
Cataloging Units 02040101 -- Upper Delaware. New York,
Pennsylvania.
Area = 1180 sq.mi.
02040102 -- East Branch Delaware. New York.
Area = 828 sq.mi.
02040103 -- Lackawaxen. Pennsylvania.
Area = 587 sq.mi.
02040104 -- Middle Delaware-Mongaup-Brodhead.
New Jersey, New York, Pennsylvania.
Area = 1520 sq.mi.
02040105 -- Middle Delaware-Musconetcong. New
Jersey, Pennsylvania.
Area = 1330 sq.mi.
02040106 -- Lehigh. Pennsylvania.
Area = 1350 sq.mi.
Accounting Unit 020402 -- Lower Delaware: The Delaware River Basin
downstream from the fall line at Trenton,
New Jersey, including Delaware Bay.
Delaware, Maryland, New Jersey,
Pennsylvania.
Area = 6650 sq.mi.
Cataloging Units 02040201 -- Crosswicks-Neshaminy. New Jersey,
Pennsylvania.
Area = 521 sq.mi.
02040202 -- Lower Delaware. New Jersey,
Pennsylvania.
Area = 1050 sq.mi.
02040203 -- Schuylkill. Pennsylvania.
Area = 1900 sq.mi.
02040204 -- Delaware Bay. New Jersey.
Area = 744 sq.mi.
02040205 -- Brandywine-Christina. Delaware,
Maryland, Pennsylvania.
Area = 745 sq.mi.
02040206 -- Cohansey-Maurice. New Jersey.
Area = 1060 sq.mi.
02040207 -- Broadkill-Smyrna. Delaware.
Area = 628 sq.mi.
Accounting Unit 020403 -- New Jersey Coastal: The coastal drainage
in New Jersey from and including the
Manasquan River Basin to the Delaware Bay
drainage boundary. New Jersey.
Area = 2070 sq.mi.
Cataloging Units 02040301 -- Mullica-Toms. New Jersey
Area = 1350 sq.mi.
02040302 -- Great Egg Harbor. New Jersey.
Area = 717 sq.mi.
Subregion 0205 -- Susquehanna: The Susquehanna River Basin. Maryland,
New York, Pennsylvania.
Area = 27200 sq.mi.
Accounting Unit 020501 -- Upper Susquehanna: The Susquehanna River
Basin above the confluence with the West
Branch Susquenhanna River Basin. New York,
Pennsylvania.
Area = 11200 sq.mi.
Cataloging Units 02050101 -- Upper Susquehanna. New York,
Pennsylvania.
Area = 2260 sq.mi.
02050102 -- Chenango. New York.
Area = 1580 sq.mi.
02050103 -- Owego-Wappasening. New York,
Pennsylvania.
Area = 1040 sq.mi.
02050104 -- Tioga. New York, Pennsylvania.
Area = 1370 sq.mi.
02050105 -- Chemung. New York, Pennsylvania.
Area = 1200 sq.mi.
02050106 -- Upper Susquehanna-Tunkhannock.
Pennsylvania.
Area = 1980 sq.mi.
02050107 -- Upper Susquehanna-Lackawanna.
Pennsylvania.
Area = 1760 sq.mi.
Accounting Unit 020502 -- West Branch Susquehanna: The West Branch
Susquehanna River Basin.
Pennsylvania.
Area = 6920 sq.mi.
Cataloging Units 02050201 -- Upper West Branch Susquehanna.
Pennsylvania.
Area = 1590 sq.mi.
02050202 -- Sinnemahoning. Pennsylvania.
Area = 1020 sq.mi.
02050203 -- Middle West Branch Susquehanna.
Pennsylvania.
Area = 768 sq.mi.
02050204 -- Bald Eagle. Pennsylvania.
Area = 765 sq.mi.
02050205 -- Pine. Pennsylvania.
Area = 970 sq.mi.
02050206 -- Lower West Branch Susquehanna.
Pennsylvania.
Area = 1810 sq.mi.
Accounting Unit 020503 -- Lower Susquehanna: The Susquehanna River
Basin below the confluence with the West
Branch Susquehanna River Basin. Maryland,
Pennsylvania.
Area = 9080 sq.mi.
Cataloging Units 02050301 -- Lower Susquehanna-Penns.
Pennsylvania.
Area = 1430 sq.mi.
02050302 -- Upper Juniata. Pennsylvania.
Area = 973 sq.mi.
02050303 -- Raystown. Pennsylvania.
Area = 937 sq.mi.
02050304 -- Lower Juniata. Pennsylvania.
Area = 1450 sq.mi.
02050305 -- Lower Susquehanna-Swatara.
Pennsylvania.
Area = 1850 sq.mi.
02050306 -- Lower Susquehanna. Maryland,
Pennsylvania.
Area = 2440 sq.mi.
Subregion 0206 -- Upper Chesapeake: The Chesapeake Bay and its
tributary drainage north of the Maryland-Virginia
state line including the Pocomoke River drainage,
excluding the Susquehanna and Potomac River Basins;
and the Coastal drainage from the Delaware Bay
drainage boundary to Chincoteague Inlet on the
Delmarva Peninsula. Delaware, Maryland, Virginia,
and Pennsylvania.
Area = 8980 sq.mi.
Accounting Unit 020600 -- Upper Chesapeake. Delaware, Maryland,
Virginia, and Pennsylvania.
Area = 8980 sq.mi.
Cataloging Units 02060001 -- Upper Chesapeake Bay. Maryland.
Area = 1270 sq.mi.
02060002 -- Chester-Sassafras. Delaware,
Maryland, Pennsylvania.
Area = 1290 sq.mi.
02060003 -- Gunpowder-Patapsco. Maryland,
Pennsylvania.
Area = 1370 sq.mi.
02060004 -- Severn. Maryland.
Area = 325 sq.mi.
02060005 -- Choptank. Delaware, Maryland.
Area = 931 sq.mi.
02060006 -- Patuxent. Maryland.
Area = 922 sq.mi.
02060007 -- Blackwater-Wicomico. Delaware,
Maryland.
Area = 537 sq.mi.
02060008 -- Nanticoke. Delaware, Maryland.
Area = 821 sq.mi.
02060009 -- Pocomoke. Delaware, Maryland,
Virginia.
Area = 771 sq.mi.
02060010 -- Chincoteague. Delaware, Maryland,
Virginia.
Area = 742 sq.mi.
Subregion 0207 -- Potomac: The Potomac River Basin. District of
Columbia, Maryland, Pennsylvania, Virginia, West
Virginia.
Area = 14600 sq.mi.
Accounting Unit 020700 -- Potomac. District of Columbia, Maryland,
Pennsylvania, Virginia, West Virginia.
Area = 14600 sq.mi.
Cataloging Units 02070001 -- South Branch Potomac. West Virginia,
Virginia.
Area = 1490 sq.mi.
02070002 -- North Branch Potomac. Maryland, West
Virginia, Pennsylvania.
Area = 1360 sq.mi.
02070003 -- Cacapon-Town. Maryland,
Pennsylvania, West Virginia.
Area = 1200 sq.mi.
02070004 -- Conococheague-Opequon. Maryland,
Pennsylvania, Virginia,
West Virginia.
Area = 2250 sq.mi.
02070005 -- South Fork Shenandoah. Virginia.
Area = 1660 sq.mi.
02070006 -- North Fork Shenandoah. Virginia,
West Virginia.
Area = 1040 sq.mi.
02070007 -- Shenandoah. Virginia, West Virginia.
Area = 359 sq.mi.
02070008 -- Middle Potomac-Catoctin.
District of Columbia, Virginia,
Maryland.
Area = 1210 sq.mi.
02070009 -- Monocacy. Maryland, Pennsylvania.
Area = 962 sq.mi.
02070010 -- Middle Potomac-Anacostia-Occoquan.
District of Columbia, Maryland,
Virginia.
Area = 1280 sq.mi.
02070011 -- Lower Potomac. Maryland, Virginia.
Area = 1800 sq.mi.
Subregion 0208 -- Lower Chesapeake: The Chesapeake Bay and its
tributary drainage south of the Maryland-Virginia
state line excluding the Pocomoke River drainage;
and the Coastal drainage from Chincoteague Inlet on
the Delmarva Peninsula to the Back Bay drainage
boundary. Virginia, West Virginia.
Area = 18500 sq.mi.
Accounting Unit 020801 -- Lower Chesapeake.--The Chesapeake Bay and
its tributary drainage south of the
Maryland-Virginia state line excluding the
Pocomoke River drainage, and excluding the
James River Basin; and the Coastal drainage
from Chincoteague Inlet on the Delmarva
Peninsula to the Back Bay drainage
boundary. Virginia.
Area = 8320 sq.mi.
Cataloging Units 02080101 -- Lower Chesapeake Bay. Virginia.
Area = 1390 sq.mi.
02080102 -- Great Wicomico-Piankatank. Virginia.
Area = 605 sq.mi.
02080103 -- Rapidan-Upper Rappahannock.
Virginia.
Area = 1530 sq.mi.
02080104 -- Lower Rappahannock. Virginia.
Area = 1160 sq.mi.
02080105 -- Mattaponi. Virginia.
Area = 901 sq.mi.
02080106 -- Pamunkey. Virginia.
Area = 1450 sq.mi.
02080107 -- York. Virginia.
Area = 275 sq.mi.
02080108 -- Lynnhaven-Poquoson. Virginia.
Area = 213 sq.mi.
02080109 -- Western Lower Delmarva. Virginia.
Area = 338 sq.mi.
02080110 -- Eastern Lower Delmarva. Virginia.
Area = 457 sq.mi.
Accounting Unit 020802 -- James: The James River Basin. Virginia,
West Virginia.
Area = 10200 sq.mi.
Cataloging Units 02080201 -- Upper James. Virginia,
West Virginia.
Area = 2210 sq.mi.
02080202 -- Maury. Virginia.
Area = 818 sq.mi.
02080203 -- Middle James-Buffalo. Virginia.
Area = 1990 sq.mi.
02080204 -- Rivanna. Virginia.
Area = 758 sq.mi.
02080205 -- Middle James-Willis. Virginia.
Area = 948 sq.mi.
02080206 -- Lower James. Virginia.
Area = 1440 sq.mi.
02080207 -- Appomattox. Virginia.
Area = 1590 sq.mi.
02080208 -- Hampton Roads. Virginia.
Area = 425 sq.mi.
Region 03 South Atlantic-Gulf Region -- The drainage that ultimately
discharges into: (a) the Atlantic Ocean within and between
the states of Virginia and Florida; (b) the Gulf of Mexico
within and between the states of Florida and Louisiana; and
(c) the associated waters. Includes all of Florida and South
Carolina, and parts of Alabama, Georgia, Louisiana,
Mississippi, North Carolina, Tennessee, and Virginia.
Subregion 0301 -- Chowan-Roanoke: The coastal drainage and
associated waters from and including the Back Bay
drainage to Oregon Inlet. Virginia, North Carolina.
Area = 18300 sq.mi.
Accounting Unit 030101 -- Roanoke: The Roanoke River Basin.
North Carolina, Virginia.
Area = 9680 sq.mi.
Cataloging Units 03010101 -- Upper Roanoke. Virginia.
Area = 2180 sq.mi.
03010102 -- Middle Roanoke. North Carolina,
Virginia.
Area = 1750 sq.mi.
03010103 -- Upper Dan. North Carolina,
Virginia.
Area = 2040 sq.mi.
03010104 -- Lower Dan. North Carolina,
Virginia.
Area = 1240 sq.mi.
03010105 -- Banister. Virginia.
Area = 590 sq.mi.
03010106 -- Roanoke Rapids. North Carolina,
Virginia.
Area = 590 sq.mi.
03010107 -- Lower Roanoke. North Carolina.
Area = 1290 sq.mi.
Accounting Unit 030102 -- Albemarle-Chowan: The coastal drainage
and associated waters from and including
the Back Bay drainage to Oregon Inlet,
excluding the Roanoke River Basin.
North Carolina, Virginia.
Area = 8650 sq.mi.
Cataloging Units 03010201 -- Nottoway. North Carolina, Virginia.
Area = 1700 sq.mi.
03010202 -- Blackwater. North Carolina,
Virginia.
Area = 744 sq.mi.
03010203 -- Chowan. North Carolina, Virginia.
Area = 857 sq.mi.
03010204 -- Meherrin. North Carolina,
Virginia.
Area = 1600 sq.mi.
03010205 -- Albemarle. North Carolina,
Virginia.
Area = 3750 sq.mi.
Subregion 0302 -- Neuse-Pamlico: The coastal drainage and
associated waters from Oregon Inlet to Browns
Inlet. North Carolina.
Area = 13100 sq.mi.
Accounting Unit 030201 -- Pamlico: The coastal drainage and
associated waters from Oregon Inlet to
Browns Inlet, excluding the Neuse River
Basin. North Carolina.
Area = 7470 sq.mi.
Cataloging Units 03020101 -- Upper Tar. North Carolina.
Area = 1280 sq.mi.
03020102 -- Fishing. North Carolina
Area = 876 sq.mi.
03020103 -- Lower Tar. North Carolina.
Area = 967 sq.mi.
03020104 -- Pamlico. North Carolina
Area = 1140 sq.mi.
03020105 -- Pamlico Sound. North Carolina.
Area = 2060 sq.mi.
03020106 -- Bogue-Core Sounds. North Carolina.
Area = 1150 sq.mi.
Accounting Unit 030202 -- Neuse: The Neuse River Basin.
North Carolina.
Area = 5590 sq.mi.
Cataloging Units 03020201 -- Upper Neuse. North Carolina.
Area = 2380 sq.mi.
03020202 -- Middle Neuse. North Carolina.
Area = 1080 sq.mi.
03020203 -- Contentnea. North Carolina.
Area = 1010 sq.mi.
03020204 -- Lower Neuse. North Carolina.
Area = 1120 sq.mi.
Subregion 0303 -- Cape Fear: The coastal drainage and associated
waters from Browns Inlet to and including the Cape
Fear River Basin. North Carolina.
Area = 9700 sq.mi.
Accounting Unit 030300 -- Cape Fear. North Carolina.
Area = 9700 sq.mi.
Cataloging Units 03030001 -- New. North Carolina.
Area = 613 sq.mi.
03030002 -- Haw. North Carolina.
Area = 1690 sq.mi.
03030003 -- Deep. North Carolina.
Area = 1430 sq.mi.
03030004 -- Upper Cape Fear. North Carolina.
Area = 1630 sq.mi.
03030005 -- Lower Cape Fear. North Carolina.
Area = 1030 sq.mi.
03030006 -- Black. North Carolina.
Area = 1570 sq.mi.
03030007 -- Northeast Cape Fear. North Carolina.
Area = 1740 sq.mi.
Subregion 0304 -- Pee Dee: The coastal drainage and associated
waters from the Cape Fear River Basin boundary to
the Santee River Basin boundary.
North Carolina, South Carolina, Virginia.
Area = 18500 sq.mi.
Accounting Unit 030401 -- Upper Pee Dee: The Pee Dee River Basin
above Blewett Falls Lake Dam.
North Carolina, South Carolina, Virginia.
Area = 6800 sq.mi.
Cataloging Units 03040101 -- Upper Yadkin. North Carolina,
Virginia.
Area = 2420 sq.mi.
03040102 -- South Yadkin. North Carolina.
Area = 915 sq.mi.
03040103 -- Lower Yadkin. North Carolina.
Area = 1180 sq.mi.
03040104 -- Upper Pee Dee. North Carolina,
South Carolina.
Area = 861 sq.mi.
03040105 -- Rocky. North Carolina,
South Carolina.
Area = 1420 sq.mi.
Accounting Unit 030402 -- Lower Pee Dee: The coastal drainage and
associated waters from the Cape Fear
River Basin boundary to the Santee River
Basin boundary, excluding the Pee Dee
River Basin above Blewett Falls Dam.
North Carolina, South Carolina.
Area = 11700 sq.mi.
Cataloging Units 03040201 -- Lower Pee Dee. North Carolina,
South Carolina.
Area = 2830 sq.mi.
03040202 -- Lynches. North Carolina,
South Carolina.
Area = 1390 sq.mi.
03040203 -- Lumber. North Carolina,
South Carolina.
Area = 1750 sq.mi.
03040204 -- Little Pee Dee. North Carolina,
South Carolina.
Area = 1340 sq.mi.
03040205 -- Black. South Carolina.
Area = 2040 sq.mi.
03040206 -- Waccamaw. North Carolina,
South Carolina.
Area = 1640 sq.mi.
03040207 -- Carolina Coastal-Sampit.
North Carolina, South Carolina.
Area = 682 sq.mi.
Subregion 0305 -- Edisto-Santee: The coastal drainage and associated
waters from and including the Santee River Basin to
the Savannah River Basin boundary. Georgia,
North Carolina, South Carolina.
Area = 23600 sq.mi.
Accounting Unit 030501 -- Santee: The Santee River Basin.
North Carolina, South Carolina.
Area = 15300 sq.mi.
Cataloging Units 03050101 -- Upper Catawba. North Carolina,
South Carolina.
Area = 2350 sq.mi.
03050102 -- South Fork Catawba.
North Carolina.
Area = 657 sq.mi.
03050103 -- Lower Catawba. North Carolina,
South Carolina.
Area = 1370 sq.mi.
03050104 -- Wateree. South Carolina.
Area = 1210 sq.mi.
03050105 -- Upper Broad. North Carolina,
South Carolina.
Area = 2480 sq.mi.
03050106 -- Lower Broad. South Carolina.
Area = 1290 sq.mi.
03050107 -- Tyger. South Carolina.
Area = 809 sq.mi.
03050108 -- Enoree. South Carolina.
Area = 731 sq.mi.
03050109 -- Saluda. South Carolina.
Area = 2480 sq.mi.
03050110 -- Congaree. South Carolina.
Area = 708 sq.mi.
03050111 -- Lake Marion. South Carolina.
Area = 543 sq.mi.
03050112 -- Santee. South Carolina.
Area = 718 sq.mi.
Accounting Unit 030502 -- Edisto-South Carolina Coastal: The
Coastal drainage and associated waters
from the Santee River Basin boundary to
the Savannah River Basin boundary.
South Carolina.
Area = 8210 sq.mi.
Cataloging Units 03050201 -- Cooper. South Carolina.
Area = 837 sq.mi.
03050202 -- South Carolina Coastal.
South Carolina.
Area = 955 sq.mi.
03050203 -- North Fork Edisto. South Carolina.
Area = 750 sq.mi.
03050204 -- South Fork Edisto. South Carolina.
Area = 865 sq.mi.
03050205 -- Edisto. South Carolina.
Area = 846 sq.mi.
03050206 -- Four Hole Swamp. South Carolina.
Area = 627 sq.mi.
03050207 -- Salkehatchie. South Carolina.
Area = 1000 sq.mi.
03050208 -- Broad-St. Helena. South Carolina.
Area = 2330 sq.mi.
Subregion 0306 -- Ogeechee-Savannah: The coastal drainage and
associated waters from and including the Savannah
River Basin to the Altamaha River Basin boundary.
Georgia, North Carolina, South Carolina.
Area = 16300 sq.mi.
Accounting Unit 030601 -- Savannah: The Savannah River Basin.
Georgia, North Carolina, South Carolina.
Area = 10400 sq.mi.
Cataloging Units 03060101 -- Seneca. North Carolina,
South Carolina.
Area = 1020 sq.mi.
03060102 -- Tugaloo. Georgia, North Carolina,
South Carolina.
Area = 995 sq.mi.
03060103 -- Upper Savannah. Georgia,
South Carolina.
Area = 1830 sq.mi.
03060104 -- Broad. Georgia.
Area = 1500 sq.mi.
03060105 -- Little. Georgia.
Area = 766 sq.mi.
03060106 -- Middle Savannah. Georgia,
South Carolina.
Area = 1850 sq.mi.
03060107 -- Stevens. South Carolina.
Area = 734 sq.mi.
03060108 -- Brier. Georgia.
Area = 830 sq.mi.
03060109 -- Lower Savannah. Georgia,
South Carolina.
Area = 916 sq.mi.
Accounting Unit 030602 -- Ogeechee: The coastal drainage and
associated waters from the Savannah River
Basin boundary to the Altamaha River Basin
boundary. Georgia.
Area = 5830 sq.mi.
Cataloging Units 03060201 -- Upper Ogeechee. Georgia.
Area = 1820 sq.mi.
03060202 -- Lower Ogeechee. Georgia.
Area = 1220 sq.mi.
03060203 -- Canoochee. Georgia.
Area = 1420 sq.mi.
03060204 -- Ogeechee Coastal. Georgia.
Area = 1370 sq.mi.
Subregion 0307 -- Altamaha - St. Marys: The coastal drainage and
associated waters from and including the
Altamaha River Basin to the St. Johns River Basin
boundary. Florida, Georgia.
Area = 20500 sq.mi.
Accounting Unit 030701 -- Altamaha: The Altamaha River Basin.
Georgia.
Area = 14200 sq.mi.
Cataloging Units 03070101 -- Upper Oconee. Georgia.
Area = 2920 sq.mi.
03070102 -- Lower Oconee. Georgia.
Area = 2400 sq.mi.
03070103 -- Upper Ocmulgee. Georgia.
Area = 2980 sq.mi.
03070104 -- Lower Ocmulgee. Georgia.
Area = 2280 sq.mi.
03070105 -- Little Ocmulgee. Georgia.
Area = 818 sq.mi.
03070106 -- Altamaha. Georgia.
Area = 1510 sq.mi.
03070107 -- Ohoopee. Georgia.
Area = 1340 sq.mi.
Accounting Unit 030702 -- St. Marys - Satilla: The coastal drainage
and associated waters from the Altamaha
River Basin boundary to the St. Johns
River Basin boundary. Florida, Georgia.
Area = 6220 sq.mi.
Cataloging Units 03070201 -- Satilla. Georgia.
Area = 2630 sq.mi.
03070202 -- Little Satilla. Georgia.
Area = 773 sq.mi.
03070203 -- Cumberland-St. Simons. Georgia.
Area = 768 sq.mi.
03070204 -- St. Marys. Florida, Georgia.
Area = 1610 sq.mi.
03070205 -- Nassau. Florida.
Area = 439 sq.mi.
Subregion 0308 -- St. Johns: The coastal drainage and associated
waters from and including the St. Johns River Basin
to St. Lucie Inlet. Florida.
Area = 11600 sq.mi.
Accounting Unit 030801 -- St. Johns: The St. Johns River Basin.
Florida.
Area = 9360 sq.mi.
Cataloging Units 03080101 -- Upper St. Johns. Florida.
Area = 3700 sq.mi.
03080102 -- Oklawaha. Florida.
Area = 2860 sq.mi.
03080103 -- Lower St. Johns. Florida.
Area = 2800 sq.mi.
Accounting Unit 030802 -- East Florida Coastal: The coastal
drainage and associated waters from the
St. Johns River Basin boundary to
St. Lucie Inlet. Florida.
Area = 2190 sq.mi.
Cataloging Units 03080201 -- Daytona - St. Augustine. Florida.
Area = 760 sq.mi.
03080202 -- Cape Canaveral. Florida.
Area = 760 sq.mi.
03080203 -- Vero Beach. Florida.
Area = 670 sq.mi.
Subregion 0309 -- Southern Florida: The coastal drainage and
associated waters from St. Lucie Inlet to and
including the Caloosahatchee River Basin, and
interior drainage south of the St. Johns and Peace
River Basins. Florida.
Area = 18700 sq.mi.
Accounting Unit 030901 -- Kissimmee: The Kissimmee River Basin and
interior drainage into Lake Okeechobee
from the North. Florida.
Area = 4210 sq.mi.
Cataloging Units 03090101 -- Kissimmee. Florida.
Area = 3010 sq.mi.
03090102 -- Northern Okeechobee Inflow. Florida.
Area = 282 sq.mi.
03090103 -- Western Okeechobee Inflow. Florida.
Area = 918 sq.mi.
Accounting Unit 030902 -- Southern Florida: The coastal drainage and
associated waters from St. Lucie Inlet to
and including the Caloosahatchee River
Basin, and interior drainage south of the
St. Johns and Peace River Basins,
excluding the Kissimmee River Basin and
interior drainage into Lake Okeechobee
from the North. Florida.
Area = 14500 sq.mi.
Cataloging Units 03090201 -- Lake Okeechobee. Florida.
Area = 727 sq.mi.
03090202 -- Everglades. Florida.
Area = 8400 sq.mi.
03090203 -- Florida Bay-Florida Keys. Florida.
Area = 1230 sq.mi.
03090204 -- Big Cypress Swamp. Florida.
Area = 2710 sq.mi.
03090205 -- Caloosahatchee. Florida.
Area = 1420 sq.mi.
Subregion 0310 -- Peace-Tampa Bay: The coastal drainage and
associated waters from the Caloosahatchee River
Basin boundary to and including the withlacoochee
River Basin. Florida.
Area = 10000 sq.mi.
Accounting Unit 031001 -- Peace: The coastal drainage and associated
waters from the Caloosahatchee
River Basin boundary to Gasparilla Pass.
Florida.
Area = 3610 sq.mi.
Cataloging Units 03100101 -- Peace. Florida.
Area = 2420 sq.mi.
03100102 -- Myakka. Florida.
Area = 606 sq.mi.
03100103 -- Charlotte Harbor. Florida.
Area = 587 sq.mi.
Accounting Unit 031002 -- Tampa Bay: The coastal drainage and
associated waters from Gasparilla Pass to and
including the Withlacoochee River Basin. Florida.
Area = 6410 sq.mi.
Cataloging Units 03100201 -- Sarasota Bay. Florida.
Area = 428 sq.mi.
03100202 -- Manatee. Florida.
Area = 375 sq.mi.
03100203 -- Little Manatee. Florida.
Area = 217 sq.mi.
03100204 -- Alafia. Florida.
Area = 434 sq.mi.
03100205 -- Hillsborough. Florida.
Area = 678 sq.mi.
03100206 -- Tampa Bay. Florida.
Area = 894 sq.mi.
03100207 -- Crystal-Pithlachascotee.
Florida.
Area = 1290 sq.mi.
03100208 -- Withlacoochee. Florida.
Area = 2090 sq.mi.
Subregion 0311 -- Suwannee: The coastal drainage and associated
waters from the Withlacoochee River Basin boundary
to and including the Aucilla River Basin. Florida,
Georgia.
Area = 13800 sq.mi.
Accounting Unit 031101 -- Aucilla-Waccasassa: The coastal drainage
and associated waters from the
Withlacoochee River Basin boundary to and
including the Aucilla River Basin,
excluding the Suwannee River Basin.
Florida, Georgia.
Area = 3870 sq.mi.
Cataloging Units 03110101 -- Waccasassa. Florida.
Area = 936 sq.mi.
03110102 -- Econfina-Steinhatchee. Florida.
Area = 1930 sq.mi.
03110103 -- Aucilla. Florida, Georgia.
Area = 1000 sq.mi.
Accounting Unit 031102 -- Suwannee: The Suwannee River Basin.
Florida, Georgia.
Area = 9930 sq.mi.
Cataloging Units 03110201 -- Upper Suwannee. Florida, Georgia.
Area = 2720 sq.mi.
03110202 -- Alapaha. Florida, Georgia.
Area = 1840 sq.mi.
03110203 -- withlacoochee. Florida, Georgia.
Area = 1510 sq.mi.
03110204 -- Little. Georgia.
Area = 884 sq.mi.
03110205 -- Lower Suwannee. Florida.
Area = 1590 sq.mi.
03110206 -- Santa Fe. Florida.
Area = 1390 sq.mi.
Subregion 0312 -- Ochlockonee: The coastal drainage and associated
waters from the Aucilla River Basin boundary to and
including the Ochlockonee River Basin. Florida,
Georgia.
Area = 3650 sq.mi.
Accounting Unit 031200 -- Ochlockonee. Florida. Georgia.
Area = 3650 sq.mi.
Cataloging Units 03120001 -- Apalachee Bay-St. Marks. Florida,
Georgia.
Area = 1180 sq.mi.
03120002 -- Upper Ochlockonee. Georgia.
Area = 925 sq.mi.
03120003 -- Lower Ochlockonee. Florida,
Georgia.
Area = 1540 sq.mi.
Subregion 0313 -- Apalachicola: The coastal drainage and
associated waters from the Ochlockonee River Basin
boundary to and including the Apalachicola River
Basin and the drainage into Apalachicola Bay.
Alabama, Florida, Georgia.
Area = 20500 sq.mi.
Accounting Unit 031300 -- Apalachicola. Alabama, Florida,
Georgia.
Area = 20500 sq.mi.
Cataloging Units 03130001 -- Upper Chattahoochee. Georgia.
Area = 1560 sq.mi.
03130002 -- Middle Chattahoochee-Lake Harding.
Alabama, Georgia.
Area = 3060 sq.mi.
03130003 -- Middle Chattahoochee-Walter F.
George Reservoir. Alabama, Georgia.
Area = 2880 sq.mi.
03130004 -- Lower Chattahoochee. Alabama,
Florida, Georgia.
Area = 1300 sq.mi.
03130005 -- Upper Flint. Georgia.
Area = 2630 sq.mi.
03130006 -- Middle Flint. Georgia.
Area = 1570 sq.mi.
03130007 -- Kinchafoonee-Muckalee. Georgia.
Area = 1090 sq.mi.
03130008 -- Lower Flint. Georgia.
Area = 1290 sq.mi.
03130009 -- Ichawaynochaway. Georgia.
Area = 1110 sq.mi.
03130010 -- Spring. Georgia.
Area = 778 sq.mi.
03130011 -- Apalachicola. Florida, Georgia.
Area = 1130 sq.mi.
03130012 -- Chipola. Alabama, Florida.
Area = 1270 sq.mi.
03130013 -- New. Florida.
Area = 569 sq.mi.
03130014 -- Apalachicola Bay. Florida.
Area = 266 sq.mi.
Subregion 0314 -- Choctawhatchee - Escambia: The coastal drainage and
associated waters from the Apalachicola Bay
drainage boundary to the Mobile Bay drainage
boundary. Alabama, Florida.
Area = 15000 sq.mi.
Accounting Unit 031401 -- Florida Panhandle Coastal: The coastal
drainage and associated waters from the
Apalachicola Bay drainage boundary to the
Mobile Bay drainage boundary, excluding
the Choctawhatchee and Escambia River
Basins. Alabama, Florida, Georgia.
Area = 6060 sq.mi.
Cataloging Units 03140101 -- St. Andrew-St. Joseph Bays. Florida.
Area = 1350 sq.mi.
03140102 -- Choctawhatchee Bay. Florida.
Area = 699 sq.mi.
03140103 -- Yellow. Alabama, Florida.
Area = 1380 sq.mi.
03140104 -- Blackwater. Alabama, Florida.
Area = 860 sq.mi.
03140105 -- Pensacola Bay. Florida.
Area = 543 sq.mi.
03140106 -- Perdido. Alabama, Florida.
Area = 913 sq.mi.
03140107 -- Perdido Bay. Alabama, Florida.
Area = 313 sq.mi.
Accounting Unit 031402 -- Choctawhatchee: The Choctawhatchee River
Basin. Alabama, Florida.
Area = 4670 sq.mi.
Cataloging Units 03140201 -- Upper Choctawhatchee. Alabama.
Area = 1560 sq.mi.
03140202 -- Pea. Alabama, Florida.
Area = 1550 sq.mi.
03140203 -- Lower Choctawhatchee. Alabama,
Florida.
Area = 1560 sq.mi.
Accounting Unit 031403 -- Escambia: The Escambia River Basin.
Alabama, Florida.
Area = 4290 sq.mi.
Cataloging Units 03140301 -- Upper Conecuh. Alabama.
Area = 853 sq.mi.
03140302 -- Patsaliga. Alabama.
Area = 593 sq.mi.
03140303 -- Sepulga. Alabama.
Area = 1050 sq.mi.
03140304 -- Lower Conecuh. Alabama, Florida.
Area = 1010 sq.mi.
03140305 -- Escambia. Alabama, Florida.
Area = 780 sq.mi.
Subregion 0315 -- Alabama: The Alabama River Basin. Alabama, Georgia,
Tennessee.
Area = 22700 sq.mi.
Accounting Unit 031501 -- Coosa-Tallapoosa: The Alabama River Basin
above the confluence of and including the
Coosa and Tallapoosa River Basins.
Alabama, Georgia, Tennessee.
Area = 14800 sq.mi.
Cataloging Units 03150101 -- Conasauga. Georgia, Tennessee.
Area = 723 sq.mi.
03150102 -- Coosawattee. Georgia.
Area = 848 sq.mi.
03150103 -- Oostanaula. Georgia.
Area = 557 sq.mi.
03150104 -- Etowah. Georgia.
Area = 1850 sq.mi.
03150105 -- Upper Coosa. Alabama, Georgia.
Area = 1610 sq.mi.
03150106 -- Middle Coosa. Alabama.
Area = 2580 sq.mi.
03150107 -- Lower Coosa. Alabama.
Area = 1910 sq.mi.
03150108 -- Upper Tallapoosa. Alabama,
Georgia.
Area = 1400 sq.mi.
03150109 -- Middle Tallapoosa. Alabama.
Area = 1590 sq.mi.
03150110 -- Lower Tallapoosa. Alabama.
Area = 1700 sq.mi.
Accounting Unit 031502 -- Alabama: The Alabama River Basin below the
confluence of the Coosa and Tallapoosa
River Basins. Alabama.
Area = 7950 sq.mi.
Cataloging Units 03150201 -- Upper Alabama. Alabama.
Area = 2430 sq.mi.
03150202 -- Cahaba. Alabama.
Area = 1850 sq.mi.
03150203 -- Middle Alabama. Alabama.
Area = 2250 sq.mi.
03150204 -- Lower Alabama. Alabama.
Area = 1420 sq.mi.
Subregion 0316 -- Mobile - Tombigbee: The drainage into Mobile Bay
excluding the Alabama River Basin. Alabama,
Mississippi.
Area = 21900 sq.mi.
Accounting Unit 031601 -- Black Warrior - Tombigbee: the
Tombigbee River Basin above the confluence
with and including the Black Warrior River
Basin. Alabama, Mississippi.
Area = 15400 sq.mi.
Cataloging Units 03160101 -- Upper Tombigbee. Alabama,
Mississippi.
Area = 1790 sq.mi.
03160102 -- Town. Mississippi.
Area = 689 sq.mi.
03160103 -- Buttahatchee. Alabama,
Mississippi.
Area = 863 sq.mi.
03160104 -- Tibbee. Mississippi.
Area = 1100 sq.mi.
03160105 -- Luxapallila. Alabama,
Mississippi.
Area = 798 sq.mi.
03160106 -- Middle Tombigbee-Lubbub. Alabama,
Mississippi.
Area = 1650 sq.mi.
03160107 -- Sipsey. Alabama.
Area = 788 sq.mi.
03160108 -- Noxubee. Alabama, Mississippi.
Area = 1400 sq.mi.
03160109 -- Mulberry. Alabama.
Area = 1380 sq.mi.
03160110 -- Sipsey Fork. Alabama.
Area = 1010 sq.mi.
03160111 -- Locust. Alabama.
Area = 1210 sq.mi.
03160112 -- Upper Black Warrior. Alabama.
Area = 1250 sq.mi.
03160113 -- Lower Black Warrior. Alabama.
Area = 1450 sq.mi.
Accounting Unit 031602 -- Mobile Bay- Tombigbee: The drainage into
Mobile Bay excluding the Alabama River
Basin, the Tombigbee River Basin above
the confluence with the Black Warrior
River, and the Black Warrior River Basin.
Alabama, Mississippi.
Area = 6500 sq.mi.
Cataloging Units 03160201 -- Middle Tombigbee-Chickasaw.
Alabama, Mississippi.
Area = 2090 sq.mi.
03160202 -- Sucarnoochee. Alabama, Mississippi.
Area = 956 sq.mi.
03160203 -- Lower Tombigbee. Alabama.
Area = 1600 sq.mi.
03160204 -- Mobile - Tensaw. Alabama.
Area = 972 sq.mi.
03160205 -- Mobile Bay. Alabama.
Area = 883 sq.mi.
Subregion 0317 -- Pascagoula: The coastal drainage and associated
waters in Alabama and Mississippi north and east
of the Louisiana-Mississippi state line from the
Mobile Bay drainage boundary to the Pearl River
Basin boundary. Alabama, Mississippi.
Area = 12100 sq.mi.
Accounting Unit 031700 -- Pascagoula. Alabama. Mississippi.
Area = 12100 sq.mi.
Cataloging Units 03170001 -- Chunky-Okatibbee. Mississippi.
Area = 907 sq.mi.
03170002 -- Upper Chickasawhay. Alabama,
Mississippi.
Area = 1480 sq.mi.
03170003 -- Lower Chickasawhay. Alabama,
Mississippi.
Area = 671 sq.mi.
03170004 -- Upper Leaf. Mississippi.
Area = 1760 sq.mi.
03170005 -- Lower Leaf. Mississippi.
Area = 1820 sq.mi.
03170006 -- Pascagoula. Mississippi.
Area = 620 sq.mi.
03170007 -- Black. Mississippi.
Area = 1290 sq.mi.
03170008 -- Escatawpa. Alabama, Mississippi.
Area = 1080 sq.mi.
03170009 -- Mississippi Coastal. Alabama,
Mississippi.
Area = 2480 sq.mi.
Subregion 0318 -- Pearl: The Pearl River Basin. Louisiana,
Mississippi.
Area = 8730 sq.mi.
Accounting Unit 031800 -- Pearl. Louisiana, Mississippi.
Area = 8730 sq.mi.
Cataloging Units 03180001 -- Upper Pearl. Mississippi.
Area = 2490 sq.mi.
03180002 -- Middle Pearl-Strong. Mississippi.
Area = 1990 sq.mi.
03180003 -- Middle Pearl-Silver. Mississippi.
Area = 1220 sq.mi.
03180004 -- Lower Pearl. Louisiana. Mississippi.
Area = 1810 sq.mi.
03180005 -- Bogue Chitto. Louisiana,
Mississippi.
Area = 1220 sq.mi.
Region 04 Great Lakes Region -- The drainage within the United States
that ultimately discharges into: (a) the Great Lakes
system, including the lake surfaces, bays, and islands; and
(b) the St. Lawrence River to the Riviere Richelieu drainage
boundary. Includes parts of Illinois, Indiana,
Michigan, Minnesota, New York, Ohio, Pennsylvania, and
Wisconsin.
Subregion 0401 -- Western Lake Superior: The drainage into Lake
Superior within the United States from the Ontario-
Minnesota international boundary to and including
the Montreal River Basin. Michigan, Minnesota,
Wisconsin.
Area = 9240 sq.mi.
Accounting Unit 040101 -- Northwestern Lake Superior: The drainage
into Lake Superior within the United
States from the Ontario-Minnesota
international boundary to the St. Louis
River Basin boundary. Minnesota.
Area = 2260 sq.mi.
Cataloging Units 04010101 -- Baptism-Brule. Minnesota.
Area = 1620 sq.mi.
04010102 -- Beaver-Lester. Minnesota.
Area = 635 sq.mi.
Accounting Unit 040102 -- St. Louis: The St. Louis River Basin.
Minnesota, Wisconsin.
Area = 3810 sq.mi.
Cataloging Units 04010201 -- St. Louis. Minnesota, Wisconsin.
Area = 3010 sq.mi.
04010202 -- Cloquet. Minnesota.
Area = 796 sq.mi.
Accounting Unit 040103 -- Southwestern Lake Superior: The drainage
into Lake Superior from the St. Louis
River Basin boundary to and including
the Montreal River Basin. Michigan,
Minnesota, Wisconsin.
Area = 3180 sq.mi.
Cataloging Units 04010301 -- Beartrap-Nemadji. Minnesota,
Wisconsin.
Area = 1850 sq.mi.
04010302 -- Bad-Montreal. Michigan, Wisconsin.
Area = 1330 sq.mi.
Subregion 0402 -- Southern Lake Superior-Lake Superior: The drainage
into Lake Superior within the United States from
the Montreal River Basin boundary to the Soo Locks
at Sault Sainte Marie, and Lake Superior within the
United States, including its bays and islands.
Michigan, Minnesota, Wisconsin.
Area = 28600 sq.mi.
Accounting Unit 040201 -- Southcentral Lake Superior: The drainage
into Lake Superior from the Montreal River
Basin boundary to and including the Carp
River Basin. Michigan, Wisconsin.
Area = 5210 sq.mi.
Cataloging Units 04020101 -- Black-Presque Isle. Michigan,
Wisconsin.
Area = 1030 sq.mi.
04020102 -- Ontonagon. Michigan, Wisconsin.
Area = 1390 sq.mi.
04020103 -- Keweenaw Peninsula. Michigan.
Area = 1130 sq.mi.
04020104 -- Sturgeon. Michigan.
Area = 710 sq.mi.
04020105 -- Dead-Kelsey. Michigan.
Area = 946 sq.mi.
Accounting Unit 040202 -- Southeastern Lake Superior: The drainage
into Lake Superior within the United
States from the Carp River Basin boundary
to the Soo Locks at Sault Sainte Marie.
Michigan.
Area = 2340 sq.mi.
Cataloging Units 04020201 -- Betsy-Chocolay. Michigan.
Area = 1180 sq.mi.
04020202 -- Tahquamenon. Michigan.
Area = 832 sq.mi.
04020203 -- Waiska. Michigan.
Area = 324 sq.mi.
Accounting Unit 040203 -- Lake Superior: Lake Superior within the
United States, including its bays and
islands. Michigan, Minnesota, Wisconsin.
Area = 21100 sq.mi.
Cataloging Unit 04020300 -- Lake Superior. Michigan. Minnesota,
Wisconsin.
Area = 21100 sq.mi.
Subregion 0403 -- Northwestern Lake Michigan: The drainage into
Lake Michigan from the Milwaukee River Basin
boundary to the Manistique River Basin boundary.
Michigan, Wisconsin.
Area = 18700 sq.mi.
Accounting Unit 040301 -- Northwestern Lake Michigan: The drainage
into Lake Michigan from the Milwaukee
River Basin boundary to the Manistique
River Basin boundary, excluding the Fox
River Basin. Michigan, Wisconsin.
Area = 12400 sq.mi.
Cataloging Units 04030101 -- Manitowoc-Sheboygan. Wisconsin.
Area = 1650 sq.mi.
04030102 -- Door-Kewaunee. Wisconsin.
Area = 776 sq.mi.
04030103 -- Duck-Pensaukee. Wisconsin.
Area = 483 sq.mi.
04030104 -- Oconto. Wisconsin.
Area = 1040 sq.mi.
04030105 -- Peshtigo. Wisconsin.
Area = 1170 sq.mi.
04030106 -- Brule. Michigan, Wisconsin.
Area = 1060 sq.mi.
04030107 -- Michigamme. Michigan.
Area = 734 sq.mi.
04030108 -- Menominee. Michigan, Wisconsin.
Area = 2310 sq.mi.
04030109 -- Cedar-Ford. Michigan.
Area = 1010 sq.mi.
04030110 -- Escanaba. Michigan.
Area = 935 sq.mi.
04030111 -- Tacoosh-Whitefish. Michigan.
Area = 656 sq.mi.
04030112 -- Fishdam-Sturgeon. Michigan.
Area = 556 sq.mi.
Accounting Unit 040302 -- Fox: The Fox River Basin. Wisconsin.
Area = 6340 sq.mi.
Cataloging Units 04030201 -- Upper Fox. Wisconsin.
Area = 1610 sq.mi.
04030202 -- Wolf. Wisconsin.
Area = 3720 sq.mi.
04030203 -- Lake Winnebago. Wisconsin.
Area = 570 sq.mi.
04030204 -- Lower Fox. Wisconsin.
Area = 438 sq.mi.
Subregion 0404 -- Southwestern Lake Michigan. The drainage into Lake
Michigan from the St. Joseph River Basin boundary
to and including the Milwaukee River Basin.
Illinois, Indiana, Michigan, Wisconsin.
Area = 1970 sq.mi.
Accounting Unit 040400 -- Southwestern Lake Michigan. Illinois,
Indiana, Michigan, Wisconsin.
Area = 1970 sq.mi.
Cataloging Units 04040001 -- Little Calumet-Galien. Illinois,
Indiana, Michigan.
Area = 705 sq.mi.
04040002 -- Pike-Root. Illinois, Wisconsin.
Area = 399 sq.mi.
04040003 -- Milwaukee. Wisconsin.
Area = 861 sq.mi.
Subregion 0405 -- Southeastern Lake Michigan: The drainage into Lake
Michigan from and including the St. Joseph River
Basin to and including the Grand River Basin.
Indiana, Michigan.
Area = 12800 sq.mi.
Accounting Unit 040500 -- Southeastern Lake Michigan. Indiana,
Michigan.
Area = 12800 sq.mi.
Cataloging Units 04050001 -- St. Joseph. Indiana, Michigan
Area = 4670 sq.mi.
04050002 -- Black-Macatawa. Michigan.
Area = 600 sq.mi.
04050003 -- Kalamazoo. Michigan.
Area = 2030 sq.mi.
04050004 -- Upper Grand. Michigan.
Area = 1730 sq.mi.
04050005 -- Maple. Michigan.
Area = 924 sq.mi.
04050006 -- Lower Grand. Michigan.
Area = 1990 sq.mi.
04050007 -- Thornapple. Michigan.
Area = 874 sq.mi.
Subregion 0406 -- Northeastern Lake Michigan-Lake Michigan: the
drainage into Lake Michigan from the Grand River
Basin boundary to and including the Manistique
River Basin, and Lake Michigan, including its Bays
and Islands. Illinois, Indiana, Michigan,
Wisconsin.
Area = 33600 sq.mi.
Accounting Unit 040601 -- Northeastern Lake Michigan: The drainage
into Lake Michigan from the Grand River
Basin boundary to and including the
Manistique River Basin. Michigan.
Area = 11300 sq.mi.
Cataloging Units 04060101 -- Pere Marquette-White. Michigan.
Area = 2100 sq.mi.
04060102 -- Muskegon. Michigan.
Area = 2680 sq.mi.
04060103 -- Manistee. Michigan.
Area = 1970 sq.mi.
04060104 -- Betsie-Platte. Michigan.
Area = 819 sq.mi.
04060105 -- Boardman-Charlevoix. Michigan.
Area = 1650 sq.mi.
04060106 -- Manistique. Michigan.
Area = 1480 sq.mi.
04060107 -- Brevoort-Millecoquins. Michigan.
Area = 578 sq.mi.
Accounting Unit 040602 -- Lake Michigan: Lake Michigan, including
its bays and islands. Illinois, Indiana,
Michigan, Wisconsin.
Area = 22300 sq.mi.
Cataloging Units 04060200 -- Lake Michigan. Illinois, Indiana,
Michigan, Wisconsin.
Area = 22300 sq.mi.
Subregion 0407 -- Northwestern Lake Huron: The drainage into Lake
Huron within the United States from the Soo Locks
at Sault Sainte Marie to and including the Au Sable
River Basin. Michigan.
Area = 7110 sq.mi.
Accounting Unit 040700 -- Northwestern Lake Huron. Michigan.
Area = 7110 sq.mi.
Cataloging Units 04070001 -- St. Marys. Michigan.
Area = 853 sq.mi.
04070002 -- Carp-Pine. Michigan.
Area = 641 sq.mi.
04070003 -- Lone Lake-Ocqueoc. Michigan.
Area = 810 sq.mi.
04070004 -- Cheboygan. Michigan.
Area = 918 sq.mi.
04070005 -- Black. Michigan.
Area = 618 sq.mi.
04070006 -- Thunder Bay. Michigan.
Area = 1270 sq.mi.
04070007 -- Au Sable. Michigan.
Area = 2000 sq.mi.
Subregion 0408 -- Southwestern Lake Huron-Lake Huron: The drainage
into Lake Huron within the United States, from the
Au Sable River Basin boundary to the St. Clair
River Basin boundary at the mouth of Lake Huron,
and Lake Huron within the United States, including
its bays and islands. Michigan.
Area = 18000 sq.mi.
Accounting Unit 040801 -- Southwestern Lake Huron: The drainage into
Lake Huron within the United States from
the Au Sable River Basin boundary to the
St. Clair River Basin boundary at the
mouth of Lake Huron, excluding the
Saginaw River Basin. Michigan.
Area = 2960 sq.mi.
Cataloging Units 04080101 -- Au Gres-Rifle. Michigan.
Area = 1030 sq.mi.
04080102 -- Kawkawlin-Pine. Michigan.
Area = 503 sq.mi.
04080103 -- Pigeon-Wiscoggin. Michigan.
Area = 853 sq.mi.
04080104 -- Birch-Willow. Michigan.
Area = 572 sq.mi.
Accounting Unit 040802 -- Saginaw: The Saginaw River Basin.
Michigan.
Area = 6160 sq.mi.
Cataloging Units 04080201 -- Tittabawassee. Michigan.
Area = 1430 sq.mi.
04080202 -- Pine. Michigan.
Area = 1040 sq.mi.
04080203 -- Shiawassee. Michigan.
Area = 1220 sq.mi.
04080204 -- Flint. Michigan.
Area = 1340 sq.mi.
04080205 -- Cass. Michigan.
Area = 881 sq.mi.
04080206 -- Saginaw. Michigan.
Area = 250 sq.mi.
Accounting Unit 040803 -- Lake Huron: Lake Huron within the
United States, including its Bays and
Islands. Michigan.
Area = 8920 sq.mi.
Cataloging Unit 04080300 -- Lake Huron. Michigan.
Area = 8920 sq.mi.
Subregion 0409 -- St. Clair-Detroit: The St. Clair and Detroit River
Basins within the United States from the mouth of
Lake Huron to and including the Huron River Basin,
and Lake St. Clair within the United States.
Michigan.
Area = 3960 sq.mi.
Accounting Unit 040900 -- St. Clair-Detroit. Michigan.
Area = 3960 sq.mi.
Cataloging Units 04090001 -- St. Clair. Michigan.
Area = 1210 sq.mi.
04090002 -- Lake St. Clair. Michigan.
Area = 413 sq.mi.
04090003 -- Clinton. Michigan.
Area = 742 sq.mi.
04090004 -- Detroit. Michigan.
Area = 685 sq.mi.
04090005 -- Huron. Michigan.
Area = 909 sq.mi.
Subregion 0410 -- Western Lake Erie: The drainage into Lake Erie from
the Huron River Basin boundary to and including the
Vermilion River Basin. Indiana, Michigan, Ohio.
Area = 11900 sq.mi.
Accounting Unit 041000 -- Western Lake Erie. Indiana, Michigan,
Ohio.
Area = 11900 sq.mi.
Cataloging Units 04100001 -- Ottawa-Stony. Michigan, Ohio.
Area = 689 sq.mi.
04100002 -- Raisin. Michigan, Ohio.
Area = 1070 sq.mi.
04100003 -- St. Joseph. Indiana, Michigan, Ohio.
Area = 1060 sq.mi.
04100004 -- St. Marys. Indiana, Ohio.
Area = 820 sq.mi.
04100005 -- Upper Maumee. Indiana, Ohio.
Area = 385 sq.mi.
04100006 -- Tiffin. Michigan, Ohio.
Area = 781 sq.mi.
04100007 -- Auglaize. Indiana, Ohio.
Area = 1660 sq.mi.
04100008 -- Blanchard. Ohio.
Area = 757 sq.mi.
04100009 -- Lower Maumee. Ohio.
Area = 1080 sq.mi.
04100010 -- Cedar-Portage. Ohio.
Area = 958 sq.mi.
04100011 -- Sandusky. Ohio.
Area = 1850 sq.mi.
04100012 -- Huron-Vermilion. Ohio.
Area = 754 sq.mi.
Subregion 0411 -- Southern Lake Erie: The drainage into Lake Erie
from the Vermilion River Basin boundary to and
including the Ashtabula River Basin. Ohio,
Pennsylvania.
Area = 3030 sq.mi.
Accounting Unit 041100 -- Southern Lake Erie. Ohio, Pennsylvania.
Area = 3030 sq.mi.
Cataloging Units 04110001 -- Black-Rocky. Ohio.
Area = 888 sq.mi.
04110002 -- Cuyahoga. Ohio.
Area = 804 sq.mi.
04110003 -- Ashtabula-Chagrin. Ohio,
Pennsylvania.
Area = 630 sq.mi.
04110004 -- Grand. Ohio.
Area = 710 sq.mi.
Subregion 0412 -- Eastern Lake Erie-Lake Erie: The drainage into Lake
Erie within the United States from the Ashtabula
River Basin boundary to and including the
Niagara River Basin, and Lake Erie within the
United States, including its bays and islands.
Michigan, New York, Ohio, Pennsylvania.
Area = 7740 sq.mi.
Accounting Unit 041201 -- Eastern Lake Erie: The drainage into Lake
Erie within the United States from the
Ashtabula River Basin boundary to and
including the Niagara River Basin.
New York, Ohio, Pennsylvania.
Area = 2930 sq.mi.
Cataloging Units 04120101 -- Chautauqua-Conneaut. New York, Ohio,
Pennsylvania.
Area = 874 sq.mi.
04120102 -- Cattaraugus. New York.
Area = 548 sq.mi.
04120103 -- Buffalo-Eighteenmile. New York.
Area = 732 sq.mi.
04120104 -- Niagara. New York.
Area = 774 sq.mi.
Accounting Unit 041202 -- Lake Erie: Lake Erie within the
United States, including its bays and
islands. Michigan, New York, Ohio,
Pennsylvania.
Area = 4810 sq.mi.
Cataloging Unit 04120200 -- Lake Erie. Michigan, New York, Ohio,
Pennsylvania.
Area = 4810 sq.mi.
Subregion 0413 -- Southwestern Lake Ontario: The drainage into
Lake Ontario from the Niagara River Basin
boundary to and including the Genesee River Basin.
New York, Pennsylvania.
Area = 3540 sq.mi.
Accounting Unit 041300 -- Southwestern Lake Ontario. New York,
Pennsylvania.
Area = 3540 sq.mi.
Cataloging Units 04130001 -- Oak Orchard-Twelvemile. New York.
Area = 1040 sq.mi.
04130002 -- Upper Genesee. New York,
Pennsylvania.
Area = 1430 sq.mi.
04130003 -- Lower Genesee. New York.
Area = 1070 sq.mi.
Subregion 0414 -- Southeastern Lake Ontario: The drainage into
Lake Ontario from the Genesee River Basin boundary
to and including the Stony Creek Basin. New York.
Area = 6710 sq.mi.
Accounting Unit 041401 -- Southeastern Lake Ontario: The drainage
into Lake Ontario from the Genesee River
Basin boundary to and including the
Stony Creek Basin, excluding the Oswego
River Basin. New York.
Area = 1680 sq.mi.
Cataloging Units 04140101 -- Irondequoit-Ninemile. New York.
Area = 708 sq.mi.
04140102 -- Salmon-Sandy. New York.
Area = 969 sq.mi.
Accounting Unit 041402 -- Oswego: The Oswego River Basin. New York.
Area = 5030 sq.mi.
Cataloging Units 04140201 -- Seneca. New York.
Area = 3430 sq.mi.
04140202 -- Oneida. New York.
Area = 1470 sq.mi.
04140203 -- Oswego. New York.
Area = 131 sq.mi.
Subregion 0415 -- Northeastern Lake Ontario-Lake
Ontario-St. Lawrence: The drainage into
Lake Ontario and the St. Lawrence River Basin
within the United States from the Stony Creek
Basin boundary to and including the English River
Basin, and Lake Ontario within the United States,
including its bays and islands. New York.
Area = 11400 sq.mi.
Accounting Unit 041501 -- Northeastern Lake Ontario: The drainage
into Lake Ontario from the Stony Creek
Basin boundary to the drainage boundary of
the St. Lawrence River at the mouth of
Lake Ontario. New York.
Area = 2300 sq.mi.
Cataloging Units 04150101 -- Black. New York.
Area = 1920 sq.mi.
04150102 -- Chaumont-Perch. New York.
Area = 380 sq.mi.
Accounting Unit 041502 -- Lake Ontario: Lake Ontario within the
United States, including its Bays and
Islands. New York.
Area = 3430 sq.mi.
Cataloging Unit 04150200 -- Lake Ontario. New York.
Area = 3430 sq.mi.
Accounting Unit 041503 -- St. Lawrence: The drainage into the
St. Lawrence River Basin within the
United States from the mouth of
Lake Ontario to and including the English
River Basin. New York.
Area = 5650 sq.mi.
Cataloging Units 04150301 -- Upper St. Lawrence. New York.
Area = 506 sq.mi.
04150302 -- Oswegatchie. New York.
Area = 1040 sq.mi.
04150303 -- Indian. New York.
Area = 558 sq.mi.
04150304 -- Grass. New York.
Area = 630 sq.mi.
04150305 -- Raquette. New York.
Area = 1250 sq.mi.
04150306 -- St. Regis. New York.
Area = 853 sq.mi.
04150307 -- English-Salmon. New York.
Area = 811 sq.mi.
Region 05 Ohio Region -- The drainage of the Ohio River Basin,
excluding the Tennessee River Basin. Includes parts of
Illinois, Indiana, Kentucky, Maryland, New York,
North Carolina, Ohio, Pennsylvania, Tennessee, Virginia and
West Virginia.
Subregion 0501 -- Allegheny: The Allegheny River Basin. Pennsylvania,
New York.
Area = 11600 sq.mi.
Accounting Unit 050100 -- Allegheny. Pennsylvania, New York.
Area = 11600 sq.mi.
Cataloging Units 05010001 -- Upper Allegheny. Pennsylvania,
New York.
Area = 2560 sq.mi.
05010002 -- Conewango. Pennsylvania, New York.
Area = 888 sq.mi.
05010003 -- Middle Allegheny-Tionesta.
Pennsylvania.
Area = 1670 sq.mi.
05010004 -- French. Pennsylvania, New York.
Area = 1210 sq.mi.
05010005 -- Clarion. Pennsylvania.
Area = 1230 sq.mi.
05010006 -- Middle Allegheny-Redbank.
Pennsylvania.
Area = 1680 sq.mi.
05010007 -- Conemaugh. Pennsylvania.
Area = 1350 sq.mi.
05010008 -- Kiskiminetas. Pennsylvania.
Area = 500 sq.mi.
05010009 -- Lower Allegheny. Pennsylvania.
Area = 479 sq.mi.
Subregion 0502 -- Monongahela: The Monongahela River Basin. Maryland,
Pennsylvania, West Virginia.
Area = 7310 sq.mi.
Accounting Unit 050200 -- Monongahela. Maryland, Pennsylvania,
West Virginia.
Area = 7310 sq.mi.
Cataloging Units 05020001 -- Tygart Valley. West Virginia.
Area = 1380 sq.mi.
05020002 -- West Fork. West Virginia.
Area = 877 sq.mi.
05020003 -- Upper Monongahela. Pennsylvania,
West Virginia.
Area = 463 sq.mi.
05020004 -- Cheat. Pennsylvania, West Virginia.
Area = 1410 sq.mi.
05020005 -- Lower Monongahela. Pennsylvania,
West Virginia.
Area = 1450 sq.mi.
05020006 -- Youghiogheny. Maryland,
Pennsylvania, West Virginia.
Area = 1730 sq.mi.
Subregion 0503 -- Upper Ohio: The Ohio River Basin below the
confluence of the Allegheny and Monongahela River
Basins to the confluence with the Kanawha River
Basin, excluding the Muskingum River Basin. Ohio,
Pennsylvania, West Virginia.
Area = 13200 sq.mi.
Accounting Unit 050301 -- Upper Ohio-Beaver. The Ohio River Basin
below the confluence of the Allegheny and
Monongahela River Basins to Lock and
Dam 14. Ohio, Pennsylvania, West Virginia.
Area = 6570 sq.mi.
Cataloging Units 05030101 -- Upper Ohio. Ohio, Pennsylvania,
West Virginia.
Area = 1950 sq.mi.
05030102 -- Shenango. Ohio, Pennsylvania.
Area = 1050 sq.mi.
05030103 -- Mahoning. Ohio, Pennsylvania.
Area = 1130 sq.mi.
05030104 -- Beaver. Pennsylvania.
Area = 108 sq.mi.
05030105 -- Connoquenessing. Pennsylvania.
Area = 837 sq.mi.
05030106 -- Upper Ohio-Wheeling. Ohio,
Pennsylvania, West Virginia.
Area = 1490 sq.mi.
Accounting Unit 050302 -- Upper Ohio-Little Kanawha: The Ohio River
Basin from Lock and Dam 14 to the
confluence with the Kanawha River Basin,
excluding the Muskingum River Basin. Ohio,
West Virginia.
Area = 6660 sq.mi.
Cataloging Units 05030201 -- Little Muskingum-Middle Island.
Ohio, West Virginia.
Area = 1800 sq.mi.
05030202 -- Upper Ohio-Shade. Ohio,
West Virginia.
Area = 1390 sq.mi.
05030203 -- Little Kanawha. West Virginia.
Area = 2300 sq.mi.
05030204 -- Hocking. Ohio.
Area = 1170 sq.mi.
Subregion 0504 -- Muskingum: The Muskingum River Basin. Ohio.
Area = 7980 sq.mi.
Accounting Unit 050400 -- Muskingum. Ohio.
Area = 7980 sq.mi.
Cataloging Units 05040001 -- Tuscarawas. Ohio.
Area = 2580 sq.mi.
05040002 -- Mohican. Ohio.
Area = 981 sq.mi.
05040003 -- Walhonding. Ohio.
Area = 1250 sq.mi.
05040004 -- Muskingum. Ohio.
Area = 1540 sq.mi.
05040005 -- Wills. Ohio.
Area = 843 sq.mi.
05040006 -- Licking. Ohio.
Area = 786 sq.mi.
Subregion 0505 -- Kanawha: The Kanawha River Basin. North Carolina,
Virginia, West Virginia.
Area = 12200 sq.mi.
Accounting Unit 050500 -- Kanawha. North Carolina, Virginia,
West Virginia.
Area = 12200 sq.mi.
Cataloging Units 05050001 -- Upper New. North Carolina, Virginia.
Area = 2900 sq.mi.
05050002 -- Middle New. Virginia, West Virginia.
Area = 1650 sq.mi.
05050003 -- Greenbrier. West Virginia.
Area = 1650 sq.mi.
05050004 -- Lower New. West Virginia.
Area = 692 sq.mi.
05050005 -- Gauley. West Virginia.
Area = 1420 sq.mi.
05050006 -- Upper Kanawha. West Virginia.
Area = 522 sq.mi.
05050007 -- Elk. West Virginia.
Area = 1530 sq.mi.
05050008 -- Lower Kanawha. West Virginia.
Area = 940 sq.mi.
05050009 -- Coal. West Virginia.
Area = 893 sq.mi.
Subregion 0506 -- Scioto: The Scioto River Basin. Ohio.
Area = 6440 sq.mi.
Accounting Unit 050600 -- Scioto. Ohio.
Area = 6440 sq.mi.
Cataloging Units 05060001 -- Upper Scioto. Ohio.
Area = 3160 sq.mi.
05060002 -- Lower Scioto. Ohio.
Area = 2150 sq.mi.
05060003 -- Paint. Ohio.
Area = 1130 sq.mi.
Subregion 0507 -- Big Sandy-Guyandotte: The Big Sandy and Guyandotte
River Basins. Kentucky, Virginia, West Virginia.
Area = 5900 sq.mi.
Accounting Unit 050701 -- Guyandotte: The Guyandotte River Basin.
West Virginia.
Area = 1680 sq.mi.
Cataloging Units 05070101 -- Upper Guyandotte. West Virginia.
Area = 945 sq.mi.
05070102 -- Lower Guyandotte. West Virginia.
Area = 738 sq.mi.
Accounting Unit 050702 -- Big Sandy: The Big Sandy River Basin.
Kentucky, Virginia, West Virginia.
Area = 4210 sq.mi.
Cataloging Units 05070201 -- Tug. Kentucky, Virginia,
West Virginia.
Area = 1520 sq.mi.
05070202 -- Upper Levisa. Kentucky, Virginia.
Area = 1200 sq.mi.
05070203 -- Lower Levisa. Kentucky.
Area = 1090 sq.mi.
05070204 -- Big Sandy. Kentucky, West Virginia.
Area = 402 sq.mi.
Subregion 0508 -- Great Miami: The Great Miami River Basin. Indiana,
Ohio.
Area = 5330 sq.mi.
Accounting Unit 050800 -- Great Miami. Indiana, Ohio.
Area = 5330 sq.mi.
Cataloging Units 05080001 -- Upper Great Miami. Indiana, Ohio.
Area = 2480 sq.mi.
05080002 -- Lower Great Miami. Indiana, Ohio.
Area = 1390 sq.mi.
05080003 -- Whitewater. Indiana, Ohio.
Area = 1460 sq.mi.
Subregion 0509 -- Middle Ohio: The Ohio River Basin below the
confluence with the Kanawha River Basin to the
confluence with the Kentucky River Basin, excluding
the Big Sandy, Great Miami, Guyandotte, Kentucky,
Licking and Scioto River Basins. Indiana, Kentucky,
Ohio, West Virginia.
Area = 8850 sq.mi.
Accounting Unit 050901 -- Middle Ohio-Raccoon: The Ohio River Basin
below the confluence with the
Kanawha River Basin to river mile 359.3
(formerly Lock and Dam 31) on the Ohio
River, excluding the Big Sandy,
Guyandotte, and Scioto River Basins.
Kentucky, Ohio, West Virginia.
Area = 3630 sq.mi.
Cataloging Units 05090101 -- Raccoon-Symmes. Ohio, West Virginia.
Area = 1450 sq.mi.
05090102 -- Twelvepole. West Virginia.
Area = 444 sq.mi.
05090103 -- Little Scioto-Tygarts. Kentucky,
Ohio.
Area = 1020 sq.mi.
05090104 -- Little Sandy. Kentucky.
Area = 713 sq.mi.
Accounting Unit 050902 -- Middle Ohio-Little Miami: The Ohio River
Basin from river mile 359.3 (formerly Lock
and Dam 31) on the Ohio River to the
confluence with the Kentucky River Basin,
excluding the Great Miami, Kentucky and
Licking River Basins. Indiana, Kentucky,
Ohio.
Area = 5220 sq.mi.
Cataloging Units 05090201 -- Ohio Brush-Whiteoak. Kentucky, Ohio.
Area = 2110 sq.mi.
05090202 -- Little Miami. Ohio.
Area = 1710 sq.mi.
05090203 -- Middle Ohio-Laughery. Indiana,
Kentucky, Ohio.
Area = 1400 sq.mi.
Subregion 0510 -- Kentucky-Licking: The Licking and Kentucky River
Basins. Kentucky.
Area = 10500 sq.mi.
Accounting Unit 051001 -- Licking: The Licking River Basin.
Kentucky.
Area = 3660 sq.mi.
Cataloging Units 05100101 -- Licking. Kentucky.
Area = 2740 sq.mi.
05100102 -- South Fork Licking. Kentucky.
Area = 915 sq.mi.
Accounting Unit 051002 -- Kentucky: The Kentucky River Basin.
Kentucky.
Area = 6870 sq.mi.
Cataloging Units 05100201 -- North Fork Kentucky. Kentucky.
Area = 1310 sq.mi.
05100202 -- Middle Fork Kentucky. Kentucky.
Area = 552 sq.mi.
05100203 -- South Fork Kentucky. Kentucky.
Area = 741 sq.mi.
05100204 -- Upper Kentucky. Kentucky.
Area = 1070 sq.mi.
05100205 -- Lower Kentucky. Kentucky.
Area = 3200 sq.mi.
Subregion 0511 -- Green: The Green River Basin. Kentucky, Tennessee.
Area = 9140 sq.mi.
Accounting Unit 051100 -- Green. Kentucky, Tennessee.
Area = 9140 sq.mi.
Cataloging Units 05110001 -- Upper Green. Kentucky.
Area = 3130 sq.mi.
05110002 -- Barren. Kentucky, Tennessee.
Area = 2230 sq.mi.
05110003 -- Middle Green. Kentucky.
Area = 1010 sq.mi.
05110004 -- Rough. Kentucky.
Area = 1070 sq.mi.
05110005 -- Lower Green. Kentucky.
Area = 911 sq.mi.
05110006 -- Pond. Kentucky.
Area = 784 sq.mi.
Subregion 0512 -- Wabash: The Wabash River Basin. Illinois,
Indiana, Ohio.
Area = 32600 sq.mi.
Accounting Unit 051201 -- Wabash: The Wabash River Basin, excluding
the Patoka and White River Basins.
Illinois, Indiana, Ohio.
Area = 20500 sq.mi.
Cataloging Units 05120101 -- Upper Wabash. Indiana, Ohio.
Area = 1570 sq.mi.
05120102 -- Salamonie. Indiana.
Area = 541 sq.mi.
05120103 -- Mississinewa. Indiana, Ohio.
Area = 811 sq.mi.
05120104 -- Eel. Indiana.
Area = 811 sq.mi.
05120105 -- Middle Wabash-Deer. Indiana.
Area = 654 sq.mi.
05120106 -- Tippecanoe. Indiana.
Area = 1930 sq.mi.
05120107 -- Wildcat. Indiana.
Area = 797 sq.mi.
05120108 -- Middle Wabash-Little Vermilion.
Illinois, Indiana.
Area = 2230 sq.mi.
05120109 -- Vermilion. Illinois, Indiana.
Area = 1410 sq.mi.
05120110 -- Sugar. Indiana.
Area = 818 sq.mi.
05120111 -- Middle Wabash-Busseron. Illinois,
Indiana.
Area = 2000 sq.mi.
05120112 -- Embarras. Illinois.
Area = 2430 sq.mi.
05120113 -- Lower Wabash. Illinois, Indiana.
Area = 1300 sq.mi.
05120114 -- Little Wabash. Illinois.
Area = 2120 sq.mi.
05120115 -- Skillet. Illinois.
Area = 1060 sq.mi.
Accounting Unit 051202 -- Patoka-White. The Patoka and White River
Basins. Indiana.
Area = 12100 sq.mi.
Cataloging Units 05120201 -- Upper White. Indiana.
Area = 2700 sq.mi.
05120202 -- Lower White. Indiana.
Area = 1650 sq.mi.
05120203 -- Eel. Indiana.
Area = 1200 sq.mi.
05120204 -- Driftwood. Indiana.
Area = 1150 sq.mi.
05120205 -- Flatrock-Haw. Indiana.
Area = 578 sq.mi.
05120206 -- Upper East Fork White. Indiana.
Area = 806 sq.mi.
05120207 -- Muscatatuck. Indiana.
Area = 1130 sq.mi.
05120208 -- Lower East Fork White. Indiana.
Area = 2030 sq.mi.
05120209 -- Patoka. Indiana.
Area = 854 sq.mi.
Subregion 0513 -- Cumberland: The Cumberland River Basin. Kentucky,
Tennessee.
Area = 17700 sq.mi.
Accounting Unit 051301 -- Upper Cumberland: The Cumberland River
Basin above the confluence with and
including the Caney Fork
Basin. Kentucky, Tennessee.
Area = 10600 sq.mi.
Cataloging Units 05130101 -- Upper Cumberland. Kentucky,
Tennessee.
Area = 2300 sq.mi.
05130102 -- Rockcastle. Kentucky.
Area = 760 sq.mi.
05130103 -- Upper Cumberland-Lake Cumberland.
Kentucky, Tennessee.
Area = 1870 sq.mi.
05130104 -- South Fork Cumberland. Kentucky,
Tennessee.
Area = 1360 sq.mi.
05130105 -- Obey. Kentucky, Tennessee.
Area = 932 sq.mi.
05130106 -- Upper Cumberland-Cordell Hull
Reservoir. Tennessee.
Area = 782 sq.mi.
05130107 -- Collins. Tennessee.
Area = 795 sq.mi.
05130108 -- Caney. Tennessee.
Area = 1780 sq.mi.
Accounting Unit 051302 -- Lower Cumberland: The Cumberland River
Basin below the confluence with the
Caney Fork Basin. Kentucky, Tennessee.
Area = 7150 sq.mi.
Cataloging Units 05130201 -- Lower Cumberland-Old Hickory Lake.
Tennessee.
Area = 975 sq.mi.
05130202 -- Lower Cumberland-Sycamore.
Tennessee.
Area = 642 sq.mi.
05130203 -- Stones. Tennessee.
Area = 921 sq.mi.
05130204 -- Harpeth. Tennessee.
Area = 861 sq.mi.
05130205 -- Lower Cumberland. Kentucky,
Tennessee.
Area = 2300 sq.mi.
05130206 -- Red. Kentucky, Tennessee.
Area = 1450 sq.mi.
Subregion 0514 -- Lower Ohio: The Ohio River Basin below the
confluence with the Kentucky River Basin, to the
confluence with the Mississippi River, excluding
the Cumberland, Green, Tennessee, and Wabash River
Basins. Illinois, Indiana, Kentucky.
Area = 12500 sq.mi.
Accounting Unit 051401 -- Lower Ohio-Salt. The Ohio River Basin
below the confluence with the
Kentucky River Basin, to river mile 703.0
(formerly Lock and Dam 45) on the
Ohio River. Indiana, Kentucky.
Area = 6000 sq.mi.
Cataloging Units 05140101 -- Silver-Little Kentucky. Indiana,
Kentucky.
Area = 1240 sq.mi.
05140102 -- Salt. Kentucky.
Area = 1450 sq.mi.
05140103 -- Rolling Fork. Kentucky.
Area = 1430 sq.mi.
05140104 -- Blue-Sinking. Kentucky, Indiana.
Area = 1880 sq.mi.
Accounting Unit 051402 -- Lower Ohio: The Ohio River Basin from
river mile 703.0 (formerly Lock and
Dam 45) on the Ohio River to the
confluence with the Mississippi River,
excluding the Cumberland, Green,
Tennessee, and Wabash River Basins.
Illinois, Indiana, Kentucky.
Area = 6480 sq.mi.
Cataloging Units 05140201 -- Lower Ohio-Little Pigeon. Indiana, Kentucky.
Area = 1370 sq.mi.
05140202 -- Highland-Pigeon. Indiana, Kentucky.
Area = 1000 sq.mi.
05140203 -- Lower Ohio-Bay. Illinois, Kentucky.
Area = 1090 sq.mi.
05140204 -- Saline. Illinois.
Area = 1160 sq.mi.
05140205 -- Tradewater. Kentucky.
Area = 936 sq.mi.
05140206 -- Lower Ohio. Illinois, Kentucky.
Area = 928 sq.mi.
Region 06 Tennessee Region -- The drainage of the Tennessee River
Basin. Includes parts of Alabama, Georgia, Kentucky,
Mississippi, North Carolina, Tennessee, and Virginia.
Subregion 0601 -- Upper Tennessee: The Tennessee River Basin above
Watts Bar Dam. Georgia, North Carolina, Tennessee,
Virginia.
Area = 17200 sq.mi.
Accounting Unit 060101 -- French Broad-Holston: The Tennessee River
Basin above the confluence of and including
the French Broad and Holston River Basins.
North Carolina, Tennessee, Virginia.
Area = 8820 sq.mi.
Cataloging Units 06010101 -- North Fork Holston. Tennessee,
Virginia.
Area = 708 sq.mi.
06010102 -- South Fork Holston. Tennessee,
Virginia.
Area = 1170 sq.mi.
06010103 -- Watauga. North Carolina, Tennessee.
Area = 870 sq.mi.
06010104 -- Holston. Tennessee.
Area = 990 sq.mi.
06010105 -- Upper French Broad. North Carolina,
Tennessee.
Area = 1870 sq.mi.
06010106 -- Pigeon. North Carolina, Tennessee.
Area = 679 sq.mi.
06010107 -- Lower French Broad. Tennessee.
Area = 792 sq.mi.
06010108 -- Nolichucky. North Carolina,
Tennessee.
Area = 1740 sq.mi.
Accounting Unit 060102 -- Upper Tennessee: The Tennessee River
Basin above Watts Bar Dam, excluding the
French Broad and Holston River Basins.
Georgia, North Carolina, Tennessee,
Virginia.
Area = 8360 sq.mi.
Cataloging Units 06010201 -- Watts Bar Lake. Tennessee.
Area = 1340 sq.mi.
06010202 -- Upper Little Tennessee. Georgia,
North Carolina.
Area = 839 sq.mi.
06010203 -- Tuckasegee. North Carolina.
Area = 731 sq.mi.
06010204 -- Lower Little Tennessee.
North Carolina, Tennessee.
Area = 1050 sq.mi.
06010205 -- Upper Clinch. Tennessee, Virginia.
Area = 1970 sq.mi.
06010206 -- Powell. Tennessee, Virginia.
Area = 939 sq.mi.
06010207 -- Lower Clinch. Tennessee.
Area = 620 sq.mi.
06010208 -- Emory. Tennessee.
Area = 866 sq.mi.
Subregion 0602 -- Middle Tennessee-Hiwassee: The Tennessee River
Basin below Watts Bar Dam to and including the
Sequatchie River Basin. Alabama, Georgia,
North Carolina, Tennessee.
Area = 5160 sq.mi.
Accounting Unit 060200 -- Middle Tennessee-Hiwassee. Alabama,
Georgia, North Carolina, Tennessee.
Area = 5160 sq.mi.
Cataloging Units 06020001 -- Middle Tennessee-Chickamauga.
Alabama, Georgia, Tennessee.
Area = 1870 sq.mi.
06020002 -- Hiwassee. Georgia, North Carolina,
Tennessee.
Area = 2060 sq.mi.
06020003 -- Ocoee. Georgia, North Carolina,
Tennessee.
Area = 648 sq.mi.
06020004 -- Sequatchie. Tennessee.
Area = 586 sq.mi.
Subregion 0603 -- Middle Tennessee-Elk: The Tennessee River Basin
below the confluence with the Sequatchie River
Basin to Pickwick Dam. Alabama, Georgia,
Mississippi, Tennessee.
Area = 10300 sq.mi.
Accounting Unit 060300 -- Middle Tennessee-Elk. Alabama, Georgia,
Mississippi, Tennessee.
Area = 10300 sq.mi.
Cataloging Units 06030001 -- Guntersville Lake. Alabama, Georgia,
Tennessee.
Area = 1990 sq.mi.
06030002 -- Wheeler Lake. Alabama, Tennessee.
Area = 2890 sq.mi.
06030003 -- Upper Elk. Alabama, Tennessee.
Area = 1270 sq.mi.
06030004 -- Lower Elk. Alabama, Tennessee.
Area = 950 sq.mi.
06030005 -- Pickwick Lake. Alabama, Mississippi,
Tennessee.
Area = 2270 sq.mi.
06030006 -- Bear. Alabama, Mississippi.
Area = 930 sq.mi.
Subregion 0604 -- Lower Tennessee: The Tennessee River Basin below
Pickwick Dam. Kentucky, Mississippi, Tennessee.
Area = 8010 sq.mi.
Accounting Unit 060400 -- Lower Tennessee: Kentucky, Mississippi,
Tennessee.
Area = 8010 sq.mi.
Cataloging Units 06040001 -- Lower Tennessee-Beech. Mississippi,
Tennessee.
Area = 2080 sq.mi.
06040002 -- Upper Duck. Tennessee.
Area = 1160 sq.mi.
06040003 -- Lower Duck. Tennessee.
Area = 1540 sq.mi.
06040004 -- Buffalo. Tennessee.
Area = 731 sq.mi.
06040005 -- Kentucky Lake. Kentucky, Tennessee.
Area = 1810 sq.mi.
06040006 -- Lower Tennessee. Kentucky,
Tennessee.
Area = 689 sq.mi.
Region 07 Upper Mississippi Region -- The drainage of the Mississippi
River Basin above the confluence with the Ohio River,
excluding the Missouri River Basin. Includes parts of
Illinois, Indiana, Iowa, Michigan, Minnesota,
Missouri, South Dakota, and Wisconsin.
Subregion 0701 -- Mississippi Headwaters: The Mississippi River Basin
above the confluence with the St. Croix River
Basin, excluding the Minnesota River Basin.
Minnesota.
Area = 20200 sq.mi.
Accounting Unit 070101 -- Mississippi Headwaters: The Mississippi
River Basin above Blanchard Dam.
Minnesota.
Area = 11700 sq.mi.
Cataloging Units 07010101 -- Mississippi Headwaters. Minnesota.
Area = 2010 sq.mi.
07010102 -- Leech Lake. Minnesota.
Area = 1390 sq.mi.
07010103 -- Prairie-Willow. Minnesota.
Area = 2060 sq.mi.
07010104 -- Elk-Nokasippi. Minnesota.
Area = 1680 sq.mi.
07010105 -- Pine. Minnesota.
Area = 774 sq.mi.
07010106 -- Crow Wing. Minnesota.
Area = 1970 sq.mi.
07010107 -- Redeye. Minnesota.
Area = 893 sq.mi.
07010108 -- Long Prairie. Minnesota.
Area = 904 sq.mi.
Accounting Unit 070102 -- Upper Mississippi-Crow-Rum: The
Mississippi River Basin below Blanchard
Dam and above the confluence with the
St. Croix River Basin, excluding the
Minnesota River Basin. Minnesota.
Area = 8520 sq.mi.
Cataloging Units 07010201 -- Platte-Spunk. Minnesota.
Area = 1020 sq.mi.
07010202 -- Sauk. Minnesota.
Area = 1020 sq.mi.
07010203 -- Clearwater-Elk. Minnesota.
Area = 1100 sq.mi.
07010204 -- Crow. Minnesota.
Area = 1460 sq.mi.
07010205 -- South Fork Crow. Minnesota.
Area = 1280 sq.mi.
07010206 -- Twin Cities. Minnesota.
Area = 1080 sq.mi.
07010207 -- Rum. Minnesota.
Area = 1560 sq.mi.
Subregion 0702 -- Minnesota: The Minnesota River Basin. Iowa,
Minnesota, South Dakota.
Area = 16800 sq.mi.
Accounting Unit 070200 -- Minnesota. Iowa, Minnesota, South Dakota.
Area = 16800 sq.mi.
Cataloging Units 07020001 -- Upper Minnesota. Minnesota,
South Dakota.
Area = 1980 sq.mi.
07020002 -- Pomme De Terre. Minnesota.
Area = 901 sq.mi.
07020003 -- Lac Qui Parle. South Dakota,
Minnesota.
Area = 1070 sq.mi.
07020004 -- Hawk-Yellow Medicine. Minnesota.
Area = 2040 sq.mi.
07020005 -- Chippewa. Minnesota.
Area = 2070 sq.mi.
07020006 -- Redwood. Minnesota.
Area = 715 sq.mi.
07020007 -- Middle Minnesota. Minnesota.
Area = 1360 sq.mi.
07020008 -- Cottonwood. Minnesota.
Area = 1290 sq.mi.
07020009 -- Blue Earth. Iowa, Minnesota.
Area = 1570 sq.mi.
07020010 -- Watonwan. Minnesota.
Area = 835 sq.mi.
07020011 -- Le Sueur. Minnesota.
Area = 1110 sq.mi.
07020012 -- Lower Minnesota. Minnesota.
Area = 1810 sq.mi.
Subregion 0703 -- St. Croix: The St. Croix River Basin. Minnesota,
Wisconsin.
Area = 7750 sq.mi.
Accounting Unit 070300 -- St. Croix. Minnesota, Wisconsin.
Area = 7750 sq.mi.
Cataloging Units 07030001 -- Upper St. Croix. Minnesota,
Wisconsin.
Area = 2030 sq.mi.
07030002 -- Namekagon. Wisconsin.
Area = 1030 sq.mi.
07030003 -- Kettle. Minnesota.
Area = 1060 sq.mi.
07030004 -- Snake. Minnesota.
Area = 1020 sq.mi.
07030005 -- Lower St. Croix. Minnesota,
Wisconsin.
Area = 2610 sq.mi.
Subregion 0704 -- Upper Mississippi-Black-Root: The Mississippi River
Basin below the confluence with the St. Croix River
Basin to and including the Root River Basin west of
the Mississippi River and the La Crosse River Basin
east of the Mississippi River, excluding the
Chippewa River Basin. Iowa, Minnesota, Wisconsin.
Area = 10700 sq.mi.
Accounting Unit 070400 -- Upper Mississippi-Black-Root. Iowa,
Minnesota, Wisconsin.
Area = 10700 sq.mi.
Cataloging Units 07040001 -- Rush-Vermillion. Minnesota,
Wisconsin.
Area = 1100 sq.mi.
07040002 -- Cannon. Minnesota.
Area = 1480 sq.mi.
07040003 -- Buffalo-Whitewater. Minnesota,
Wisconsin.
Area = 1370 sq.mi.
07040004 -- Zumbro. Minnesota.
Area = 1430 sq.mi.
07040005 -- Trempealeau. Wisconsin.
Area = 720 sq.mi.
07040006 -- La Crosse-Pine. Minnesota,
Wisconsin.
Area = 678 sq.mi.
07040007 -- Black. Wisconsin.
Area = 2270 sq.mi.
07040008 -- Root. Iowa, Minnesota.
Area = 1670 sq.mi.
Suregion 0705 -- Chippewa: The Chippewa River Basin. Michigan,
Wisconsin.
Area = 9570 sq.mi.
Accounting Unit 070500 -- Chippewa. Michigan, Wisconsin.
Area = 9570 sq.mi.
Cataloging Units 07050001 -- Upper Chippewa. Wisconsin.
Area = 1940 sq.mi.
07050002 -- Flambeau. Michigan, Wisconsin.
Area = 1190 sq.mi.
07050003 -- South Fork Flambeau. Wisconsin.
Area = 767 sq.mi.
07050004 -- Jump. Wisconsin.
Area = 848 sq.mi.
07050005 -- Lower Chippewa. Wisconsin.
Area = 2040 sq.mi.
07050006 -- Eau Claire. Wisconsin.
Area = 871 sq.mi.
07050007 -- Red Cedar. Wisconsin.
Area = 1910 sq.mi.
Subregion 0706 -- Upper Mississippi-Maquoketa-Plum: The Mississippi
River Basin below the Root River Basin west of the
Mississippi River and the La Crosse River Basin east
of the Mississippi River to Lock and Dam 13,
excluding the Wisconsin River Basin. Illinois,
Iowa, Minnesota, Wisconsin.
Area = 8610 sq.mi.
Accounting Unit 070600 -- Upper Mississippi-Maquoketa-Plum.
Illinois, Iowa, Minnesota, Wisconsin.
Area = 8610 sq.mi.
Cataloging Units 07060001 -- Coon-Yellow. Iowa, Minnesota,
Wisconsin.
Area = 1440 sq.mi.
07060002 -- Upper Iowa. Iowa, Minnesota.
Area = 1010 sq.mi.
07060003 -- Grant-Little Maquoketa. Iowa,
Wisconsin.
Area = 1110 sq.mi.
07060004 -- Turkey. Iowa.
Area = 1690 sq.mi.
07060005 -- Apple-Plum. Illinois, Iowa,
Wisconsin.
Area = 1490 sq.mi.
07060006 -- Maquoketa. Iowa.
Area = 1870 sq.mi.
Subregion 0707 -- Wisconsin: The Wisconsin River Basin. Michigan,
Wisconsin.
Area = 11900 sq.mi.
Accounting Unit 070700 -- Wisconsin. Michigan, Wisconsin.
Area = 11900 sq.mi.
Cataloging Units 07070001 -- Upper Wisconsin. Michigan,
Wisconsin.
Area = 2190 sq.mi.
07070002 -- Lake Dubay. Wisconsin.
Area = 2690 sq.mi.
07070003 -- Castle Rock. Wisconsin.
Area = 3250 sq.mi.
07070004 -- Baraboo. Wisconsin.
Area = 660 sq.mi.
07070005 -- Lower Wisconsin. Wisconsin.
Area = 2360 sq.mi.
07070006 -- Kickapoo. Wisconsin.
Area = 753 sq.mi.
Subregion 0708 -- Upper Mississippi-Iowa-Skunk-Wapsipinicon: The
Mississippi River Basin below Lock and Dam 13 to
the confluence with the Des Moines River Basin,
excluding the Rock River Basin. Illinois, Iowa,
Minnesota.
Area = 22800 sq.mi.
Accounting Unit 070801 -- Upper Mississippi-Skunk-Wapsipinicon:
the Mississippi River Basin below Lock and
Dam 13 to the confluence with the
Des Moines River Basin, excluding the
Iowa and Rock River Basins. Illinois,
Iowa, Minnesota.
Area = 10200 sq.mi.
Cataloging Units 07080101 -- Copperas-Duck. Illinois, Iowa.
Area = 1040 sq.mi.
07080102 -- Upper Wapsipinicon. Iowa, Minnesota.
Area = 1550 sq.mi.
07080103 -- Lower Wapsipinicon. Iowa.
Area = 967 sq.mi.
07080104 -- Flint-Henderson. Illinois, Iowa.
Area = 2350 sq.mi.
07080105 -- South Skunk. Iowa.
Area = 1840 sq.mi.
07080106 -- North Skunk. Iowa.
Area = 883 sq.mi.
07080107 -- Skunk. Iowa.
Area = 1610 sq.mi.
Accounting Unit 070802 -- Iowa: The Iowa River Basin. Iowa,
Minnesota.
Area = 12600 sq.mi.
Cataloging Units 07080201 -- Upper Cedar. Iowa, Minnesota.
Area = 1730 sq.mi.
07080202 -- Shell Rock. Iowa, Minnesota.
Area = 1060 sq.mi.
07080203 -- Winnebago. Iowa, Minnesota.
Area = 704 sq.mi.
07080204 -- West Fork Cedar. Iowa.
Area = 850 sq.mi.
07080205 -- Middle Cedar. Iowa.
Area = 2410 sq.mi.
07080206 -- Lower Cedar. Iowa.
Area = 1060 sq.mi.
07080207 -- Upper Iowa. Iowa.
Area = 1430 sq.mi.
07080208 -- Middle Iowa. Iowa.
Area = 1670 sq.mi.
07080209 -- Lower Iowa. Iowa.
Area = 1670 sq.mi.
Subregion 0709 -- Rock: The Rock River Basin. Illinois, Wisconsin.
Area = 10900 sq.mi.
Accounting Unit 070900 -- Rock. Illinois, Wisconsin.
Area = 10900 sq.mi.
Cataloging Units 07090001 -- Upper Rock. Illinois, Wisconsin.
Area = 2920 sq.mi.
07090002 -- Crawfish. Wisconsin.
Area = 788 sq.mi.
07090003 -- Pecatonica. Illinois, Wisconsin.
Area = 1870 sq.mi.
07090004 -- Sugar. Illinois, Wisconsin.
Area = 748 sq.mi.
07090005 -- Lower Rock. Illinois, Wisconsin.
Area = 2180 sq.mi.
07090006 -- Kishwaukee. Illinois, Wisconsin.
Area = 1260 sq.mi.
07090007 -- Green. Illinois.
Area = 1120 sq.mi.
Subregion 0710 -- Des Moines: The Des Moines River Basin. Iowa,
Minnesota, Missouri.
Area = 14400 sq.mi.
Accounting Unit 071000 -- Des Moines. Iowa, Minnesota, Missouri.
Area = 14400 sq.mi.
Cataloging Units 07100001 -- Des Moines Headwaters. Minnesota.
Area = 1250 sq.mi.
07100002 -- Upper Des Moines. Iowa, Minnesota.
Area = 1100 sq.mi.
07100003 -- East Fork Des Moines. Iowa,
Minnesota.
Area = 1310 sq.mi.
07100004 -- Middle Des Moines. Iowa.
Area = 1690 sq.mi.
07100005 -- Boone. Iowa.
Area = 910 sq.mi.
07100006 -- North Raccoon. Iowa.
Area = 2460 sq.mi.
07100007 -- South Raccoon. Iowa.
Area = 1130 sq.mi.
07100008 -- Lake Red Rock. Iowa.
Area = 2400 sq.mi.
07100009 -- Lower Des Moines. Iowa, Missouri.
Area = 2110 sq.mi.
Subregion 0711 -- Upper Mississippi-Salt: The Mississippi River Basin
below the confluence with the Des Moines River
Basin to the confluence with the Missouri River
Basin, excluding the Illinois River Basin.
Illinois, Iowa, Missouri.
Area = 9970 sq.mi.
Accounting Unit 071100 -- Upper Mississippi-Salt. Illinois, Iowa,
Missouri.
Area = 9970 sq.mi.
Cataloging Units 07110001 -- Bear-Wyaconda. Illinois, Iowa,
Missouri.
Area = 1710 sq.mi.
07110002 -- North Fabius. Iowa, Missouri.
Area = 930 sq.mi.
07110003 -- South Fabius. Missouri.
Area = 623 sq.mi.
07110004 -- The Sny. Illinois, Missouri.
Area = 1960 sq.mi.
07110005 -- North Fork Salt. Missouri.
Area = 895 sq.mi.
07110006 -- South Fork Salt. Missouri.
Area = 1190 sq.mi.
07110007 -- Salt. Missouri.
Area = 780 sq.mi.
07110008 -- Cuivre. Missouri.
Area = 1250 sq.mi.
07110009 -- Peruque-Piasa. Illinois, Missouri.
Area = 633 sq.mi.
Subregion 0712 -- Upper Illinois: The Illinois River Basin above the
confluence of and including the Fox River Basin.
Illinois, Indiana, Michigan, Wisconsin.
Area = 10900 sq.mi.
Accounting Unit 071200 -- Upper Illinois. Illinois, Indiana,
Michigan, Wisconsin.
Area = 10900 sq.mi.
Cataloging Units 07120001 -- Kankakee. Illinois, Indiana,
Michigan.
Area = 3010 sq.mi.
07120002 -- Iroquois. Illinois, Indiana.
Area = 2110 sq.mi.
07120003 -- Chicago. Illinois, Indiana.
Area = 622 sq.mi.
07120004 -- Des Plaines. Illinois, Wisconsin.
Area = 1440 sq.mi.
07120005 -- Upper Illinois. Illinois.
Area = 1010 sq.mi.
07120006 -- Upper Fox. Illinois, Wisconsin.
Area = 1570 sq.mi.
07120007 -- Lower Fox. Illinois.
Area = 1090 sq.mi.
Subregion 0713 -- Lower Illinois: The Illinois River Basin below the
confluence of the Fox River Basin. Illinois.
Area = 17700 sq.mi.
Accounting Unit 071300 -- Lower Illinois. Illinois.
Area = 17700 sq.mi.
Cataloging Units 07130001 -- Lower Illinois-Senachwine Lake.
Illinois.
Area = 1950 sq.mi.
07130002 -- Vermilion. Illinois.
Area = 1290 sq.mi.
07130003 -- Lower Illinois-Lake Chautauqua.
Illinois.
Area = 1520 sq.mi.
07130004 -- Mackinaw. Illinois.
Area = 1130 sq.mi.
07130005 -- Spoon. Illinois.
Area = 1860 sq.mi.
07130006 -- Upper Sangamon. Illinois.
Area = 1420 sq.mi.
07130007 -- South Fork Sangamon. Illinois.
Area = 1130 sq.mi.
07130008 -- Lower Sangamon. Illinois.
Area = 928 sq.mi.
07130009 -- Salt. Illinois.
Area = 1890 sq.mi.
07130010 -- La Moine. Illinois.
Area = 1340 sq.mi.
07130011 -- Lower Illinois. Illinois.
Area = 2280 sq.mi.
07130012 -- Macoupin. Illinois.
Area = 966 sq.mi.
Subregion 0714 -- Upper Mississippi-Kaskaskia-Meramec: The
Mississippi River Basin below the confluence with
and excluding the Missouri River Basin to the
confluence with the Ohio River. Illinois, Missouri.
Area = 16900 sq.mi.
Accounting Unit 071401 -- Upper Mississippi-Meramec: The
Mississippi River Basin below the
confluence with and excluding the Missouri
River Basin to the confluence with the
Ohio River, excluding the Kaskaskia River
Basin. Illinois, Missouri.
Area = 11200 sq.mi.
Cataloging Units 07140101 -- Cahokia-Joachim. Illinois, Missouri.
Area = 1650 sq.mi.
07140102 -- Meramec. Missouri.
Area = 2130 sq.mi.
07140103 -- Bourbeuse. Missouri.
Area = 838 sq.mi.
07140104 -- Big. Missouri.
Area = 955 sq.mi.
07140105 -- Upper Mississippi-Cape Girardeau.
Illinois. Missouri.
Area = 1690 sq.mi.
07140106 -- Big Muddy. Illinois.
Area = 2350 sq.mi.
07140107 -- Whitewater. Missouri.
Area = 1210 sq.mi.
07140108 -- Cache. Illinois.
Area = 352 sq.mi.
Accounting Unit 071402 -- Kaskaskia: The Kaskaskia River Basin.
Illinois.
Area = 5700 sq.mi.
Cataloging Units 07140201 -- Upper Kaskaskia. Illinois.
Area = 1540 sq.mi.
07140202 -- Middle Kaskaskia. Illinois.
Area = 1680 sq.mi.
07140203 -- Shoal. Illinois.
Area = 879 sq.mi.
07140204 -- Lower Kaskaskia. Illinois.
Area = 1600 sq.mi.
Region 08 Lower Mississippi Region -- The drainage of: (a) the
Mississippi River below its confluence with the Ohio River,
excluding the Arkansas, Red, and White River Basins
above the points of highest backwater effect of the
Mississippi River in those basins; and (b) coastal streams
that ultimately discharge into the Gulf of Mexico from the
Pearl River Basin boundary to the Sabine River and Sabine Lake
drainage boundary. Includes parts of Arkansas, Kentucky
Louisiana, Mississippi, Missouri, and Tennessee.
Subregion 0801 -- Lower Mississippi-Hatchie: The Mississippi River
Basin from the confluence of the Ohio River
to and including the Horn Lake Creek
Basin, but excluding the drainage west of the
West-Bank Levee along the Mississippi River.
Arkansas, Kentucky, Mississippi, Missouri, and
Tennessee.
Area = 11000 sq.mi.
Accounting Unit 080101 -- Lower Mississippi-Memphis: The
Mississippi alluvial lands lying in the
flood plain of the present channel of the
Mississippi River between the West-Bank
Levee and the drainage Boundaries of the
Major Tributaries along the East Bank,
from the confluence of the Ohio River to
Horn Lake Creek. Arkansas, Kentucky,
Mississippi, Missouri, and Tennessee.
Area = 1110 sq.mi.
Cataloging Unit 08010100 -- Lower Mississippi-Memphis. Arkansas,
Kentucky, Mississippi, Missouri,
and Tennessee.
Area = 1110 sq.mi.
Accounting Unit 080102 -- Hatchie-Obion: The drainage basins east of
the Mississippi River from the Ohio River
Basin to and including the Horn Lake Creek
Basin, but excluding the alluvial
lands lying in the flood plain of the
present channel of the Mississippi River
east of the West-Bank Levee.
Kentucky, Mississippi, and Tennessee.
Area = 9910 sq.mi.
Cataloging Units 08010201 -- Bayou De Chien-Mayfield. Kentucky,
Tennessee.
Area = 957 sq.mi.
08010202 -- Obion. Kentucky, Tennessee.
Area = 1310 sq.mi.
08010203 -- South Fork Obion. Tennessee.
Area = 1150 sq.mi.
08010204 -- North Fork Forked Deer. Tennessee.
Area = 952 sq.mi.
08010205 -- South Fork Forked Deer. Tennessee.
Area = 1050 sq.mi.
08010206 -- Forked Deer. Tennessee.
Area = 70 sq.mi.
08010207 -- Upper Hatchie. Mississippi,
Tennessee.
Area = 1130 sq.mi.
08010208 -- Lower Hatchie. Mississippi,
Tennessee.
Area = 1460 sq.mi.
08010209 -- Loosahatchie. Tennessee.
Area = 736 sq.mi.
08010210 -- Wolf. Mississippi, Tennessee.
Area = 813 sq.mi.
08010211 -- Horn Lake-Nonconnah. Mississippi,
Tennessee.
Area = 281 sq.mi.
Subregion 0802 -- Lower Mississippi - St. Francis: The Mississippi
River Basin from the Horn Lake Creek Basin
on the east bank to and including the Arkansas and
White River Basins below the points of highest
backwater effect of the Mississippi River; excluding
all drainage east of the East-Bank Levee below the
Horn Lake Creek Basin.
Arkansas, Mississippi, and Missouri.
Area = 16700 sq.mi.
Accounting Unit 080201 -- Lower Mississippi-Helena: The Mississippi
alluvial lands lying in the flood plain of
the present channel of the Mississippi
River between the East-Bank Levee and the
levees or the drainage boundaries of the
major tributaries along the west bank,
from Horn Lake Creek to the Arkansas River.
Arkansas, Mississippi.
Area = 566 sq.mi.
Cataloging Unit 08020100 -- Lower Mississippi-Helena. Arkansas,
Mississippi.
Area = 566 sq.mi.
Accounting Unit 080202 -- St. Francis: The St. Francis River Basin
and all man-made diversions into the
Basin. Arkansas, Missouri.
Area = 9040 sq.mi.
Cataloging Units 08020201 -- New Madrid-St. Johns. Missouri.
Area = 703 sq.mi.
08020202 -- Upper St. Francis. Missouri.
Area = 1280 sq.mi.
08020203 -- Lower St. Francis. Arkansas,
Missouri.
Area = 3480 sq.mi.
08020204 -- Little River Ditches. Arkansas, Missouri.
Area = 2620 sq.mi.
08020205 -- L'anguille. Arkansas.
Area = 961 sq.mi.
Accounting Unit 080203 -- Lower White: The White River Basin below
the Little Red River Basin.
Arkansas, Missouri.
Area = 5410 sq.mi.
Cataloging Units 08020301 -- Lower White-Bayou Des Arc. Arkansas.
Area = 1110 sq.mi.
08020302 -- Cache. Arkansas, Missouri.
Area = 2000 sq.mi.
08020303 -- Lower White. Arkansas.
Area = 1360 sq.mi.
08020304 -- Big. Arkansas.
Area = 943 sq.mi.
Accounting Unit 080204 -- Lower Arkansas: The Arkansas River Basin
below the Plum Bayou Basin.
Arkansas.
Area = 1690 sq.mi.
Cataloging Units 08020401 -- Lower Arkansas. Arkansas.
Area = 700 sq.mi.
08020402 -- Bayou Meto. Arkansas.
Area = 993 sq.mi.
Subregion 0803 -- Lower Mississippi - Yazoo: The Mississippi River
Basin from the Arkansas River Basin to and
including the Yazoo River Basin; excluding all
drainage west of the West-Bank Levee below the
Arkansas River Basin. Arkansas, Louisiana,
Mississippi, and Tennessee.
Area = 14100 sq.mi.
Accounting Unit 080301 -- Lower Mississippi-Greenville: The
Mississippi alluvial lands lying in the
flood plain of the present channel of the
Mississippi River between the East-Bank
and the West-Bank Levees, from the Arkansas
River to the Yazoo River. Arkansas,
Mississippi.
Area = 629 sq.mi.
Cataloging Unit 08030100 -- Lower Mississippi-Greenville.
Arkansas, Louisiana, Mississippi.
Area = 629 sq.mi.
Accounting Unit 080302 -- Yazoo: The Yazoo River Basin. Louisiana,
Mississippi, Tennessee.
Area = 13500 sq.mi.
Cataloging Units 08030201 -- Little Tallahatchie. Mississippi.
Area = 1640 sq.mi.
08030202 -- Tallahatchie. Mississippi.
Area = 1010 sq.mi.
08030203 -- Yocona. Mississippi.
Area = 752 sq.mi.
08030204 -- Coldwater. Mississippi, Tennessee.
Area = 1920 sq.mi.
08030205 -- Yalobusha. Mississippi.
Area = 2310 sq.mi.
08030206 -- Upper Yazoo. Mississippi.
Area = 1560 sq.mi.
08030207 -- Big Sunflower. Mississippi.
Area = 3120 sq.mi.
08030208 -- Lower Yazoo. Louisiana, Mississippi.
Area = 222 sq.mi.
08030209 -- Deer-Steele. Louisiana, Mississippi.
Area = 938 sq.mi.
Subregion 0804 -- Lower Red - Ouachita: The Red River Basin below the
Bayou Rigolette Basin, excluding the Boeuf
and Tensas River Basins. Arkansas, Louisiana.
Area = 20500 sq.mi.
Accounting Unit 080401 -- Upper Ouachita: The Ouachita River Basin
above the Two Bayou Basin.
Arkansas.
Area = 5380 sq.mi.
Cataloging Units 08040101 -- Ouachita Headwaters. Arkansas.
Area = 1550 sq.mi.
08040102 -- Upper Ouachita. Arkansas.
Area = 1750 sq.mi.
08040103 -- Little Missouri. Arkansas.
Area = 2080 sq.mi.
Accounting Unit 080402 -- Lower Ouachita: The Ouachita River Basin
below and including the Two Bayou
Basin. Arkansas, Louisiana.
Area = 10700 sq.mi.
Cataloging Units 08040201 -- Lower Ouachita-Smackover. Arkansas.
Area = 1810 sq.mi.
08040202 -- Lower Ouachita-Bayou De Loutre.
Arkansas, Louisiana.
Area = 1300 sq.mi.
08040203 -- Upper Saline. Arkansas.
Area = 1710 sq.mi.
08040204 -- Lower Saline. Arkansas.
Area = 1510 sq.mi.
08040205 -- Bayou Bartholomew. Arkansas,
Louisiana.
Area = 1680 sq.mi.
08040206 -- Bayou D'arbonne. Arkansas,
Louisiana.
Area = 1930 sq.mi.
08040207 -- Lower Ouachita. Louisiana.
Area = 759 sq.mi.
Accounting Unit 080403 -- Lower Red: The Red River Basin below the
Bayou Rigolette Basin, excluding
the Boeuf, Ouachita, and Tensas River
Basins. Louisiana.
Area = 4400 sq.mi.
Cataloging Units 08040301 -- Lower Red. Louisiana.
Area = 898 sq.mi.
08040302 -- Castor. Louisiana.
Area = 966 sq.mi.
08040303 -- Dugdemona. Louisiana.
Area = 927 sq.mi.
08040304 -- Little. Louisiana.
Area = 987 sq.mi.
08040305 -- Black. Louisiana.
Area = 84 sq.mi.
08040306 -- Bayou Cocodrie. Louisiana.
Area = 542 sq.mi.
Subregion 0805 -- Boeuf-Tensas: The Boeuf and Tensas River Basins.
Arkansas, Louisiana.
Area = 5300 sq.mi.
Accounting Unit 080500 -- Boeuf-Tensas. Arkansas, Louisiana.
Area = 5300 sq.mi.
Cataloging Units 08050001 -- Boeuf. Arkansas, Louisiana.
Area = 2890 sq.mi.
08050002 -- Bayou Macon. Arkansas, Louisiana.
Area = 1060 sq.mi.
08050003 -- Tensas. Louisiana.
Area = 1350 sq.mi.
Subregion 0806 -- Lower Mississippi - Big Black: The Mississippi
River Basin from the Yazoo River Basin to the Lower
Old River drainage boundary, but excluding all the
drainage west of the West-Bank Levee along the
Mississippi River. Louisiana, Mississippi.
Area = 7100 sq.mi.
Accounting Unit 080601 -- Lower Mississippi-Natchez: The Mississippi
alluvial lands lying in the flood plain of
the present channel of the Mississippi
River between the West-Bank Levee and the
drainage Boundaries of the major
tributaries along the East Bank, from the
the Yazoo River to the Lower Old River.
Louisiana, Mississippi.
Area = 548 sq.mi.
Cataloging Unit 08060100 -- Lower Mississippi-Natchez. Louisiana,
Mississippi.
Area = 548 sq.mi.
Accounting Unit 080602 -- Big Black - Homochitto: The drainage
Basins east of the Mississippi River from
the Yazoo River Basin to and including the
Buffalo River Basin, but excluding
the alluvial lands lying in the flood plain
of the present channel of the Mississippi
River east of West-Bank Levee.
Louisiana, Mississippi.
Area = 6550 sq.mi.
Cataloging Units 08060201 -- Upper Big Black. Mississippi.
Area = 1470 sq.mi.
08060202 -- Lower Big Black. Louisiana,
Mississippi.
Area = 1900 sq.mi.
08060203 -- Bayou Pierre. Louisiana,
Mississippi.
Area = 1070 sq.mi.
08060204 -- Coles Creek. Louisiana, Mississippi.
Area = 551 sq.mi.
08060205 -- Homochitto. Mississippi.
Area = 1220 sq.mi.
08060206 -- Buffalo. Mississippi.
Area = 343 sq.mi.
Subregion 0807 -- Lower Mississippi-Lake Maurepas: The Mississippi
River Basin from the Lower Old River drainage
boundary to the Bonnet Carre Floodway, and including
the Lower Grand River Basin west of the
West-Bank Levee. Louisiana, Mississippi.
Area = 5870 sq.mi.
Accounting Unit 080701 -- Lower Mississippi-Baton Rouge: The
Mississippi alluvial lands lying in the
flood plain of the present channel of the
Mississippi River between the West-Bank
Levee and the East-Bank Levee or the
drainage boundaries of the major
tributaries along the east bank, from the
Lower Old River to the Bonnet Carre
Floodway. Louisiana.
Area = 270 sq.mi.
Cataloging Unit 08070100 -- Lower Mississippi-Baton Rouge.
Louisiana.
Area = 270 sq.mi.
Accounting Unit 080702 -- Lake Maurepas: The drainage basins east of
the Mississippi River from the Buffalo
River Basin to the Bonnet Carre
Floodway, but excluding the Mississippi
alluvial lands east of the West-Bank Levee;
and including drainage from the north into
Lake Pontchartrain, east to and including
the Tangipahoa River Basin.
Louisiana, Mississippi.
Area = 4810 sq.mi.
Cataloging Units 08070201 -- Bayou Sara-Thompson. Louisiana,
Mississippi.
Area = 698 sq.mi.
08070202 -- Amite. Louisiana, Mississippi.
Area = 1890 sq.mi.
08070203 -- Tickfaw. Louisiana, Mississippi.
Area = 729 sq.mi.
08070204 -- Lake Maurepas. Louisiana.
Area = 719 sq.mi.
08070205 -- Tangipahoa. Louisiana, Mississippi.
Area = 771 sq.mi.
Accounting Unit 080703 -- Lower Grand: The Lower Grand River Basin.
Louisiana.
Area = 792 sq.mi.
Cataloging Unit 08070300 -- Lower Grand. Louisiana.
Area = 792 sq.mi.
Subregion 0808 -- Louisiana Coastal: The Louisiana coastal drainage,
including islands and associated waters, south of
the Red River Basin boundary and west of the
East-Bank Levee of the Atchafalaya Basin Floodway,
to the Sabine River and Sabine Lake drainage
boundary. Louisiana.
Area = 14000 sq.mi.
Accounting Unit 080801 -- Atchafalaya - Vermilion: The Louisiana
Coastal drainage, including islands and
associated waters, south of the Red River
Basin boundary and west of the East-Bank
Levee of the Atchafalaya Basin Floodway, to
and including the drainage into Vermilion
Bay. Louisiana.
Area = 5900 sq.mi.
Cataloging Units 08080101 -- Atchafalaya. Louisiana.
Area = 1930 sq.mi.
08080102 -- Bayou Teche. Louisiana.
Area = 2210 sq.mi.
08080103 -- Vermilion. Louisiana.
Area = 1760 sq.mi.
Accounting Unit 080802 -- Calcasieu - Mermentau: The Louisiana
Coastal drainage and associated waters,
from the Vermilion Bay drainage boundary
to the Sabine River and Sabine Lake
drainage boundary. Louisiana.
Area = 8120 sq.mi.
Cataloging Units 08080201 -- Mermentau Headwaters. Louisiana.
Area = 1400 sq.mi.
08080202 -- Mermentau. Louisiana.
Area = 2390 sq.mi.
08080203 -- Upper Calcasieu. Louisiana.
Area = 1550 sq.mi.
08080204 -- Whisky Chitto. Louisiana.
Area = 884 sq.mi.
08080205 -- West Fork Calcasieu. Louisiana.
Area = 818 sq.mi.
08080206 -- Lower Calcasieu. Louisiana.
Area = 1080 sq.mi.
Subregion 0809 -- Lower Mississippi: The Mississippi River below the
Bonnet Carre Floodway, and the Coastal drainage,
including islands and associated waters, from the
Pearl River Basin boundary and the Mississippi-
Louisiana state line to the East-Bank Levee of the
Atchafalaya Basin Floodway, excluding the drainage
from the north into Lake Pontchartrain, east to the
Tchefuncta River drainage boundary; and excluding
the Lower Grand River Basin. Louisiana.
Area = 9460 sq.mi.
Accounting Unit 080901 -- Lower Mississippi-New Orleans: The
Mississippi River below the Bonnet Carre
Floodway,including the Mississippi Delta.
Louisiana.
Area = 587 sq.mi.
Cataloging Unit 08090100 -- Lower Mississippi-New Orleans.
Louisiana.
Area = 587 sq.mi.
Accounting Unit 080902 -- Lake Pontchartrain: Lake Pontchartrain and
the Coastal drainage, including islands
and associated waters, from the Pearl
River Basin boundary and the Mississippi-
Louisiana state line to the East-Bank
Levee of the Mississippi River, excluding
the drainage from the north into Lake
Pontchartrain, East to the Tchefuncta
River drainage boundary. Louisiana.
Area = 3520 sq.mi.
Cataloging Units 08090201 -- Liberty Bayou-Tchefuncta. Louisiana.
Area = 708 sq.mi.
08090202 -- Lake Pontchartrain. Louisiana.
Area = 648 sq.mi.
08090203 -- Eastern Louisiana Coastal.
Louisiana.
Area = 2160 sq.mi.
Accounting Unit 080903 -- Central Louisiana Coastal: The coastal
drainage, including islands and
associated waters, from the West-Bank
Levee of the Mississippi River to the
East-Bank Levee of the Atchafalaya Basin
Floodway; excluding the Lower Grand River
Basin. Louisiana.
Area = 5350 sq.mi.
Cataloging Units 08090301 -- East Central Louisiana Coastal.
Louisiana.
Area = 2460 sq.mi.
08090302 -- West Central Louisiana Coastal.
Louisiana.
Area = 2890 sq.mi.
Region 09 Souris-Red-Rainy Region -- The drainage within the United
states of the Lake of the Woods and the Rainy, Red, and
Souris River Basins that ultimately discharges into Lake
Winnipeg and Hudson Bay. Includes parts of Minnesota,
North Dakota, and South Dakota.
Subregion 0901 -- Souris: The Souris River Basin within the United
States. North Dakota.
Area = 9150 sq.mi.
Accounting Unit 090100 -- Souris. North Dakota.
Area = 9150 sq.mi.
Cataloging Units 09010001 -- Upper Souris. North Dakota.
Area = 2340 sq.mi.
09010002 -- Des Lacs. North Dakota.
Area = 1030 sq.mi.
09010003 -- Lower Souris. North Dakota.
Area = 2260 sq.mi.
09010004 -- Willow. North Dakota.
Area = 1850 sq.mi.
09010005 -- Deep. North Dakota.
Area = 1670 sq.mi.
Subregion 0902 -- Red: The Red River Basin within the United States
including the Devils Lake closed basin.
Minnesota, North Dakota, South Dakota.
Area = 39800 sq.mi.
Accounting Unit 090201 -- Upper Red: The Red River Basin above the
confluence of and including the Goose and
Marsh River Basins, excluding the Sheyenne
River Basin and the Devils Lake closed
basin. Minnesota, North Dakota,
South Dakota.
Area = 12200 sq.mi.
Cataloging Units 09020101 -- Bois De Sioux. Minnesota,
North Dakota, South Dakota.
Area = 1140 sq.mi.
09020102 -- Mustinka. Minnesota.
Area = 825 sq.mi.
09020103 -- Otter Tail. Minnesota.
Area = 1980 sq.mi.
09020104 -- Upper Red. Minnesota,
North Dakota.
Area = 594 sq.mi.
09020105 -- Western Wild Rice. North Dakota,
South Dakota.
Area = 2380 sq.mi.
09020106 -- Buffalo. Minnesota.
Area = 1150 sq.mi.
09020107 -- Elm-Marsh. Minnesota, North Dakota.
Area = 1150 sq.mi.
09020108 -- Eastern Wild Rice. Minnesota.
Area = 1670 sq.mi.
09020109 -- Goose. North Dakota.
Area = 1280 sq.mi.
Accounting Unit 090202 -- Devils Lake-Sheyenne: The Sheyenne River
Basin and the Devils Lake closed basin
drainage. North Dakota.
Area = 11000 sq.mi.
Cataloging Units 09020201 -- Devils Lake. North Dakota.
Area = 3700 sq.mi.
09020202 -- Upper Sheyenne. North Dakota.
Area = 1940 sq.mi.
09020203 -- Middle Sheyenne. North Dakota.
Area = 2070 sq.mi.
09020204 -- Lower Sheyenne. North Dakota.
Area = 1640 sq.mi.
09020205 -- Maple. North Dakota.
Area = 1620 sq.mi.
Accounting Unit 090203 -- Lower Red: The Red River Basin within the
United States below the confluence of the
Goose and Marsh River Basins. Minnesota,
North Dakota.
Area = 16600 sq.mi.
Cataloging Units 09020301 -- Sandhill-Wilson. Minnesota,
North Dakota.
Area = 1130 sq.mi.
09020302 -- Red Lakes. Minnesota.
Area = 2040 sq.mi.
09020303 -- Red Lake. Minnesota.
Area = 1450 sq.mi.
09020304 -- Thief. Minnesota.
Area = 994 sq.mi.
09020305 -- Clearwater. Minnesota.
Area = 1350 sq.mi.
09020306 -- Grand Marais-Red. Minnesota,
North Dakota.
Area = 482 sq.mi.
09020307 -- Turtle. North Dakota.
Area = 714 sq.mi.
09020308 -- Forest. North Dakota.
Area = 875 sq.mi.
09020309 -- Snake. Minnesota.
Area = 953 sq.mi.
09020310 -- Park. North Dakota.
Area = 1080 sq.mi.
09020311 -- Lower Red. Minnesota, North Dakota.
Area = 1320 sq.mi.
09020312 -- Two Rivers. Minnesota.
Area = 958 sq.mi.
09020313 -- Pembina. North Dakota.
Area = 2020 sq.mi.
09020314 -- Roseau. Minnesota.
Area = 1230 sq.mi.
Subregion 0903 -- Rainy: The Rainy River Basin and Lake of the Woods
drainage within the United States. Minnesota.
Area = 11400 sq.mi.
Accounting Unit 090300 -- Rainy. Minnesota.
Area = 11400 sq.mi.
Cataloging Units 09030001 -- Rainy Headwaters. Minnesota.
Area = 2540 sq.mi.
09030002 -- Vermilion. Minnesota.
Area = 1080 sq.mi.
09030003 -- Rainy Lake. Minnesota.
Area = 908 sq.mi.
09030004 -- Upper Rainy. Minnesota.
Area = 529 sq.mi.
09030005 -- Little Fork. Minnesota.
Area = 1880 sq.mi.
09030006 -- Big Fork. Minnesota.
Area = 2070 sq.mi.
09030007 -- Rapid. Minnesota.
Area = 867 sq.mi.
09030008 -- Lower Rainy. Minnesota.
Area = 292 sq.mi.
09030009 -- Lake of the Woods. Minnesota.
Area = 1220 sq.mi.
Region 10 Missouri Region -- The drainage within the United states of:
(a) the Missouri River Basin, (b) the Saskatchewan River
Basin, and (c) several small closed basins.
Includes all of Nebraska and parts of Colorado, Iowa, Kansas,
Minnesota, Missouri, Montana, North Dakota, South Dakota,
and Wyoming.
Subregion 1001 -- Saskatchewan: The Saskatchewan River Basin within
the United States. Montana.
Area = 697 sq.mi.
Accounting Unit 100100 -- Saskatchewan. Montana.
Area = 697 sq.mi.
Cataloging Units 10010001 -- Belly. Montana.
Area = 192 sq.mi.
10010002 -- St. Mary. Montana.
Area = 505 sq.mi.
Subregion 1002 -- Missouri Headwaters: The Headwaters of the Missouri
River Basin above the confluence of and including
the Gallatin, Jefferson, and Madison River Basins.
Montana, Wyoming.
Area = 14100 sq.mi.
Accounting Unit 100200 -- Missouri Headwaters. Montana,
Wyoming.
Area = 14100 sq.mi.
Cataloging Units 10020001 -- Red Rock. Montana.
Area = 2330 sq.mi.
10020002 -- Beaverhead. Montana.
Area = 1460 sq.mi.
10020003 -- Ruby. Montana.
Area = 988 sq.mi.
10020004 -- Big Hole. Montana.
Area = 2790 sq.mi.
10020005 -- Jefferson. Montana.
Area = 1340 sq.mi.
10020006 -- Boulder. Montana.
Area = 754 sq.mi.
10020007 -- Madison. Montana, Wyoming.
Area = 2570 sq.mi.
10020008 -- Gallatin. Montana, Wyoming.
Area = 1820 sq.mi.
Subregion 1003 -- Missouri-Marias: The Missouri River Basin below the
confluence of the Gallatin, Jefferson, and
Madison River Basins to and including the Marias
River Basin. Montana.
Area = 20100 sq.mi.
Accounting Unit 100301 -- Upper Missouri: The Missouri River Basin
below the confluence of the Gallatin,
Jefferson, and Madison River Basins to,
but excluding the Marias River Basin.
Montana.
Area = 10900 sq.mi.
Cataloging Units 10030101 -- Upper Missouri. Montana.
Area = 3370 sq.mi.
10030102 -- Upper Missouri-Dearborn. Montana.
Area = 2680 sq.mi.
10030103 -- Smith. Montana.
Area = 2020 sq.mi.
10030104 -- Sun. Montana.
Area = 2000 sq.mi.
10030105 -- Belt. Montana.
Area = 806 sq.mi.
Accounting Unit 100302 -- Marias: The Marias River Basin.
Montana.
Area = 9180 sq.mi.
Cataloging Units 10030201 -- Two Medicine. Montana.
Area = 1320 sq.mi.
10030202 -- Cut Bank. Montana.
Area = 1230 sq.mi.
10030203 -- Marias. Montana.
Area = 3680 sq.mi.
10030204 -- Willow. Montana.
Area = 985 sq.mi.
10030205 -- Teton. Montana.
Area = 1960 sq.mi.
Subregion 1004 -- Missouri-Musselshell: The Missouri River Basin
below the confluence of the Marias River Basin to
Fort Peck Dam. Montana.
Area = 23700 sq.mi.
Accounting Unit 100401 -- Fort Peck Lake. The Missouri River Basin
below the confluence of the Marias River
Basin to Fort Peck Dam, excluding the
Musselshell River Basin. Montana.
Area = 14100 sq.mi.
Cataloging Units 10040101 -- Bullwhacker-Dog. Montana.
Area = 1930 sq.mi.
10040102 -- Arrow. Montana.
Area = 1220 sq.mi.
10040103 -- Judith. Montana.
Area = 2780 sq.mi.
10040104 -- Fort Peck Reservoir. Montana.
Area = 5350 sq.mi.
10040105 -- Big Dry. Montana.
Area = 1550 sq.mi.
10040106 -- Little Dry. Montana.
Area = 1250 sq.mi.
Accounting Unit 100402 -- Musselshell: The Musselshell River Basin.
Montana.
Area = 9570 sq.mi.
Cataloging Units 10040201 -- Upper Musselshell. Montana.
Area = 4050 sq.mi.
10040202 -- Middle Musselshell. Montana.
Area = 1920 sq.mi.
10040203 -- Flatwillow. Montana.
Area = 692 sq.mi.
10040204 -- Box Elder. Montana.
Area = 1190 sq.mi.
10040205 -- Lower Musselshell. Montana.
Area = 1720 sq.mi.
Subregion 1005 -- Milk: The Milk River Basin within the United
States, including the Wild Horse Lake closed basin.
Montana.
Area = 15300 sq.mi.
Accounting Unit 100500 -- Milk. Montana.
Area = 15300 sq.mi.
Cataloging Units 10050001 -- Milk Headwaters. Montana.
Area = 520 sq.mi.
10050002 -- Upper Milk. Montana.
Area = 1040 sq.mi.
10050003 -- Wild Horse Lake. Montana.
Area = 91 sq.mi.
10050004 -- Middle Milk. Montana.
Area = 3390 sq.mi.
10050005 -- Big Sandy. Montana.
Area = 851 sq.mi.
10050006 -- Sage. Montana.
Area = 1050 sq.mi.
10050007 -- Lodge. Montana.
Area = 244 sq.mi.
10050008 -- Battle. Montana.
Area = 485 sq.mi.
10050009 -- Peoples. Montana.
Area = 735 sq.mi.
10050010 -- Cottonwood. Montana.
Area = 926 sq.mi.
10050011 -- Whitewater. Montana.
Area = 536 sq.mi.
10050012 -- Lower Milk. Montana.
Area = 1740 sq.mi.
10050013 -- Frenchman. Montana.
Area = 286 sq.mi.
10050014 -- Beaver. Montana.
Area = 1750 sq.mi.
10050015 -- Rock. Montana.
Area = 878 sq.mi.
10050016 -- Porcupine. Montana.
Area = 750 sq.mi.
Subregion 1006 -- Missouri-Poplar: The Missouri River Basin within
the United States from Fort Peck Dam to the
confluence with the Yellowstone River Basin.
Montana.
Area = 10800 sq.mi.
Accounting Unit 100600 -- Missouri-Poplar. Montana.
Area = 10800 sq.mi.
Cataloging Units 10060001 -- Prarie Elk-Wolf. Montana.
Area = 2040 sq.mi.
10060002 -- Redwater. Montana.
Area = 2140 sq.mi.
10060003 -- Poplar. Montana.
Area = 1310 sq.mi.
10060004 -- West Fork Poplar. Montana.
Area = 863 sq.mi.
10060005 -- Charlie-Little Muddy. Montana,
North Dakota.
Area = 1200 sq.mi.
10060006 -- Big Muddy. Montana, North Dakota.
Area = 2590 sq.mi.
10060007 -- Brush Lake closed basin. Montana,
North Dakota.
Area = 680 sq.mi.
Subregion 1007 -- Upper Yellowstone: The Yellowstone River Basin
above the confluence with the Bighorn River Basin.
Montana, Wyoming.
Area = 14400 sq.mi.
Accounting Unit 100700 -- Upper Yellowstone. Montana, Wyoming.
Area = 14400 sq.mi.
Cataloging Units 10070001 -- Yellowstone Headwaters. Montana,
Wyoming.
Area = 2600 sq.mi.
10070002 -- Upper Yellowstone. Montana,
Wyoming.
Area = 2940 sq.mi.
10070003 -- Shields. Montana.
Area = 853 sq.mi.
10070004 -- Upper Yellowstone-Lake Basin.
Montana.
Area = 1580 sq.mi.
10070005 -- Stillwater. Montana.
Area = 1060 sq.mi.
10070006 -- Clarks Fork Yellowstone. Montana,
Wyoming.
Area = 2770 sq.mi.
10070007 -- Upper Yellowstone-Pompeys Pillar.
Montana.
Area = 2000 sq.mi.
10070008 -- Pryor. Montana.
Area = 608 sq.mi.
Subregion 1008 -- Big Horn: The Big Horn River Basin. Montana,
Wyoming.
Area = 22800 sq.mi.
Accounting Unit 100800 -- Big Horn. Montana, Wyoming.
Area = 22800 sq.mi.
Cataloging Units 10080001 -- Upper Wind. Wyoming.
Area = 2540 sq.mi.
10080002 -- Little Wind. Wyoming.
Area = 1090 sq.mi.
10080003 -- Popo Agie. Wyoming.
Area = 798 sq.mi.
10080004 -- Muskrat. Wyoming.
Area = 735 sq.mi.
10080005 -- Lower Wind. Wyoming.
Area = 1710 sq.mi.
10080006 -- Badwater. Wyoming.
Area = 844 sq.mi.
10080007 -- Upper Bighorn. Wyoming.
Area = 3450 sq.mi.
10080008 -- Nowood. Wyoming.
Area = 1990 sq.mi.
10080009 -- Greybull. Wyoming.
Area = 1150 sq.mi.
10080010 -- Big Horn Lake. Montana, Wyoming.
Area = 1800 sq.mi.
10080011 -- Dry. Wyoming.
Area = 438 sq.mi.
10080012 -- North Fork Shoshone. Wyoming.
Area = 853 sq.mi.
10080013 -- South Fork Shoshone. Wyoming.
Area = 659 sq.mi.
10080014 -- Shoshone. Montana, Wyoming.
Area = 1490 sq.mi.
10080015 -- Lower Bighorn. Montana.
Area = 1970 sq.mi.
10080016 -- Little Bighorn. Montana, Wyoming.
Area = 1290 sq.mi.
Subregion 1009 -- Powder-Tongue: The Powder and Tongue River
Basins. Montana, Wyoming.
Area = 18800 sq.mi.
Accounting Unit 100901 -- Tongue: The Tongue River Basin.
Montana, Wyoming.
Area = 5390 sq.mi.
Cataloging Units 10090101 -- Upper Tongue. Montana, Wyoming.
Area = 2530 sq.mi.
10090102 -- Lower Tongue. Montana.
Area = 2860 sq.mi.
Accounting Unit 100902 -- Powder: The Powder River Basin.
Montana, Wyoming.
Area = 13400 sq.mi.
Cataloging Units 10090201 -- Middle Fork Powder. Wyoming.
Area = 1020 sq.mi.
10090202 -- Upper Powder. Wyoming.
Area = 2500 sq.mi.
10090203 -- South Fork Powder. Wyoming.
Area = 1210 sq.mi.
10090204 -- Salt. Wyoming.
Area = 800 sq.mi.
10090205 -- Crazy Woman. Wyoming.
Area = 921 sq.mi.
10090206 -- Clear. Wyoming.
Area = 1150 sq.mi.
10090207 -- Middle Powder. Montana, Wyoming.
Area = 1060 sq.mi.
10090208 -- Little Powder. Montana, Wyoming.
Area = 2030 sq.mi.
10090209 -- Lower Powder. Montana.
Area = 1890 sq.mi.
10090210 -- Mizpah. Montana.
Area = 802 sq.mi.
Subregion 1010 -- Lower Yellowstone: The Yellowstone River Basin
below the confluence with the Big Horn River Basin,
excluding the Tongue and Powder River Basins.
Montana, North Dakota.
Area = 14000 sq.mi.
Accounting Unit 101000 -- Lower Yellowstone. Montana, North Dakota.
Area = 14000 sq.mi.
Cataloging Units 10100001 -- Lower Yellowstone-Sunday. Montana.
Area = 4800 sq.mi.
10100002 -- Big Porcupine. Montana.
Area = 879 sq.mi.
10100003 -- Rosebud. Montana.
Area = 1310 sq.mi.
10100004 -- Lower Yellowstone. Montana,
North Dakota.
Area = 5430 sq.mi.
10100005 -- O'fallon. Montana.
Area = 1590 sq.mi.
Subregion 1011 -- Missouri-Little Missouri: The Missouri River Basin
below the confluence with the Yellowstone River
Basin to Garrison Dam. Montana, North Dakota,
South Dakota, Wyoming.
Area = 17300 sq.mi.
Accounting Unit 101101 -- Lake Sakakawea: The Missouri River Basin
below the confluence with the Yellowstone
River Basin to Garrison Dam, excluding
the Little Missouri River Basin.
North Dakota.
Area = 7740 sq.mi.
Cataloging Units 10110101 -- Lake Sakakawea. North Dakota.
Area = 6790 sq.mi.
10110102 -- Little Muddy. North Dakota.
Area = 953 sq.mi.
Accounting Unit 101102 -- Little Missouri: The Little Missouri River
Basin. Montana, North Dakota,
South Dakota, Wyoming.
Area = 9550 sq.mi.
Cataloging Units 10110201 -- Upper Little Missouri. Montana,
North Dakota, South Dakota, Wyoming.
Area = 3490 sq.mi.
10110202 -- Boxelder. Montana, North Dakota,
South Dakota.
Area = 1210 sq.mi.
10110203 -- Middle Little Missouri. Montana,
North Dakota.
Area = 2180 sq.mi.
10110204 -- Beaver. Montana, North Dakota.
Area = 871 sq.mi.
10110205 -- Lower Little Missouri.
North Dakota.
Area = 1800 sq.mi.
Subregion 1012 -- Cheyenne: The Cheyenne River Basin above the
normal operating pool of Lake Oahe. Montana,
Nebraska, South Dakota, Wyoming.
Area = 24300 sq.mi.
Accounting Unit 101201 -- Cheyenne: The Cheyenne River Basin above
the normal operating pool of Lake Oahe,
excluding the Belle Fourche River Basin.
Nebraska, South Dakota, Wyoming.
Area = 17000 sq.mi.
Cataloging Units 10120101 -- Antelope. Wyoming.
Area = 1030 sq.mi.
10120102 -- Dry Fork Cheyenne. Wyoming.
Area = 484 sq.mi.
10120103 -- Upper Cheyenne. Wyoming.
Area = 1430 sq.mi.
10120104 -- Lance. Wyoming.
Area = 1090 sq.mi.
10120105 -- Lightning. Wyoming.
Area = 1010 sq.mi.
10120106 -- Angostura Reservoir. Nebraska,
South Dakota, Wyoming.
Area = 1410 sq.mi.
10120107 -- Beaver. South Dakota, Wyoming.
Area = 1700 sq.mi.
10120108 -- Hat. Nebraska, South Dakota,
Wyoming.
Area = 971 sq.mi.
10120109 -- Middle Cheyenne-Spring.
South Dakota.
Area = 2110 sq.mi.
10120110 -- Rapid. South Dakota.
Area = 725 sq.mi.
10120111 -- Middle Cheyenne-Elk. South Dakota.
Area = 1560 sq.mi.
10120112 -- Lower Cheyenne. South Dakota.
Area = 1630 sq.mi.
10120113 -- Cherry. South Dakota.
Area = 1870 sq.mi.
Accounting Unit 101202 -- Belle Fourche: The Belle Fourche River
Basin. Montana, South Dakota, Wyoming.
Area = 7290 sq.mi.
Cataloging Units 10120201 -- Upper Belle Fourche. South Dakota,
Wyoming.
Area = 2920 sq.mi.
10120202 -- Lower Belle Fourche. Montana,
South Dakota, Wyoming.
Area = 3290 sq.mi.
10120203 -- Redwater. South Dakota, Wyoming.
Area = 1080 sq.mi.
Subregion 1013 -- Missouri-Oahe: The Missouri River Basin from
Garrison Dam to Oahe Dam, excluding the Cheyenne
River Basin above the normal operating pool of Lake
Oahe. North Dakota, South Dakota.
Area = 37400 sq.mi.
Accounting Unit 101301 -- Lake Oahe: The Missouri River Basin from
Garrison Dam to Oahe Dam, excluding the
Cheyenne River Basin above the normal
operating pool of Lake Oahe and the
Cannonball, Grand, Heart, Knife, and
Moreau River Basins. North Dakota,
South Dakota.
Area = 16700 sq.mi.
Cataloging Units 10130101 -- Painted Woods-Square Butte.
North Dakota.
Area = 2410 sq.mi.
10130102 -- Upper Lake Oahe. North Dakota,
South Dakota.
Area = 3860 sq.mi.
10130103 -- Apple. North Dakota.
Area = 3670 sq.mi.
10130104 -- Beaver. North Dakota.
Area = 1050 sq.mi.
10130105 -- Lower Lake Oahe. South Dakota.
Area = 3570 sq.mi.
10130106 -- West Missouri Coteau. North Dakota,
South Dakota.
Area = 2100 sq.mi.
Accounting Unit 101302 -- Cannonball-Heart-Knife: The Cannonball,
Heart, and Knife River Basins.
North Dakota, South Dakota.
Area = 10300 sq.mi.
Cataloging Units 10130201 -- Knife. North Dakota.
Area = 2530 sq.mi.
10130202 -- Upper Heart. North Dakota.
Area = 1730 sq.mi.
10130203 -- Lower Heart. North Dakota.
Area = 1640 sq.mi.
10130204 -- Upper Cannonball. North Dakota.
Area = 1640 sq.mi.
10130205 -- Cedar. North Dakota, South Dakota.
Area = 1840 sq.mi.
10130206 -- Lower Cannonball. North Dakota.
Area = 899 sq.mi.
Accounting Unit 101303 -- Grand-Moreau: The Grand and Moreau River
Basins above the normal operating pool
of Lake Oahe. North Dakota, South Dakota.
Area = 10400 sq.mi.
Cataloging Units 10130301 -- North Fork Grand. North Dakota,
South Dakota.
Area = 1280 sq.mi.
10130302 -- South Fork Grand. South Dakota.
Area = 1820 sq.mi.
10130303 -- Grand. North Dakota, South Dakota.
Area = 2430 sq.mi.
10130304 -- South Fork Moreau. South Dakota.
Area = 1010 sq.mi.
10130305 -- Upper Moreau. South Dakota.
Area = 1550 sq.mi.
10130306 -- Lower Moreau. South Dakota.
Area = 2340 sq.mi.
Subregion 1014 -- Missouri-White: The Missouri River Basin from
Oahe Dam to Fort Randall Dam. Nebraska,
South Dakota.
Area = 20200 sq.mi.
Accounting Unit 101401 -- Fort Randall Reservoir: The Missouri
River Basin from Oahe Dam to Fort Randall
Dam, excluding the White River Basin
above the normal operating pool of the
Fort Randall Reservoir. South Dakota.
Area = 10400 sq.mi.
Cataloging Units 10140101 -- Fort Randall Reservoir.
South Dakota.
Area = 4390 sq.mi.
10140102 -- Bad. South Dakota.
Area = 3170 sq.mi.
10140103 -- Medicine Knoll. South Dakota.
Area = 941 sq.mi.
10140104 -- Medicine. South Dakota.
Area = 687 sq.mi.
10140105 -- Crow. South Dakota.
Area = 1170 sq.mi.
Accounting Unit 101402 -- White: The White River Basin above the
normal operating pool of the Fort Randall
Reservoir. Nebraska, South Dakota.
Area = 9870 sq.mi.
Cataloging Units 10140201 -- Upper White. Nebraska, South Dakota.
Area = 3810 sq.mi.
10140202 -- Middle White. South Dakota.
Area = 2400 sq.mi.
10140203 -- Little White. Nebraska,
South Dakota.
Area = 1580 sq.mi.
10140204 -- Lower White. South Dakota.
Area = 2080 sq.mi.
Subregion 1015 -- Niobrara: The Niobrara River Basin and the Ponca
Creek Basin. Nebraska, South Dakota, Wyoming.
Area = 13900 sq.mi.
Accounting Unit 101500 -- Niobrara. Nebraska, South Dakota, Wyoming.
Area = 13900 sq.mi.
Cataloging Units 10150001 -- Ponca. Nebraska, South Dakota.
Area = 776 sq.mi.
10150002 -- Niobrara Headwaters. Nebraska,
Wyoming.
Area = 1460 sq.mi.
10150003 -- Upper Niobrara. Nebraska,
South Dakota.
Area = 4180 sq.mi.
10150004 -- Middle Niobrara. Nebraska,
South Dakota.
Area = 3480 sq.mi.
10150005 -- Snake. Nebraska.
Area = 876 sq.mi.
10150006 -- Keya Paha. Nebraska, South Dakota.
Area = 1710 sq.mi.
10150007 -- Lower Niobrara. Nebraska.
Area = 1460 sq.mi.
Subregion 1016 -- James: The James River Basin. North Dakota, South
Dakota.
Area = 21500 sq.mi.
Accounting Unit 101600 -- James. North Dakota, South Dakota.
Area = 21500 sq.mi.
Cataloging Units 10160001 -- James Headwaters. North Dakota.
Area = 1780 sq.mi.
10160002 -- Pipestem. North Dakota.
Area = 1050 sq.mi.
10160003 -- Upper James. North Dakota,
South Dakota.
Area = 4280 sq.mi.
10160004 -- Elm. North Dakota, South Dakota.
Area = 1600 sq.mi.
10160005 -- Mud. South Dakota.
Area = 648 sq.mi.
10160006 -- Middle James. South Dakota.
Area = 3610 sq.mi.
10160007 -- East Missouri Coteau.
South Dakota.
Area = 904 sq.mi.
10160008 -- Snake. South Dakota.
Area = 1500 sq.mi.
10160009 -- Turtle. South Dakota.
Area = 1380 sq.mi.
10160010 -- North Big Sioux Coteau.
South Dakota.
Area = 1250 sq.mi.
10160011 -- Lower James. South Dakota.
Area = 3480 sq.mi.
Subregion 1017 -- Missouri-Big Sioux: The Missouri River Basin from
Fort Randall Dam to and including the Big Sioux
River Basin, but excluding the Ponca Creek,
Niobrara River, and James River Basins. Iowa,
Minnesota, Nebraska, South Dakota.
Area = 13900 sq.mi.
Accounting Unit 101701 -- Lewis and Clark Lake: The Missouri
River Basin from Fort Randall Dam to the
Big Sioux River Basin, but excluding the
Ponca Creek, Niobrara River, and James
River Basins. Nebraska, South Dakota.
Area = 5860 sq.mi.
Cataloging Units 10170101 -- Lewis and Clark Lake. Nebraska,
South Dakota.
Area = 3210 sq.mi.
10170102 -- Vermillion. South Dakota.
Area = 2240 sq.mi.
10170103 -- South Big Sioux Coteau. South Dakota.
Area = 405 sq.mi.
Accounting Unit 101702 -- Big Sioux: The Big Sioux River Basin.
Iowa, Minnesota, South Dakota.
Area = 8030 sq.mi.
Cataloging Units 10170201 -- Middle Big Sioux Coteau.
South Dakota.
Area = 1210 sq.mi.
10170202 -- Upper Big Sioux. Minnesota,
South Dakota.
Area = 1970 sq.mi.
10170203 -- Lower Big Sioux. Iowa,
Minnesota, South Dakota.
Area = 3110 sq.mi.
10170204 -- Rock. Iowa, Minnesota.
Area = 1740 sq.mi.
Subregion 1018 -- North Platte: The North Platte River Basin.
Colorado, Nebraska, Wyoming.
Area = 30900 sq.mi.
Accounting Unit 101800 -- North Platte. Colorado, Nebraska,
Wyoming.
Area = 30900 sq.mi.
Cataloging Units 10180001 -- North Platte Headwaters. Colorado.
Area = 1420 sq.mi.
10180002 -- Upper North Platte. Colorado,
Wyoming.
Area = 2880 sq.mi.
10180003 -- Pathfinder-Seminoe Reservoirs.
Wyoming.
Area = 980 sq.mi.
10180004 -- Medicine Bow. Wyoming.
Area = 1430 sq.mi.
10180005 -- Little Medicine Bow. Wyoming.
Area = 1030 sq.mi.
10180006 -- Sweetwater. Wyoming.
Area = 2880 sq.mi.
10180007 -- Middle North Platte-Casper.
Wyoming.
Area = 3490 sq.mi.
10180008 -- Glendo Reservoir. Wyoming.
Area = 2090 sq.mi.
10180009 -- Middle North Platte-Scotts Bluff.
Nebraska, Wyoming.
Area = 5190 sq.mi.
10180010 -- Upper Laramie. Colorado, Wyoming.
Area = 2180 sq.mi.
10180011 -- Lower Laramie. Wyoming.
Area = 2370 sq.mi.
10180012 -- Horse. Nebraska, Wyoming.
Area = 1650 sq.mi.
10180013 -- Pumpkin. Nebraska, Wyoming.
Area = 1020 sq.mi.
10180014 -- Lower North Platte. Nebraska.
Area = 2270 sq.mi.
Subregion 1019 -- South Platte: The South Platte River Basin.
Colorado, Nebraska, Wyoming.
Area = 23900 sq.mi.
Accounting Unit 101900 -- South Platte. Colorado, Nebraska,
Wyoming.
Area = 23900 sq.mi.
Cataloging Units 10190001 -- South Platte Headwaters. Colorado.
Area = 1590 sq.mi.
10190002 -- Upper South Platte. Colorado.
Area = 1820 sq.mi.
10190003 -- Middle South Platte-Cherry Creek.
Colorado.
Area = 2870 sq.mi.
10190004 -- Clear. Colorado.
Area = 558 sq.mi.
10190005 -- St. Vrain. Colorado.
Area = 978 sq.mi.
10190006 -- Big Thompson. Colorado.
Area = 819 sq.mi.
10190007 -- Cache La Poudre. Colorado,
Wyoming.
Area = 1910 sq.mi.
10190008 -- Lone Tree-Owl. Colorado,
Wyoming.
Area = 573 sq.mi.
10190009 -- Crow. Colorado, Wyoming.
Area = 1410 sq.mi.
10190010 -- Kiowa. Colorado.
Area = 720 sq.mi.
10190011 -- Bijou. Colorado.
Area = 1360 sq.mi.
10190012 -- Middle South Platte-Sterling.
Colorado, Nebraska.
Area = 2900 sq.mi.
10190013 -- Beaver. Colorado.
Area = 1080 sq.mi.
10190014 -- Pawnee. Colorado.
Area = 728 sq.mi.
10190015 -- Upper Lodgepole. Colorado,
Nebraska, Wyoming.
Area = 1130 sq.mi.
10190016 -- Lower Lodgepole. Colorado,
Nebraska, Wyoming.
Area = 1350 sq.mi.
10190017 -- Sidney Draw. Colorado, Nebraska,
Wyoming.
Area = 744 sq.mi.
10190018 -- Lower South Platte. Colorado,
Nebraska.
Area = 1380 sq.mi.
Subregion 1020 -- Platte: The Platte River Basin below the confluence
of the North and South Platte River Basins,
excluding the Elkhorn and Loup River Basins.
Nebraska.
Area = 8160 sq.mi.
Accounting Unit 102001 -- Middle Platte: The Platte River Basin
below the confluence of the North and South
Platte River Basins to the confluence
with the Loup River Basin. Nebraska.
Area = 5130 sq.mi.
Cataloging Units 10200101 -- Middle Platte-Buffalo. Nebraska.
Area = 3270 sq.mi.
10200102 -- Wood. Nebraska.
Area = 736 sq.mi.
10200103 -- Middle Platte-Prairie. Nebraska.
Area = 1120 sq.mi.
Accounting Unit 102002 -- Lower Platte: The Platte River Basin
below the confluence with the Loup River Basin,
excluding the Elkhorn River Basin. Nebraska.
Area = 3030 sq.mi.
Cataloging Units 10200201 -- Lower Platte-Shell. Nebraska.
Area = 879 sq.mi.
10200202 -- Lower Platte. Nebraska.
Area = 531 sq.mi.
10200203 -- Salt. Nebraska.
Area = 1620 sq.mi.
Subregion 1021 -- Loup: The Loup River Basin. Nebraska.
Area = 15000 sq.mi.
Accounting Unit 102100 -- Loup. Nebraska.
Area = 15000 sq.mi.
Cataloging Units 10210001 -- Upper Middle Loup. Nebraska.
Area = 1800 sq.mi.
10210002 -- Dismal. Nebraska.
Area = 2050 sq.mi.
10210003 -- Lower Middle Loup. Nebraska.
Area = 1490 sq.mi.
10210004 -- South Loup. Nebraska.
Area = 1700 sq.mi.
10210005 -- Mud. Nebraska.
Area = 1000 sq.mi.
10210006 -- Upper North Loup. Nebraska.
Area = 2250 sq.mi.
10210007 -- Lower North Loup. Nebraska.
Area = 955 sq.mi.
10210008 -- Calamus. Nebraska.
Area = 1080 sq.mi.
10210009 -- Loup. Nebraska.
Area = 1430 sq.mi.
10210010 -- Cedar. Nebraska.
Area = 1240 sq.mi.
Subregion 1022 -- Elkhorn: The Elkhorn River Basin. Nebraska.
Area = 6950 sq.mi.
Accounting Unit 102200 -- Elkhorn. Nebraska.
Area = 6950 sq.mi.
Cataloging Units 10220001 -- Upper Elkhorn. Nebraska.
Area = 2880 sq.mi.
10220002 -- North Fork Elkhorn. Nebraska.
Area = 843 sq.mi.
10220003 -- Lower Elkhorn. Nebraska.
Area = 2180 sq.mi.
10220004 -- Logan. Nebraska.
Area = 1050 sq.mi.
Subregion 1023 -- Missouri-Little Sioux: The Missouri River Basin
below the confluence with the Big Sioux River Basin
to the confluence with the Platte River Basin.
Iowa, Minnesota, Nebraska.
Area = 9140 sq.mi.
Accounting Unit 102300 -- Missouri-Little Sioux. Iowa, Minnesota,
Nebraska.
Area = 9140 sq.mi.
Cataloging Units 10230001 -- Blackbird-Soldier. Iowa, Nebraska.
Area = 1500 sq.mi.
10230002 -- Floyd. Iowa.
Area = 902 sq.mi.
10230003 -- Little Sioux. Iowa, Minnesota.
Area = 2800 sq.mi.
10230004 -- Monona-Harrison Ditch. Iowa.
Area = 954 sq.mi.
10230005 -- Maple. Iowa.
Area = 747 sq.mi.
10230006 -- Big Papillion-Mosquito. Iowa,
Nebraska.
Area = 1160 sq.mi.
10230007 -- Boyer. Iowa.
Area = 1080 sq.mi.
Subregion 1024 -- Missouri-Nishnabotna: The Missouri River Basin
below the confluence with the Platte River Basin to
the confluence with the Kansas River Basin. Iowa,
Kansas, Missouri, Nebraska.
Area = 13300 sq.mi.
Accounting Unit 102400 -- Missouri-Nishnabotna. Iowa, Kansas,
Missouri, Nebraska.
Area = 13300 sq.mi.
Cataloging Units 10240001 -- Keg-Weeping Water. Iowa, Missouri,
Nebraska.
Area = 783 sq.mi.
10240002 -- West Nishnabotna. Iowa.
Area = 1650 sq.mi.
10240003 -- East Nishnabotna. Iowa.
Area = 1140 sq.mi.
10240004 -- Nishnabotna. Iowa, Missouri.
Area = 173 sq.mi.
10240005 -- Tarkio-Wolf. Iowa, Kansas, Missouri,
Nebraska.
Area = 1640 sq.mi.
10240006 -- Little Nemaha. Nebraska.
Area = 881 sq.mi.
10240007 -- South Fork Big Nemaha. Kansas,
Nebraska.
Area = 705 sq.mi.
10240008 -- Big Nemaha. Kansas, Nebraska.
Area = 1190 sq.mi.
10240009 -- West Nodaway. Iowa.
Area = 782 sq.mi.
10240010 -- Nodaway. Iowa, Missouri.
Area = 968 sq.mi.
10240011 -- Independence-Sugar. Kansas,
Missouri.
Area = 915 sq.mi.
10240012 -- Platte. Iowa, Missouri.
Area = 1670 sq.mi.
10240013 -- One Hundred and Two. Iowa, Missouri.
Area = 773 sq.mi.
Subregion 1025 -- Republican: The Republican River Basin.
Colorado, Kansas, Nebraska.
Area = 24700 sq.mi.
Accounting Unit 102500 -- Republican. Colorado, Kansas,
Nebraska.
Area = 24700 sq.mi.
Cataloging Units 10250001 -- Arikaree. Colorado, Kansas,
Nebraska.
Area = 1710 sq.mi.
10250002 -- North Fork Republican. Colorado,
Kansas, Nebraska.
Area = 3290 sq.mi.
10250003 -- South Fork Republican. Colorado,
Kansas, Nebraska.
Area = 2720 sq.mi.
10250004 -- Upper Republican. Colorado,
Kansas, Nebraska.
Area = 2160 sq.mi.
10250005 -- Frenchman. Colorado, Nebraska.
Area = 1350 sq.mi.
10250006 -- Stinking Water. Colorado, Nebraska.
Area = 1470 sq.mi.
10250007 -- Red Willow. Nebraska.
Area = 783 sq.mi.
10250008 -- Medicine. Nebraska.
Area = 916 sq.mi.
10250009 -- Harlan County Reservoir. Kansas,
Nebraska.
Area = 1350 sq.mi.
10250010 -- Upper Sappa. Kansas.
Area = 1020 sq.mi.
10250011 -- Lower Sappa. Kansas, Nebraska.
Area = 644 sq.mi.
10250012 -- South Fork Beaver. Colorado,
Kansas.
Area = 771 sq.mi.
10250013 -- Little Beaver. Colorado, Kansas.
Area = 604 sq.mi.
10250014 -- Beaver. Kansas, Nebraska.
Area = 731 sq.mi.
10250015 -- Prairie Dog. Kansas, Nebraska.
Area = 1060 sq.mi.
10250016 -- Middle Republican. Kansas, Nebraska.
Area = 2130 sq.mi.
10250017 -- Lower Republican. Kansas.
Area = 1960 sq.mi.
Subregion 1026 -- Smoky Hill: The Smoky Hill River Basin. Colorado,
Kansas.
Area = 19800 sq.mi.
Accounting Unit 102600 -- Smoky Hill. Colorado, Kansas.
Area = 19800 sq.mi.
Cataloging Units 10260001 -- Smoky Hill Headwaters. Colorado,
Kansas.
Area = 1070 sq.mi.
10260002 -- North Fork Smoky Hill. Colorado,
Kansas.
Area = 734 sq.mi.
10260003 -- Upper Smoky Hill. Kansas.
Area = 1470 sq.mi.
10260004 -- Ladder. Colorado, Kansas.
Area = 1430 sq.mi.
10260005 -- Hackberry. Kansas.
Area = 622 sq.mi.
10260006 -- Middle Smoky Hill. Kansas.
Area = 1590 sq.mi.
10260007 -- Big. Kansas.
Area = 852 sq.mi.
10260008 -- Lower Smoky Hill. Kansas.
Area = 1980 sq.mi.
10260009 -- Upper Saline. Kansas.
Area = 1910 sq.mi.
10260010 -- Lower Saline. Kansas.
Area = 1360 sq.mi.
10260011 -- Upper North Fork Solomon. Kansas.
Area = 1350 sq.mi.
10260012 -- Lower North Fork Solomon. Kansas.
Area = 1330 sq.mi.
10260013 -- Upper South Fork Solomon. Kansas.
Area = 1150 sq.mi.
10260014 -- Lower South Fork Solomon. Kansas.
Area = 1040 sq.mi.
10260015 -- Solomon. Kansas.
Area = 1880 sq.mi.
Subregion 1027 -- Kansas: The Kansas River Basin, excluding the
Republican and Smoky Hill River Basins. Kansas,
Nebraska, Missouri.
Area = 15000 sq.mi.
Accounting Unit 102701 -- Kansas: The Kansas River Basin, excluding
the Big Blue, Republican, and Smoky Hill
River Basins. Kansas, Missouri.
Area = 5500 sq.mi.
Cataloging Units 10270101 -- Upper Kansas. Kansas.
Area = 548 sq.mi.
10270102 -- Middle Kansas. Kansas.
Area = 2160 sq.mi.
10270103 -- Delaware. Kansas.
Area = 1150 sq.mi.
10270104 -- Lower Kansas. Kansas, Missouri.
Area = 1640 sq.mi.
Accounting Unit 102702 -- Big Blue: The Big Blue River Basin.
Kansas, Nebraska.
Area = 9540 sq.mi.
Cataloging Units 10270201 -- Upper Big Blue. Nebraska.
Area = 1080 sq.mi.
10270202 -- Middle Big Blue. Nebraska.
Area = 1260 sq.mi.
10270203 -- West Fork Big Blue. Nebraska.
Area = 1330 sq.mi.
10270204 -- Turkey. Nebraska.
Area = 725 sq.mi.
10270205 -- Lower Big Blue. Kansas, Nebraska.
Area = 1650 sq.mi.
10270206 -- Upper Little Blue. Kansas,
Nebraska.
Area = 2160 sq.mi.
10270207 -- Lower Little Blue. Kansas,
Nebraska.
Area = 1330 sq.mi.
Subregion 1028 -- Chariton-Grand: The Chariton, Grand, and Little
Chariton River Basins. Iowa, Missouri.
Area = 10900 sq.mi.
Accounting Unit 102801 -- Grand: The Grand River Basin. Iowa,
Missouri.
Area = 7810 sq.mi.
Cataloging Units 10280101 -- Upper Grand. Iowa, Missouri.
Area = 3280 sq.mi.
10280102 -- Thompson. Iowa, Missouri.
Area = 2200 sq.mi.
10280103 -- Lower Grand. Iowa, Missouri.
Area = 2330 sq.mi.
Accounting Unit 102802 -- Chariton: The Chariton and Little Chariton
River Basins. Iowa, Missouri.
Area = 3070 sq.mi.
Cataloging Units 10280201 -- Upper Chariton. Iowa, Missouri.
Area = 1370 sq.mi.
10280202 -- Lower Chariton. Missouri.
Area = 1020 sq.mi.
10280203 -- Little Chariton. Missouri.
Area = 679 sq.mi.
Subregion 1029 -- Gasconade-Osage: The Gasconade and Osage River
Basins. Kansas, Missouri.
Area = 18400 sq.mi.
Accounting Unit 102901 -- Osage: The Osage River Basin.
Kansas, Missouri.
Area = 14800 sq.mi.
Cataloging Units 10290101 -- Upper Marais Des Cygnes. Kansas.
Area = 2150 sq.mi.
10290102 -- Lower Marais Des Cygnes. Kansas,
Missouri.
Area = 1560 sq.mi.
10290103 -- Little Osage. Kansas, Missouri.
Area = 535 sq.mi.
10290104 -- Marmaton. Kansas, Missouri.
Area = 1080 sq.mi.
10290105 -- Harry S. Truman Reservoir. Missouri.
Area = 1210 sq.mi.
10290106 -- Sac. Missouri.
Area = 1950 sq.mi.
10290107 -- Pomme De Terre. Missouri.
Area = 840 sq.mi.
10290108 -- South Grand. Kansas, Missouri.
Area = 1990 sq.mi.
10290109 -- Lake of the Ozarks. Missouri.
Area = 1370 sq.mi.
10290110 -- Niangua. Missouri.
Area = 1040 sq.mi.
10290111 -- Lower Osage. Missouri.
Area = 1080 sq.mi.
Accounting Unit 102902 -- Gasconade. The Gasconade River Basin.
Missouri.
Area = 3550 sq.mi.
Cataloging Units 10290201 -- Upper Gasconade. Missouri.
Area = 1780 sq.mi.
10290202 -- Big Piney. Missouri.
Area = 754 sq.mi.
10290203 -- Lower Gasconade. Missouri.
Area = 1020 sq.mi.
Subregion 1030 -- Lower Missouri: The Missouri River Basin below the
confluence with the Kansas River Basin to the
confluence with the Mississippi River, excluding
the Chariton, Gasconade, Grand, and Osage River
Basins. Kansas, Missouri.
Area = 10200 sq.mi.
Accounting Unit 103001 -- Lower Missouri-Blackwater. The Missouri
River Basin below the confluence with the
Kansas River Basin to the confluence with
the Gasconade River Basin, excluding the
Chariton, Gasconade, Grand, and Osage
River Basins. Kansas, Missouri.
Area = 8640 sq.mi.
Cataloging Units 10300101 -- Lower Missouri-Crooked. Kansas,
Missouri.
Area = 2650 sq.mi.
10300102 -- Lower Missouri-Moreau. Missouri.
Area = 3360 sq.mi.
10300103 -- Lamine. Missouri.
Area = 1120 sq.mi.
10300104 -- Blackwater. Missouri.
Area = 1510 sq.mi.
Accounting Unit 103002 -- Lower Missouri. The Missouri River
Basin below the confluence with the
Gasconade River Basin to the confluence
with the Mississippi River. Missouri.
Area = 1590 sq.mi.
Cataloging Unit 10300200 -- Lower Missouri. Missouri.
Area = 1590 sq.mi.
Region 11 Arkansas-White-Red Region -- The drainage of the Arkansas,
White, and Red River Basins above the points of highest
backwater effect of the Mississippi River. Includes all of
Oklahoma and parts of Arkansas, Colorado, Kansas, Louisiana,
Missouri, New Mexico, and Texas.
Subregion 1101 -- Upper White: The White River Basin above and
including the Little Red River Basin to the point
of highest backwater effect of the Mississippi
River. Arkansas, Missouri.
Area = 22200 sq.mi.
Accounting Unit 110100 -- Upper White. Arkansas, Missouri.
Area = 22200 sq.mi.
Cataloging Units 11010001 -- Beaver Reservoir. Arkansas, Missouri.
Area = 2540 sq.mi.
11010002 -- James. Missouri.
Area = 1420 sq.mi.
11010003 -- Bull Shoals Lake. Arkansas,
Missouri.
Area = 2600 sq.mi.
11010004 -- Middle White. Arkansas.
Area = 1490 sq.mi.
11010005 -- Buffalo. Arkansas.
Area = 1330 sq.mi.
11010006 -- North Fork White. Arkansas,
Missouri.
Area = 1810 sq.mi.
11010007 -- Upper Black. Arkansas,
Missouri.
Area = 1900 sq.mi.
11010008 -- Current. Arkansas, Missouri.
Area = 2600 sq.mi.
11010009 -- Lower Black. Arkansas, Missouri.
Area = 760 sq.mi.
11010010 -- Spring. Arkansas, Missouri.
Area = 1210 sq.mi.
11010011 -- Eleven Point. Arkansas, Missouri.
Area = 1210 sq.mi.
11010012 -- Strawberry. Arkansas.
Area = 761 sq.mi.
11010013 -- Upper White-Village. Arkansas.
Area = 758 sq.mi.
11010014 -- Little Red. Arkansas.
Area = 1790 sq.mi.
Subregion 1102 -- Upper Arkansas: The Arkansas River Basin above Its
intersect with the Colorado-Kansas state Line.
Colorado, Kansas, New Mexico.
Area = 24600 sq.mi.
Accounting Unit 110200 -- Upper Arkansas. Colorado, Kansas,
New Mexico.
Area = 24600 sq.mi.
Cataloging Units 11020001 -- Arkansas Headwaters. Colorado.
Area = 3020 sq.mi.
11020002 -- Upper Arkansas. Colorado.
Area = 2280 sq.mi.
11020003 -- Fountain. Colorado.
Area = 917 sq.mi.
11020004 -- Chico. Colorado.
Area = 729 sq.mi.
11020005 -- Upper Arkansas-Lake Meredith.
Colorado.
Area = 2170 sq.mi.
11020006 -- Huerfano. Colorado.
Area = 1830 sq.mi.
11020007 -- Apishapa. Colorado.
Area = 1060 sq.mi.
11020008 -- Horse. Colorado.
Area = 1400 sq.mi.
11020009 -- Upper Arkansas-John Martin
Reservoir. Colorado, Kansas.
Area = 3770 sq.mi.
11020010 -- Purgatoire. Colorado, New Mexico.
Area = 3440 sq.mi.
11020011 -- Big Sandy. Colorado.
Area = 1880 sq.mi.
11020012 -- Rush. Colorado.
Area = 1350 sq.mi.
11020013 -- Two Butte. Colorado.
Area = 798 sq.mi.
Subregion 1103 -- Middle Arkansas: The Arkansas River Basin below
its intersect with the Colorado-Kansas state line
to and including the Walnut River Basin,
including the Whitewoman Creek closed basin.
Colorado, Kansas.
Area = 20200 sq.mi.
Accounting Unit 110300 -- Middle Arkansas. Colorado, Kansas.
Area = 20200 sq.mi.
Cataloging Units 11030001 -- Middle Arkansas-Lake Mckinney.
Colorado, Kansas.
Area = 2330 sq.mi.
11030002 -- Whitewoman. Colorado, Kansas.
Area = 1370 sq.mi.
11030003 -- Arkansas-Dodge City. Kansas.
Area = 970 sq.mi.
11030004 -- Coon-Pickerel. Kansas.
Area = 1600 sq.mi.
11030005 -- Pawnee. Kansas.
Area = 1810 sq.mi.
11030006 -- Buckner. Kansas.
Area = 902 sq.mi.
11030007 -- Upper Walnut Creek. Kansas.
Area = 885 sq.mi.
11030008 -- Lower Walnut Creek. Kansas.
Area = 935 sq.mi.
11030009 -- Rattlesnake. Kansas.
Area = 1280 sq.mi.
11030010 -- Gar-Peace. Kansas.
Area = 559 sq.mi.
11030011 -- Cow. Kansas.
Area = 938 sq.mi.
11030012 -- Little Arkansas. Kansas.
Area = 1320 sq.mi.
11030013 -- Middle Arkansas-Slate. Kansas.
Area = 1010 sq.mi.
11030014 -- North Fork Ninnescah. Kansas.
Area = 941 sq.mi.
11030015 -- South Fork Ninnescah. Kansas.
Area = 964 sq.mi.
11030016 -- Ninnescah. Kansas.
Area = 392 sq.mi.
11030017 -- Upper Walnut River. Kansas.
Area = 957 sq.mi.
11030018 -- Lower Walnut River. Kansas.
Area = 1000 sq.mi.
Subregion 1104 -- Upper Cimarron: The Cimarron River Basin from its
headwaters to the river's most downstream intersect
with the Kansas-Oklahoma state line, including the
Bear Creek closed basin. Colorado, Kansas,
New Mexico, Oklahoma.
Area = 12000 sq.mi.
Accounting Unit 110400 -- Upper Cimarron. Colorado, Kansas,
New Mexico, Oklahoma.
Area = 12000 sq.mi.
Cataloging Units 11040001 -- Cimarron headwaters. Colorado,
New Mexico, Oklahoma.
Area = 1730 sq.mi.
11040002 -- Upper Cimarron. Colorado, Kansas,
New Mexico, Oklahoma.
Area = 1750 sq.mi.
11040003 -- North Fork Cimarron. Colorado,
Kansas.
Area = 987 sq.mi.
11040004 -- Sand Arroyo. Colorado, Kansas.
Area = 728 sq.mi.
11040005 -- Bear. Colorado, Kansas.
Area = 1870 sq.mi.
11040006 -- Upper Cimarron-Liberal. Kansas,
Oklahoma.
Area = 1720 sq.mi.
11040007 -- Crooked. Kansas, Oklahoma.
Area = 1430 sq.mi.
11040008 -- Upper Cimarron-Bluff. Kansas,
Oklahoma.
Area = 1800 sq.mi.
Subregion 1105 -- Lower Cimarron: The Cimarron River Basin below the
river's most downstream intersect with the
Kansas-Oklahoma state line to the confluence with
the Arkansas River, including that portion inundated
by Keystone Reservoir. Kansas, Oklahoma.
Area = 7050 sq.mi.
Accounting Unit 110500 -- Lower Cimarron. Kansas, Oklahoma.
Area = 7050 sq.mi.
Cataloging Units 11050001 -- Lower Cimarron-Eagle Chief. Kansas,
Okalhoma.
Area = 2490 sq.mi.
11050002 -- Lower Cimarron-Skeleton. Oklahoma.
Area = 3180 sq.mi.
11050003 -- Lower Cimarron. Oklahoma.
Area = 1380 sq.mi.
Subregion 1106 -- Arkansas - Keystone: The Arkansas River Basin below
the Walnut River Basin to Keystone Dam,
excluding the Cimarron River Basin.
Kansas, Oklahoma.
Area = 9750 sq.mi.
Accounting Unit 110600 -- Arkansas - Keystone. Kansas, Oklahoma.
Area = 9750 sq.mi.
Cataloging Units 11060001 -- Kaw Lake. Kansas, Oklahoma.
Area = 926 sq.mi.
11060002 -- Upper Salt Fork Arkansas. Kansas,
Oklahoma.
Area = 1080 sq.mi.
11060003 -- Medicine Lodge. Kansas, Oklahoma.
Area = 1280 sq.mi.
11060004 -- Lower Salt Fork Arkansas. Kansas,
Oklahoma.
Area = 2340 sq.mi.
11060005 -- Chikaskia. Kansas, Oklahoma.
Area = 2000 sq.mi.
11060006 -- Black Bear-Red Rock. Oklahoma.
Area = 2120 sq.mi.
Subregion 1107 -- Neosho - Verdigris. The Neosho and Verdigris River
Basins. Arkansas, Kansas, Missouri, Oklahoma.
Area = 20500 sq.mi.
Accounting Unit 110701 -- Verdigris: The Verdigris River Basin.
Kansas, Oklahoma.
Area = 8100 sq.mi.
Cataloging Units 11070101 -- Upper Verdigris. Kansas.
Area = 1160 sq.mi.
11070102 -- Fall. Kansas.
Area = 868 sq.mi.
11070103 -- Middle Verdigris. Kansas, Oklahoma.
Area = 1500 sq.mi.
11070104 -- Elk. Kansas.
Area = 673 sq.mi.
11070105 -- Lower Verdigris. Oklahoma.
Area = 692 sq.mi.
11070106 -- Caney. Kansas, Oklahoma.
Area = 2080 sq.mi.
11070107 -- Bird. Oklahoma.
Area = 1130 sq.mi.
Accounting Unit 110702 -- Neosho: The Neosho River Basin.
Arkansas, Kansas, Missouri, Oklahoma.
Area = 12400 sq.mi.
Cataloging Units 11070201 -- Neosho headwaters. Kansas.
Area = 1110 sq.mi.
11070202 -- Upper Cottonwood. Kansas.
Area = 927 sq.mi.
11070203 -- Lower Cottonwood. Kansas.
Area = 968 sq.mi.
11070204 -- Upper Neosho. Kansas.
Area = 1360 sq.mi.
11070205 -- Middle Neosho. Kansas, Oklahoma.
Area = 1420 sq.mi.
11070206 -- Lake O' the Cherokees. Arkansas,
Kansas, Missouri, Oklahoma.
Area = 911 sq.mi.
11070207 -- Spring. Kansas, Missouri,
Oklahoma.
Area = 2500 sq.mi.
11070208 -- Elk. Arkansas, Missouri, Oklahoma.
Area = 1010 sq.mi.
11070209 -- Lower Neosho. Arkansas, Oklahoma.
Area = 2170 sq.mi.
Subregion 1108 -- Upper Canadian: The Canadian River Basin above its
intersect with the New Mexico-Texas state line.
Colorado, New Mexico.
Area = 12500 sq.mi.
Accounting Unit 110800 -- Upper Canadian. Colorado, New Mexico.
Area = 12500 sq.mi.
Cataloging Units 11080001 -- Canadian headwaters. Colorado,
New Mexico.
Area = 1730 sq.mi.
11080002 -- Cimarron. New Mexico.
Area = 1040 sq.mi.
11080003 -- Upper Canadian. New Mexico.
Area = 2020 sq.mi.
11080004 -- Mora. New Mexico.
Area = 1470 sq.mi.
11080005 -- Conchas. New Mexico.
Area = 1030 sq.mi.
11080006 -- Upper Canadian-Ute Reservoir.
New Mexico, Texas.
Area = 2390 sq.mi.
11080007 -- Ute. New Mexico.
Area = 2070 sq.mi.
11080008 -- Revuelto. New Mexico.
Area = 780 sq.mi.
Subregion 1109 -- Lower Canadian: The Canadian River Basin below its
intersect with the New Mexico-Texas state line
to the confluence with the Arkansas River,
including that portion inundated by Eufaula Lake
and Robert S. Kerr Reservoir, but excluding the
North Canadian River Basin. New Mexico,
Oklahoma, Texas.
Area = 16800 sq.mi.
Accounting Unit 110901 -- Middle Canadian: The Canadian River Basin
below its intersect with the
New Mexico-Texas state line to its
intersect with the Oklahoma-Texas state
line. New Mexico, Oklahoma, Texas.
Area = 10100 sq.mi.
Cataloging Units 11090101 -- Middle Canadian-Trujillo. New
Mexico, Texas.
Area = 1700 sq.mi.
11090102 -- Punta De Agua. New Mexico, Texas.
Area = 1560 sq.mi.
11090103 -- Rita Blanca. New Mexico, Oklahoma,
Texas.
Area = 1130 sq.mi.
11090104 -- Carrizo. New Mexico, Texas.
Area = 864 sq.mi.
11090105 -- Lake Meredith. Texas.
Area = 2060 sq.mi.
11090106 -- Middle Canadian-Spring. Texas.
Area = 2780 sq.mi.
Accounting Unit 110902 -- Lower Canadian: The Canadian River Basin
below its intersect with the Oklahoma-
Texas state line to the confluence with
the Arkansas River, including that portion
inundated by Eufaula Lake and Robert S.
Kerr Reservoir, but excluding the North
Canadian River Basin. Oklahoma, Texas.
Area = 6750 sq.mi.
Cataloging Units 11090201 -- Lower Canadian-Deer. Oklahoma,
Texas.
Area = 2010 sq.mi.
11090202 -- Lower Canadian-Walnut. Oklahoma.
Area = 1800 sq.mi.
11090203 -- Little. Oklahoma.
Area = 976 sq.mi.
11090204 -- Lower Canadian. Oklahoma.
Area = 1960 sq.mi.
Subregion 1110 -- North Canadian: The North Canadian River Basin,
including that portion inundated by Eufaula Lake.
Kansas, New Mexico, Oklahoma, Texas.
Area = 17500 sq.mi.
Accounting Unit 111001 -- Upper Beaver. The Beaver River Basin to
and including the Home Creek Basin.
Kansas, New Mexico, Oklahoma,
Texas.
Area = 7800 sq.mi.
Cataloging Units 11100101 -- Upper Beaver. New Mexico,
Oklahoma, Texas.
Area = 2710 sq.mi.
11100102 -- Middle Beaver. Kansas, Oklahoma.
Area = 1280 sq.mi.
11100103 -- Coldwater. Oklahoma, Texas.
Area = 1780 sq.mi.
11100104 -- Palo Duro. Oklahoma, Texas.
Area = 2030 sq.mi.
Accounting Unit 111002 -- Lower Beaver: The Beaver River Basin below
the Home Creek Basin to and
including the Wolf Creek Basin.
Oklahoma, Texas.
Area = 3590 sq.mi.
Cataloging Units 11100201 -- Lower Beaver. Oklahoma, Texas.
Area = 1740 sq.mi.
11100202 -- Upper Wolf. Texas.
Area = 779 sq.mi.
11100203 -- Lower Wolf. Oklahoma, Texas.
Area = 1070 sq.mi.
Accounting Unit 111003 -- Lower North Canadian: The North
Canadian River Basin, including that
portion inundated by Eufaula Lake, but
excluding the Beaver River Basin above its
confluence with the Wolf Creek Basin.
Oklahoma.
Area = 6160 sq.mi.
Cataloging Units 11100301 -- Middle North Canadian. Oklahoma.
Area = 1770 sq.mi.
11100302 -- Lower North Canadian. Oklahoma.
Area = 1830 sq.mi.
11100303 -- Deep Fork. Oklahoma.
Area = 2560 sq.mi.
Subregion 1111 -- Lower Arkansas: The Arkansas River Basin below
Keystone Dam to the point of highest backwater
effect of the Mississippi River below Lock and Dam 4
on the Arkansas River, but excluding the Canadian,
Neosho, and Verdigris River Basins. Arkansas,
Oklahoma.
Area = 15600 sq.mi.
Accounting Unit 111101 -- Robert S. Kerr Reservoir: The Arkansas
River Basin below Keystone Dam to Lock and
Dam 13, but excluding the Canadian,
Neosho, and Verdigris River Basins.
Arkansas. Oklahoma.
Area = 7340 sq.mi.
Cataloging Units 11110101 -- Polecat-Snake. Oklahoma.
Area = 1310 sq.mi.
11110102 -- Dirty-Greenleaf. Oklahoma.
Area = 769 sq.mi.
11110103 -- Illinois. Arkansas, Oklahoma.
Area = 1620 sq.mi.
11110104 -- Robert S. Kerr Reservoir.
Arkansas, Oklahoma.
Area = 1780 sq.mi.
11110105 -- Poteau. Arkansas, Oklahoma.
Area = 1860 sq.mi.
Accounting Unit 111102 -- Lower Arkansas-Fourche La Fave: The
Arkansas River Basin below Lock and Dam
13 to the point of highest backwater
effect of the Mississippi River below Lock
and Dam 4 on the Arkansas River.
Arkansas.
Area = 8300 sq.mi.
Cataloging Units 11110201 -- Frog-Mulberry. Arkansas.
Area = 1270 sq.mi.
11110202 -- Dardanelle Reservoir. Arkansas.
Area = 1860 sq.mi.
11110203 -- Lake Conway-Point Remove.
Arkansas.
Area = 1140 sq.mi.
11110204 -- Petit Jean. Arkansas.
Area = 1070 sq.mi.
11110205 -- Cadron. Arkansas.
Area = 751 sq.mi.
11110206 -- Fourche La Fave. Arkansas.
Area = 1100 sq.mi.
11110207 -- Lower Arkansas-Maumelle.
Arkansas.
Area = 1100 sq.mi.
Subregion 1112 -- Red headwaters: The North Fork Red River,
Prairie Dog Town Fork Red River, and the Salt Fork
Red River Basins. New Mexico, Oklahoma, Texas.
Area = 14600 sq.mi.
Accounting Unit 111201 -- Prairie Dog Town Fork Red: The Prairie Dog
Town Fork Red River Basin. New Mexico,
Oklahoma, Texas.
Area = 7630 sq.mi.
Cataloging Units 11120101 -- Tierra Blanca. New Mexico,
Texas.
Area = 1910 sq.mi.
11120102 -- Palo Duro. New Mexico, Texas.
Area = 966 sq.mi.
11120103 -- Upper Prairie Dog Town Fork Red.
Texas.
Area = 2120 sq.mi.
11120104 -- Tule. Texas.
Area = 1100 sq.mi.
11120105 -- Lower Prairie Dog Town Fork Red.
Oklahoma, Texas.
Area = 1530 sq.mi.
Accounting Unit 111202 -- Salt Fork Red: The Salt Fork Red River
Basin. Oklahoma, Texas.
Area = 2000 sq.mi.
Cataloging Units 11120201 -- Upper Salt Fork Red. Texas.
Area = 740 sq.mi.
11120202 -- Lower Salt Fork Red. Oklahoma,
Texas.
Area = 1260 sq.mi.
Accounting Unit 111203 -- North Fork Red: The North Fork Red River
Basin. Oklahoma, Texas.
Area = 5000 sq.mi.
Cataloging Units 11120301 -- Upper North Fork Red. Texas.
Area = 1160 sq.mi.
11120302 -- Middle North Fork Red. Oklahoma,
Texas.
Area = 1630 sq.mi.
11120303 -- Lower North Fork Red. Oklahoma.
Area = 1330 sq.mi.
11120304 -- Elm Fork Red. Oklahoma, Texas.
Area = 878 sq.mi.
Subregion 1113 -- Red - Washita: The Red River Basin above
Denison Dam, excluding the North Fork Red
River, Prairie Dog Town Fork Red River, and the
Salt Fork Red River Basins. Oklahoma, Texas.
Area = 24600 sq.mi.
Accounting Unit 111301 -- Red-Pease: The Red River Basin
from the Prairie Dog Town Fork Red River
Basin to the Cache Creek Basin,
excluding the North Fork Red River and the
Salt Fork Red River Basins. Oklahoma,
Texas.
Area = 5730 sq.mi.
Cataloging Units 11130101 -- Groesbeck-Sandy. Oklahoma,
Texas.
Area = 1300 sq.mi.
11130102 -- Blue-China. Oklahoma, Texas.
Area = 794 sq.mi.
11130103 -- North Pease. Texas.
Area = 1460 sq.mi.
11130104 -- Middle Pease. Texas.
Area = 1420 sq.mi.
11130105 -- Pease. Texas.
Area = 760 sq.mi.
Accounting Unit 111302 -- Red-Lake Texoma: The Red River Basin from
and including the Cache Creek
Basin to Denison
Dam, including that portion inundated by
Lake Texoma, but excluding the Washita
River Basin. Oklahoma, Texas.
Area = 11000 sq.mi.
Cataloging Units 11130201 -- Farmers-Mud. Oklahoma, Texas.
Area = 2340 sq.mi.
11130202 -- Cache. Oklahoma.
Area = 785 sq.mi.
11130203 -- West Cache. Oklahoma.
Area = 1120 sq.mi.
11130204 -- North Wichita. Texas.
Area = 1090 sq.mi.
11130205 -- South Wichita. Texas.
Area = 702 sq.mi.
11130206 -- Wichita. Texas.
Area = 1010 sq.mi.
11130207 -- Southern Beaver. Texas.
Area = 679 sq.mi.
11130208 -- Northern Beaver. Oklahoma.
Area = 847 sq.mi.
11130209 -- Little Wichita. Texas.
Area = 1470 sq.mi.
11130210 -- Lake Texoma. Oklahoma, Texas.
Area = 982 sq.mi.
Accounting Unit 111303 -- Washita. The Washita River Basin,
including that portion inundated by Lake
Texoma. Oklahoma.
Area = 7870 sq.mi.
Cataloging Units 11130301 -- Washita headwaters. Oklahoma,
Texas.
Area = 1460 sq.mi.
11130302 -- Upper Washita. Oklahoma.
Area = 3190 sq.mi.
11130303 -- Middle Washita. Oklahoma.
Area = 2490 sq.mi.
11130304 -- Lower Washita. Oklahoma.
Area = 727 sq.mi.
Subregion 1114 -- Red-Sulphur: The Red River Basin below Denison Dam
to and including the Bayou Rigolette Basin at the
point of highest backwater effect of the
Mississippi River. Arkansas, Louisiana,
Oklahoma, Texas.
Area = 27600 sq.mi.
Accounting Unit 111401 -- Red-Little: The Red River Basin below
Denison Dam to and including the Little
River Basin. Arkansas, Oklahoma,
Texas.
Area = 12500 sq.mi.
Cataloging Units 11140101 -- Bois D'arc-Island. Oklahoma,
Texas.
Area = 2010 sq.mi.
11140102 -- Blue. Oklahoma.
Area = 643 sq.mi.
11140103 -- Muddy Boggy. Oklahoma.
Area = 1420 sq.mi.
11140104 -- Clear Boggy. Oklahoma.
Area = 1000 sq.mi.
11140105 -- Kiamichi. Arkansas, Oklahoma.
Area = 1820 sq.mi.
11140106 -- Pecan-Waterhole. Arkansas,
Oklahoma, Texas.
Area = 1460 sq.mi.
11140107 -- Upper Little. Oklahoma.
Area = 1400 sq.mi.
11140108 -- Mountain Fork. Arkansas, Oklahoma.
Area = 821 sq.mi.
11140109 -- Lower Little. Arkansas, Oklahoma.
Area = 1950 sq.mi.
Accounting Unit 111402 -- Red-Saline: The Red River Basin below
the Little River Basin to and
including the Bayou Rigolette Basin at the
point of highest backwater effect of the
Mississippi River, excluding the Big
Cypress and Sulphur River Basins.
Arkansas, Louisiana.
Area = 7740 sq.mi.
Cataloging Units 11140201 -- Mckinney-Posten Bayous. Arkansas,
Louisiana, Texas.
Area = 906 sq.mi.
11140202 -- Middle Red-Coushatta. Louisiana.
Area = 276 sq.mi.
11140203 -- Loggy Bayou. Arkansas, Louisiana.
Area = 1470 sq.mi.
11140204 -- Red Chute. Louisiana.
Area = 381 sq.mi.
11140205 -- Bodcau Bayou. Arkansas, Louisiana.
Area = 766 sq.mi.
11140206 -- Bayou Pierre. Louisiana.
Area = 1110 sq.mi.
11140207 -- Lower Red-Lake Iatt. Louisiana.
Area = 1450 sq.mi.
11140208 -- Saline Bayou. Louisiana.
Area = 477 sq.mi.
11140209 -- Black Lake Bayou. Louisiana.
Area = 908 sq.mi.
Accounting Unit 111403 -- Big Cypress - Sulphur. The Cross Bayou and
Sulphur River Basins, including
the Big Cypress Creek Basin.
Arkansas, Louisiana.
Area = 7310 sq.mi.
Cataloging Units 11140301 -- Sulphur headwaters. Texas.
Area = 1160 sq.mi.
11140302 -- Lower Sulphur. Arkansas, Texas.
Area = 1810 sq.mi.
11140303 -- White Oak Bayou. Texas.
Area = 783 sq.mi.
11140304 -- Cross Bayou. Arkansas, Louisiana,
Texas.
Area = 756 sq.mi.
11140305 -- Lake O'the Pines. Texas.
Area = 901 sq.mi.
11140306 -- Caddo Lake. Louisiana, Texas.
Area = 1180 sq.mi.
11140307 -- Little Cypress. Texas.
Area = 720 sq.mi.
Region 12 Texas-Gulf Region -- The drainage that discharges into the
Gulf of Mexico from and including Sabine Pass to
the Rio Grande Basin boundary. Includes parts of
Louisiana, New Mexico, and Texas.
Subregion 1201 -- Sabine: The Sabine River Basin above Sabine Lake.
Louisiana, Texas.
Area = 9860 sq.mi.
Accounting Unit 120100 -- Sabine. Louisiana, Texas.
Area = 9860 sq.mi.
Cataloging Units 12010001 -- Upper Sabine. Texas.
Area = 1380 sq.mi.
12010002 -- Middle Sabine. Louisiana, Texas.
Area = 2760 sq.mi.
12010003 -- Lake Fork. Texas.
Area = 689 sq.mi.
12010004 -- Toledo Bend Reservoir. Louisiana,
Texas.
Area = 2390 sq.mi.
12010005 -- Lower Sabine. Louisiana, Texas.
Area = 2640 sq.mi.
Subregion 1202 -- Neches: The Neches River Basin above Sabine Lake.
Texas.
Area = 10000 sq.mi.
Accounting Unit 120200 -- Neches. Texas.
Area = 10000 sq.mi.
Cataloging Units 12020001 -- Upper Neches. Texas.
Area = 1940 sq.mi.
12020002 -- Middle Neches. Texas.
Area = 1630 sq.mi.
12020003 -- Lower Neches. Texas.
Area = 1130 sq.mi.
12020004 -- Upper Angelina. Texas.
Area = 1610 sq.mi.
12020005 -- Lower Angelina. Texas.
Area = 1940 sq.mi.
12020006 -- Village. Texas.
Area = 1100 sq.mi.
12020007 -- Pine Island Bayou. Texas.
Area = 670 sq.mi.
Subregion 1203 -- Trinity: The Trinity River Basin above Trinity
Bay. Texas.
Area = 18000 sq.mi.
Accounting Unit 120301 -- Upper Trinity: The Trinity River Basin
above and including the Richland Creek
Basin. Texas.
Area = 11800 sq.mi.
Cataloging Units 12030101 -- Upper West Fork Trinity. Texas.
Area = 1970 sq.mi.
12030102 -- Lower West Fork Trinity. Texas.
Area = 1510 sq.mi.
12030103 -- Elm Fork Trinity. Texas.
Area = 1840 sq.mi.
12030104 -- Denton. Texas.
Area = 727 sq.mi.
12030105 -- Upper Trinity. Texas.
Area = 1370 sq.mi.
12030106 -- East Fork Trinity. Texas.
Area = 1300 sq.mi.
12030107 -- Cedar. Texas.
Area = 1070 sq.mi.
12030108 -- Richland. Texas.
Area = 917 sq.mi.
12030109 -- Chambers. Texas.
Area = 1070 sq.mi.
Accounting Unit 120302 -- Lower Trinity: The Trinity River Basin
below the Richland Creek Basin to but
excluding Trinity Bay. Texas.
Area = 6210 sq.mi.
Cataloging Units 12030201 -- Lower Trinity-Tehuacana. Texas.
Area = 2140 sq.mi.
12030202 -- Lower Trinity-Kickapoo. Texas.
Area = 3250 sq.mi.
12030203 -- Lower Trinity. Texas.
Area = 815 sq.mi.
Subregion 1204 -- Galveston Bay-San Jacinto: The coastal drainage
and associated waters from and including Sabine
Pass to the Brazos River Basin boundary, but
excluding the Neches and Sabine River Basins above
Sabine Lake and the Trinity River Basin above
Trinity Bay. Louisiana, Texas.
Area = 7980 sq.mi.
Accounting Unit 120401 -- San Jacinto: The San Jacinto River Basin
above Galveston Bay. Texas.
Area = 3980 sq.mi.
Cataloging Units 12040101 -- West Fork San Jacinto. Texas.
Area = 1080 sq.mi.
12040102 -- Spring. Texas.
Area = 760 sq.mi.
12040103 -- East Fork San Jacinto. Texas.
Area = 1010 sq.mi.
12040104 -- Buffalo-San Jacinto. Texas.
Area = 1130 sq.mi.
Accounting Unit 120402 -- Galveston Bay-Sabine Lake: The coastal
drainage and associated waters from and
including Sabine Pass to the Brazos River
Basin boundary, but excluding the Neches
and Sabine River Basins above the Sabine Lake,
the Trinity River Basin above Trinity
Bay, and the San Jacinto River above
Galveston Bay. Louisiana, Texas.
Area = 4000 sq.mi.
Cataloging Units 12040201 -- Sabine Lake. Louisiana, Texas.
Area = 1040 sq.mi.
12040202 -- East Galveston Bay. Texas.
Area = 795 sq.mi.
12040203 -- North Galveston Bay. Texas.
Area = 395 sq.mi.
12040204 -- West Galveston Bay. Texas.
Area = 1130 sq.mi.
12040205 -- Austin-Oyster. Texas.
Area = 637 sq.mi.
Subregion 1205 -- Brazos headwaters: The Brazos River Basin above the
confluence of and including the Double Mountain Fork
Brazos River and the Salt Fork Brazos River Basins.
New Mexico, Texas.
Area = 14600 sq.mi.
Accounting Unit 120500 -- Brazos headwaters. New Mexico, Texas.
Area = 14600 sq.mi.
Cataloging Units 12050001 -- Yellow House Draw. New Mexico,
Texas.
Area = 3780 sq.mi.
12050002 -- Blackwater Draw. New Mexico, Texas.
Area = 1560 sq.mi.
12050003 -- North Fork Double Mountain Fork
Brazos. Texas.
Area = 1050 sq.mi.
12050004 -- Double Moutain Fork Brazos. Texas.
Area = 2740 sq.mi.
12050005 -- Running Water Draw. New Mexico,
Texas.
Area = 1620 sq.mi.
12050006 -- White. Texas.
Area = 1690 sq.mi.
12050007 -- Salt Fork Brazos. Texas.
Area = 2150 sq.mi.
Subregion 1206 -- Middle Brazos: The Brazos River Basin below the
confluence of the Double Mountain Fork Brazos River
and the Salt Fork Brazos River Basins to and
including the Castleman Creek Basin.
Texas.
Area = 15500 sq.mi.
Accounting Unit 120601 -- Middle Brazos-Clear Fork: The Brazos River
Basin below the confluence of the Double
Mountain Fork Brazos River and the
Salt Fork Brazos River Basins to and
including the Clear Fork Brazos River
Basin. Texas.
Area = 8220 sq.mi.
Cataloging Units 12060101 -- Middle Brazos-Millers. Texas.
Area = 2490 sq.mi.
12060102 -- Upper Clear Fork Brazos. Texas.
Area = 2730 sq.mi.
12060103 -- Paint. Texas.
Area = 1080 sq.mi.
12060104 -- Lower Clear Fork Brazos. Texas.
Area = 620 sq.mi.
12060105 -- Hubbard. Texas.
Area = 1300 sq.mi.
Accounting Unit 120602 -- Middle Brazos-Bosque: The Brazos River
Basin below the Clear Fork Brazos
River Basin to and including the
Castleman Creek Basin. Texas.
Area = 7320 sq.mi.
Cataloging Units 12060201 -- Middle Brazos-Palo Pinto. Texas.
Area = 3160 sq.mi.
12060202 -- Middle Brazos-Lake Whitney. Texas.
Area = 2500 sq.mi.
12060203 -- Bosque. Texas.
Area = 418 sq.mi.
12060204 -- North Bosque. Texas.
Area = 1240 sq.mi.
Subregion 1207 -- Lower Brazos: The Brazos River Basin below
the Castleman Creek Basin.
Texas.
Area = 15600 sq.mi.
Accounting Unit 120701 -- Lower Brazos: The Brazos River Basin
below the Castleman Creek
Basin, excluding the Little
River Basin. Texas.
Area = 7960 sq.mi.
Cataloging Units 12070101 -- Lower Brazos-Little Brazos. Texas.
Area = 2720 sq.mi.
12070102 -- Yegua. Texas.
Area = 1330 sq.mi.
12070103 -- Navasota. Texas.
Area = 2260 sq.mi.
12070104 -- Lower Brazos. Texas.
Area = 1650 sq.mi.
Accounting Unit 120702 -- Little: The Little River Basin. Texas.
Area = 7610 sq.mi.
Cataloging Units 12070201 -- Leon. Texas.
Area = 3000 sq.mi.
12070202 -- Cowhouse. Texas.
Area = 743 sq.mi.
12070203 -- Lampasas. Texas.
Area = 1510 sq.mi.
12070204 -- Little. Texas.
Area = 1000 sq.mi.
12070205 -- San Gabriel. Texas.
Area = 1360 sq.mi.
Subregion 1208 -- Upper Colorado: The Colorado River Basin above and
including the Oak Creek Basin. New Mexico,
Texas.
Area = 16000 sq.mi.
Accounting Unit 120800 -- Upper Colorado. New Mexico, Texas.
Area = 16000 sq.mi.
Cataloging Units 12080001 -- Lost Draw. New Mexico, Texas.
Area = 2370 sq.mi.
12080002 -- Colorado headwaters. Texas.
Area = 2680 sq.mi.
12080003 -- Monument-Seminole Draws.
New Mexico, Texas.
Area = 2680 sq.mi.
12080004 -- Mustang Draw. New Mexico, Texas.
Area = 2640 sq.mi.
12080005 -- Johnson Draw. Texas.
Area = 1910 sq.mi.
12080006 -- Sulphur Springs Draw. New Mexico,
Texas.
Area = 1720 sq.mi.
12080007 -- Beals. Texas.
Area = 632 sq.mi.
12080008 -- Upper Colorado. Texas.
Area = 1380 sq.mi.
Subregion 1209 -- Lower Colorado-San Bernard Coastal: The Colorado
River Basin below the Oak Creek
Basin; and the Coastal drainage and
associated waters from the Brazos River Basin
boundary to the Colorado River Basin boundary.
Texas.
Area = 28400 sq.mi.
Accounting Unit 120901 -- Middle Colorado-Concho: The Colorado
River Basin below the Oak
Creek Basin to and including
the San Saba River Basin. Texas.
Area = 15200 sq.mi.
Cataloging Units 12090101 -- Middle Colorado-Elm. Texas.
Area = 1160 sq.mi.
12090102 -- South Concho. Texas.
Area = 1350 sq.mi.
12090103 -- Middle Concho. Texas.
Area = 2650 sq.mi.
12090104 -- North Concho. Texas.
Area = 1510 sq.mi.
12090105 -- Concho. Texas.
Area = 1240 sq.mi.
12090106 -- Middle Colorado. Texas.
Area = 1980 sq.mi.
12090107 -- Pecan Bayou. Texas.
Area = 1410 sq.mi.
12090108 -- Jim Ned. Texas.
Area = 780 sq.mi.
12090109 -- San Saba. Texas.
Area = 2330 sq.mi.
12090110 -- Brady. Texas.
Area = 786 sq.mi.
Accounting Unit 120902 -- Middle Colorado-Llano: The Colorado River
Basin below the San Saba
River Basin to and including the
Onion Creek Basin. Texas.
Area = 8350 sq.mi.
Cataloging Units 12090201 -- Buchanan-Lyndon B. Johnson Lakes.
Texas.
Area = 1260 sq.mi.
12090202 -- North Llano. Texas.
Area = 942 sq.mi.
12090203 -- South Llano. Texas.
Area = 937 sq.mi.
12090204 -- Llano. Texas.
Area = 2650 sq.mi.
12090205 -- Austin-Travis Lakes. Texas.
Area = 1260 sq.mi.
12090206 -- Pedernales. Texas.
Area = 1300 sq.mi.
Accounting Unit 120903 -- Lower Colorado: The Colorado River Basin
below the Onion Creek
Basin to its point of discharge
into the Gulf of Mexico. Texas.
Area = 2930 sq.mi.
Cataloging Units 12090301 -- Lower Colorado-Cummins. Texas.
Area = 2220 sq.mi.
12090302 -- Lower Colorado. Texas.
Area = 706 sq.mi.
Accounting Unit 120904 -- San Bernard Coastal: The coastal drainage
and associated waters from the Brazos
River Basin boundary to the Colorado
River Basin boundary. Texas.
Area = 1920 sq.mi.
Cataloging Units 12090401 -- San Bernard. Texas.
Area = 1050 sq.mi.
12090402 -- East Matagorda Bay. Texas.
Area = 865 sq.mi.
Subregion 1210 -- Central Texas Coastal: The coastal drainage and
associated waters from the Colorado River Basin
boundary to Aransas Pass and the Corpus Christi
Bay drainage boundary. Texas.
Area = 18200 sq.mi.
Accounting Unit 121001 -- Lavaca: The Lavaca River Basin. Texas.
Area = 2340 sq.mi.
Cataloging Units 12100101 -- Lavaca. Texas.
Area = 903 sq.mi.
12100102 -- Navidad. Texas.
Area = 1440 sq.mi.
Accounting Unit 121002 -- Guadalupe: The Guadalupe River Basin,
excluding the San Antonio River Basin.
Texas.
Area = 6040 sq.mi.
Cataloging Units 12100201 -- Upper Guadalupe. Texas.
Area = 1450 sq.mi.
12100202 -- Middle Guadalupe. Texas.
Area = 2160 sq.mi.
12100203 -- San Marcos. Texas.
Area = 1370 sq.mi.
12100204 -- Lower Guadalupe. Texas.
Area = 1060 sq.mi.
Accounting Unit 121003 -- San Antonio: The San Antonio River Basin.
Texas.
Area = 4270 sq.mi.
Cataloging Units 12100301 -- Upper San Antonio. Texas.
Area = 524 sq.mi.
12100302 -- Medina. Texas.
Area = 1380 sq.mi.
12100303 -- Lower San Antonio. Texas.
Area = 1500 sq.mi.
12100304 -- Cibolo. Texas.
Area = 861 sq.mi.
Accounting Unit 121004 -- Central Texas Coastal: The coastal
drainage and associated waters from the
Colorado River Basin boundary to
Aransas Pass and the Corpus Christi Bay
drainage boundary, excluding the Guadalupe,
Lavaca, and San Antonio River Basins.
Texas.
Area = 5540 sq.mi.
Cataloging Units 12100401 -- Central Matagorda Bay. Texas.
Area = 1300 sq.mi.
12100402 -- West Matagorda Bay. Texas.
Area = 922 sq.mi.
12100403 -- East San Antonio Bay. Texas.
Area = 392 sq.mi.
12100404 -- West San Antonio Bay. Texas.
Area = 155 sq.mi.
12100405 -- Aransas Bay. Texas.
Area = 855 sq.mi.
12100406 -- Mission. Texas.
Area = 1050 sq.mi.
12100407 -- Aransas. Texas.
Area = 863 sq.mi.
Subregion 1211 -- Nueces-Southwestern Texas Coastal: The coastal
drainage and associated waters from Aransas Pass,
including the Corpus Christi Bay and Nueces River
drainages, to the Rio Grande Basin boundary.
Texas.
Area = 29000 sq.mi.
Accounting Unit 121101 -- Nueces: The Nueces River Basin. Texas.
Area = 17000 sq.mi.
Cataloging Units 12110101 -- Nueces headwaters. Texas.
Area = 813 sq.mi.
12110102 -- West Nueces. Texas.
Area = 911 sq.mi.
12110103 -- Upper Nueces. Texas.
Area = 1900 sq.mi.
12110104 -- Turkey. Texas.
Area = 1590 sq.mi.
12110105 -- Middle Nueces. Texas.
Area = 3400 sq.mi.
12110106 -- Upper Frio. Texas.
Area = 2390 sq.mi.
12110107 -- Hondo. Texas.
Area = 1100 sq.mi.
12110108 -- Lower Frio. Texas.
Area = 1250 sq.mi.
12110109 -- San Miguel. Texas.
Area = 869 sq.mi.
12110110 -- Atascosa. Texas.
Area = 1420 sq.mi.
12110111 -- Lower Nueces. Texas
Area = 1370
Accounting Unit 121102 -- Southwestern Texas Coastal: The coastal
drainage and associated waters from
Aransas Pass, including the Corpus Christi
Bay drainage, to the Rio Grande Basin
boundary, excluding the Nueces River
Basin. Texas.
Area = 12000 sq.mi.
Cataloging Units 12110201 -- North Corpus Christi Bay. Texas.
Area = 170 sq.mi.
12110202 -- South Corpus Christi Bay. Texas.
Area = 451 sq.mi.
12110203 -- North Laguna Madre. Texas.
Area = 229 sq.mi.
12110204 -- San Fernando. Texas.
Area = 1350 sq.mi.
12110205 -- Baffin Bay. Texas.
Area = 2150 sq.mi.
12110206 -- Palo Blanco. Texas.
Area = 1010 sq.mi.
12110207 -- Central Laguna Madre. Texas.
Area = 3650 sq.mi.
12110208 -- South Laguna Madre. Texas.
Area = 2960 sq.mi.
Region 13 Rio Grande Region -- The drainage within the United states of:
(a) the Rio Grande Basin, and (b) the San Luis Valley, North
Plains, Plains of San Agustin, Mimbres River, Estancia,
Jornada Del Muerto, Tularosa Valley, Salt Basin, and Other
Closed Basins. Includes parts of Colorado, New Mexico,
and Texas.
Subregion 1301 -- Rio Grande headwaters: The Rio Grande Basin from
its headwaters to the river's intersect with the
Colorado-New Mexico state line, including the San
Luis Valley closed basin. Colorado, New Mexico.
Area = 7580 sq.mi.
Accounting Unit 130100 -- Rio Grande headwaters. Colorado,
New Mexico.
Area = 7580 sq.mi.
Cataloging Units 13010001 -- Rio Grande headwaters. Colorado.
Area = 1320 sq.mi.
13010002 -- Alamosa-Trinchera. Colorado,
New Mexico.
Area = 2560 sq.mi.
13010003 -- San Luis. Colorado.
Area = 1590 sq.mi.
13010004 -- Saguache. Colorado.
Area = 1320 sq.mi.
13010005 -- Conejos. Colorado, New Mexico.
Area = 790 sq.mi.
Subregion 1302 -- Rio Grande-Elephant Butte: The Rio Grande Basin
from the Colorado-New Mexico state line to and
including Elephant Butte Reservoir, and including
the North Plains, Jornada Del Muerto, and Plains of
San Agustin closed basins. Colorado, New Mexico.
Area = 26900 sq.mi.
Accounting Unit 130201 -- Upper Rio Grande: The Rio Grande Basin
from the Colorado-New Mexico state line
to and including the Guaje Canyon drainage
Basin. Colorado, New Mexico.
Area = 6370 sq.mi.
Cataloging Units 13020101 -- Upper Rio Grande. Colorado,
New Mexico.
Area = 3220 sq.mi.
13020102 -- Rio Chama. Colorado, New Mexico.
Area = 3150 sq.mi.
Accounting Unit 130202 -- Rio Grande-Elephant Butte: The Rio Grande
Basin below the Guaje Canyon drainage basin
to and including Elephant Butte Reservoir,
and including the North Plains, Jornada
Del Muerto, and Plains of San Agustin
closed basins. New Mexico.
Area = 20500 sq.mi.
Cataloging Units 13020201 -- Rio Grande-Santa Fe. New Mexico.
Area = 1830 sq.mi.
13020202 -- Jemez. New Mexico.
Area = 1040 sq.mi.
13020203 -- Rio Grande-Albuquerque. New Mexico.
Area = 3200 sq.mi.
13020204 -- Rio Puerco. New Mexico.
Area = 2090 sq.mi.
13020205 -- Arroyo Chico. New Mexico.
Area = 1360 sq.mi.
13020206 -- North Plains. New Mexico.
Area = 1130 sq.mi.
13020207 -- Rio San Jose. New Mexico.
Area = 2620 sq.mi.
13020208 -- Plains of San Agustin.
New Mexico.
Area = 1970 sq.mi.
13020209 -- Rio Salado. New Mexico.
Area = 1390 sq.mi.
13020210 -- Jornada Del Muerto. New Mexico.
Area = 1800 sq.mi.
13020211 -- Elephant Butte Reservoir.
New Mexico.
Area = 2110 sq.mi.
Subregion 1303 -- Rio Grande-Mimbres: The drainage within the
United states of the Rio Grande Basin from Elephant
Butte Reservoir to the junction of the Mexico,
New Mexico, and Texas international boundary, and
including the Jornada Draw, Mimbres River, and
Other closed basins west of the Rio Grande.
New Mexico, Texas.
Area = 11100 sq.mi.
Accounting Unit 130301 -- Rio Grande-Caballo: The drainage within
the United states of the Rio Grande Basin
from Elephant Butte Reservoir to the
junction of the Mexico, New Mexico, and
Texas international boundary, and
including the Jornada Draw closed basin.
New Mexico, Texas.
Area = 4890 sq.mi.
Cataloging Units 13030101 -- Caballo. New Mexico.
Area = 1230 sq.mi.
13030102 -- El Paso-Las Cruces. New Mexico,
Texas.
Area = 2400 sq.mi.
13030103 -- Jornada Draw. New Mexico.
Area = 1260 sq.mi.
Accounting Unit 130302 -- Mimbres: The drainage within the
United states of the Mimbres River and
Other closed basins west of the Rio Grande.
New Mexico.
Area = 6250 sq.mi.
Cataloging Units 13030201 -- Playas Lake. New Mexico.
Area = 1690 sq.mi.
13030202 -- Mimbres. New Mexico.
Area = 4560 sq.mi.
Subregion 1304 -- Rio Grande-Amistad: The drainage within the
United states of the Rio Grande Basin from the
Junction of the Mexico, New Mexico, and Texas
international boundary to and including Amistad
Reservoir, but excluding the Pecos River Basin.
Texas.
Area = 18700 sq.mi.
Accounting Unit 130401 -- Rio Grande-Fort Quitman: The drainage
within the United states of the Rio Grande
Basin from the Junction of the Mexico,
New Mexico, and Texas international
boundary to the compact point near Fort
Quitman. Texas.
Area = 1780 sq.mi.
Cataloging Unit 13040100 -- Rio Grande-Fort Quitman. Texas.
Area = 1780 sq.mi.
Accounting Unit 130402 -- Rio Grande-Amistad: The drainage
within the United states of the Rio Grande
Basin from the compact point near Fort
Quitman to and including Amistad Reservoir,
but excluding the Pecos and Devils River
Basins. Texas.
Area = 12700 sq.mi.
Cataloging Units 13040201 -- Cibolo-Red Light. Texas.
Area = 2170 sq.mi.
13040202 -- Alamito. Texas.
Area = 1570 sq.mi.
13040203 -- Black Hills-Fresno. Texas.
Area = 617 sq.mi.
13040204 -- Terlingua. Texas.
Area = 1290 sq.mi.
13040205 -- Big Bend. Texas.
Area = 1100 sq.mi.
13040206 -- Maravillas. Texas.
Area = 1320 sq.mi.
13040207 -- Santiago Draw. Texas.
Area = 686 sq.mi.
13040208 -- Reagan-Sanderson. Texas.
Area = 724 sq.mi.
13040209 -- San Francisco. Texas.
Area = 1020 sq.mi.
13040210 -- Lozier Canyon. Texas.
Area = 926 sq.mi.
13040211 -- Big Canyon. Texas.
Area = 823 sq.mi.
13040212 -- Amistad Reservoir. Texas.
Area = 410 sq.mi.
Accounting Unit 130403 -- Devils: The Devils River Basin. Texas.
Area = 4270 sq.mi.
Cataloging Units 13040301 -- Upper Devils. Texas.
Area = 2650 sq.mi.
13040302 -- Lower Devils. Texas.
Area = 893 sq.mi.
13040303 -- Dry Devils. Texas.
Area = 729 sq.mi.
Subregion 1305 -- Rio Grande closed basins: The Estancia, Tularosa
Valley, Salt Basin and other closed basins lying
between the Rio Grande and the Pecos River
Basins. New Mexico, Texas.
Area = 17500 sq.mi.
Accounting Unit 130500 -- Rio Grande closed basins. New Mexico,
Texas.
Area = 17500 sq.mi.
Cataloging Units 13050001 -- Western Estancia. New Mexico.
Area = 2400 sq.mi.
13050002 -- Eastern Estancia. New Mexico.
Area = 517 sq.mi.
13050003 -- Tularosa Valley. New Mexico, Texas.
Area = 6720 sq.mi.
13050004 -- Salt Basin. New Mexico, Texas.
Area = 7900 sq.mi.
Subregion 1306 -- Upper Pecos: The Pecos River Basin to but
excluding the Delaware River Basin.
New Mexico, Texas.
Area = 23500 sq.mi.
Accounting Unit 130600 -- Upper Pecos. New Mexico, Texas.
Area = 23500 sq.mi.
Cataloging Units 13060001 -- Pecos headwaters. New Mexico.
Area = 3610 sq.mi.
13060002 -- Pintada Arroyo. New Mexico.
Area = 884 sq.mi.
13060003 -- Upper Pecos. New Mexico.
Area = 4870 sq.mi.
13060004 -- Taiban. New Mexico.
Area = 725 sq.mi.
13060005 -- Arroyo Del Macho. New Mexico.
Area = 1870 sq.mi.
13060006 -- Gallo Arroyo. New Mexico.
Area = 745 sq.mi.
13060007 -- Upper Pecos-Long Arroyo. New Mexico.
Area = 2700 sq.mi.
13060008 -- Rio Hondo. New Mexico.
Area = 1680 sq.mi.
13060009 -- Rio Felix. New Mexico.
Area = 994 sq.mi.
13060010 -- Rio Penasco. New Mexico.
Area = 1080 sq.mi.
13060011 -- Upper Pecos-Black. New Mexico,
Texas.
Area = 4360 sq.mi.
Subregion 1307 -- Lower Pecos: The Pecos River Basin from and
including the Delaware River Basin to the
confluence with the Rio Grande. New Mexico,
Texas.
Area = 20800 sq.mi.
Accounting Unit 130700 -- Lower Pecos. New Mexico, Texas.
Area = 20800 sq.mi.
Cataloging Units 13070001 -- Lower Pecos-Red Bluff Reservoir.
New Mexico, Texas.
Area = 4430 sq.mi.
13070002 -- Delaware. New Mexico, Texas.
Area = 772 sq.mi.
13070003 -- Toyah. Texas.
Area = 1030 sq.mi.
13070004 -- Salt Draw. Texas.
Area = 2040 sq.mi.
13070005 -- Barrilla Draw. Texas.
Area = 850 sq.mi.
13070006 -- Coyanosa-Hackberry Draws. Texas.
Area = 1500 sq.mi.
13070007 -- Landreth-Monument Draws. New Mexico,
Texas.
Area = 4270 sq.mi.
13070008 -- Lower Pecos. Texas.
Area = 2970 sq.mi.
13070009 -- Tunas. Texas.
Area = 1010 sq.mi.
13070010 -- Independence. Texas.
Area = 765 sq.mi.
13070011 -- Howard Draw. Texas.
Area = 1120 sq.mi.
Subregion 1308 -- Rio Grande-Falcon: The drainage within
the United states of the Rio Grande Basin from
Amistad Reservoir to and including Falcon
Reservoir. Texas.
Area = 5170 sq.mi.
Accounting Unit 130800 -- Rio Grande-Falcon. Texas.
Area = 5170 sq.mi.
Cataloging Units 13080001 -- Elm-Sycamore. Texas.
Area = 1580 sq.mi.
13080002 -- San Ambrosia-Santa Isabel. Texas.
Area = 1760 sq.mi.
13080003 -- International Falcon Reservoir.
Texas.
Area = 1830 sq.mi.
Subregion 1309 -- Lower Rio Grande: The drainage within the
United states of the Rio Grande Basin from Falcon
Reservoir to the Gulf of Mexico. Texas.
Area = 1260 sq.mi.
Accounting Unit 130900 -- Lower Rio Grande. Texas.
Area = 1260 sq.mi.
Cataloging Units 13090001 -- Los Olmos. Texas.
Area = 1170 sq.mi.
13090002 -- Lower Rio Grande. Texas.
Area = 93 sq.mi.
Region 14 Upper Colorado Region -- The drainage of: (a) the Colorado
River Basin above the Lee Ferry compact point which is
one mile below the mouth of the Paria River; and (b) the
Great Divide closed basin. Includes parts of Arizona,
Colorado, New Mexico, Utah, and Wyoming.
Subregion 1401 -- Colorado headwaters: The Colorado River Basin to
but excluding the Bitter Creek Basin, and
excluding the Gunnison River Basin. Colorado, Utah.
Area = 9730 sq.mi.
Accounting Unit 140100 -- Colorado headwaters: Colorado, Utah.
Area = 9730 sq.mi.
Cataloging Units 14010001 -- Colorado headwaters. Colorado.
Area = 2860 sq.mi.
14010002 -- Blue. Colorado.
Area = 675 sq.mi.
14010003 -- Eagle. Colorado.
Area = 963 sq.mi.
14010004 -- Roaring Fork. Colorado.
Area = 1440 sq.mi.
14010005 -- Colorado headwaters-Plateau.
Utah.
Area = 3090 sq.mi.
14010006 -- Parachute-Roan. Colorado.
Area = 698 sq.mi.
Subregion 1402 -- Gunnison: The Gunnison River Basin. Colorado.
Area = 7930 sq.mi.
Accounting Unit 140200 -- Gunnison. Colorado.
Area = 7930 sq.mi.
Cataloging Units 14020001 -- East-Taylor. Colorado.
Area = 760 sq.mi.
14020002 -- Upper Gunnison. Colorado.
Area = 2380 sq.mi.
14020003 -- Tomichi. Colorado.
Area = 1090 sq.mi.
14020004 -- North Fork Gunnison. Colorado.
Area = 959 sq.mi.
14020005 -- Lower Gunnison. Colorado.
Area = 1630 sq.mi.
14020006 -- Uncompahange. Colorado.
Area = 1110 sq.mi.
Subregion 1403 -- Upper Colorado-Dolores: The Colorado River Basin
from and including the Bitter Creek Basin
to the confluence with the Green River Basin.
Colorado, Utah.
Area = 8250 sq.mi.
Accounting Unit 140300 -- Upper Colorado-Dolores. Colorado, Utah.
Area = 8250 sq.mi.
Cataloging Units 14030001 -- Westwater Canyon. Colorado, Utah.
Area = 1440 sq.mi.
14030002 -- Upper Dolores. Colorado, Utah.
Area = 2140 sq.mi.
14030003 -- San Miguel. Colorado.
Area = 1530 sq.mi.
14030004 -- Lower Dolores. Colorado, Utah.
Area = 904 sq.mi.
14030005 -- Upper Colorado-Kane Springs.
Colorado, Utah.
Area = 2240 sq.mi.
Subregion 1404 -- Great Divide - Upper Green: The Green River Basin
above the confluence with the Yampa River Basin; and
the Great Divide closed basin. Utah, Wyoming.
Area = 20600 sq.mi.
Accounting Unit 140401 -- Upper Green: The Green River Basin above
the confluence with the Yampa River Basin. Utah,
Wyoming.
Area = 16700 sq.mi.
Cataloging Units 14040101 -- Upper Green. Wyoming.
Area = 2930 sq.mi.
14040102 -- New Fork. Wyoming.
Area = 1220 sq.mi.
14040103 -- Upper Green-Slate. Wyoming.
Area = 1480 sq.mi.
14040104 -- Big Sandy. Wyoming.
Area = 1810 sq.mi.
14040105 -- Bitter. Wyoming.
Area = 2200 sq.mi.
14040106 -- Upper Green-Flaming Gorge Reservoir.
Colorado. Utah, Wyoming.
Area = 2460 sq.mi.
14040107 -- Blacks Fork. Utah, Wyoming.
Area = 2700 sq.mi.
14040108 -- Muddy. Utah, Wyoming.
Area = 968 sq.mi.
14040109 -- Vermilion. Colorado, Wyoming.
Area = 961 sq.mi.
Accounting Unit 140402 -- Great Divide closed basin: The
Great Divide closed basin. Wyoming.
Area = 3870 sq.mi.
Cataloging Unit 14040200 -- Great Divide closed basin. Wyoming.
Area = 3870 sq.mi.
Subregion 1405 -- White-Yampa: The White and Yampa River Basins.
Colorado, Utah, Wyoming.
Area = 13100 sq.mi.
Accounting Unit 140500 -- White - Yampa. Colorado, Utah, Wyoming.
Area = 13100 sq.mi.
Cataloging Units 14050001 -- Upper Yampa. Colorado.
Area = 2590 sq.mi.
14050002 -- Lower Yampa. Colorado.
Area = 1550 sq.mi.
14050003 -- Little Snake. Colorado, Wyoming.
Area = 3060 sq.mi.
14050004 -- Muddy. Wyoming.
Area = 1010 sq.mi.
14050005 -- Upper White. Colorado.
Area = 1360 sq.mi.
14050006 -- Piceance-Yellow. Colorado.
Area = 904 sq.mi.
14050007 -- Lower White. Colorado, Utah.
Area = 2670 sq.mi.
Subregion 1406 -- Lower Green: The Green River Basin below the
confluence with the Yampa River Basin, but excluding
the Yampa and White River Basins. Colorado, Utah.
Area = 14400 sq.mi.
Accounting Unit 140600 -- Lower Green. Colorado, Utah.
Area = 14400 sq.mi.
Cataloging Units 14060001 -- Lower Green-Diamond. Colorado, Utah.
Area = 961 sq.mi.
14060002 -- Ashley-Brush. Utah.
Area = 637 sq.mi.
14060003 -- Duchesne. Utah.
Area = 2640 sq.mi.
14060004 -- Strawberry. Utah.
Area = 1150 sq.mi.
14060005 -- Lower Green-Desolation Canyon. Utah.
Area = 1910 sq.mi.
14060006 -- Willow. Utah.
Area = 957 sq.mi.
14060007 -- Price. Utah.
Area = 1870 sq.mi.
14060008 -- Lower Green. Utah.
Area = 1840 sq.mi.
14060009 -- San Rafael. Utah.
Area = 2390 sq.mi.
Subregion 1407 -- Upper Colorado-Dirty Devil: The Colorado River
Basin below the confluence with the Green River
Basin to the Lee Ferry compact point, but excluding
the San Juan River Basin. Arizona, Utah.
Area = 13500 sq.mi.
Accounting Unit 140700 -- Upper Colorado-Dirty Devil. Arizona, Utah.
Area = 13500 sq.mi.
Cataloging Units 14070001 -- Upper Lake Powell. Utah.
Area = 2820 sq.mi.
14070002 -- Muddy. Utah.
Area = 1530 sq.mi.
14070003 -- Fremont. Utah.
Area = 1940 sq.mi.
14070004 -- Dirty Devil. Utah.
Area = 839 sq.mi.
14070005 -- Escalante. Utah.
Area = 2000 sq.mi.
14070006 -- Lower Lake Powell. Arizona, Utah.
Area = 2930 sq.mi.
14070007 -- Paria. Arizona, Utah.
Area = 1420 sq.mi.
Subregion 1408 -- San Juan: The San Juan River Basin. Arizona,
Colorado, New Mexico, Utah.
Area = 24600 sq.mi.
Accounting Unit 140801 -- Upper San Juan: The San Juan River Basin to
and including the Mancos River Basin.
Arizona, Colorado, New Mexico.
Area = 14400 sq.mi.
Cataloging Units 14080101 -- Upper San Juan. Colorado,
New Mexico.
Area = 3430 sq.mi.
14080102 -- Piedra. Colorado.
Area = 662 sq.mi.
14080103 -- Blanco Canyon. New Mexico.
Area = 1690 sq.mi.
14080104 -- Animas. Colorado, New Mexico.
Area = 1370 sq.mi.
14080105 -- Middle San Juan. Arizona, Colorado,
New Mexico.
Area = 1920 sq.mi.
14080106 -- Chaco. Arizona, New Mexico.
Area = 4510 sq.mi.
14080107 -- Mancos. Colorado, New Mexico.
Area = 795 sq.mi.
Accounting Unit 140802 -- Lower San Juan: The San Juan River Basin
below the Mancos River Basin to
the confluence with the Colorado River.
Arizona, Colorado, New Mexico, Utah.
Area = 10300 sq.mi.
Cataloging Units 14080201 -- Lower San Juan-Four Corners.
Arizona, Colorado, New Mexico, Utah.
Area = 2000 sq.mi.
14080202 -- Mcelmo. Colorado, Utah.
Area = 702 sq.mi.
14080203 -- Montezuma. Colorado, Utah.
Area = 1160 sq.mi.
14080204 -- Chinle. Arizona, New Mexico, Utah.
Area = 4090 sq.mi.
14080205 -- Lower San Juan. Arizona, Utah.
Area = 2320 sq.mi.
Region 15 Lower Colorado Region -- The drainage within the United States
of: (a) the Colorado River Basin below the Lee Ferry compact
point which is one mile below the mouth of the Paria River;
(b) streams that originate within the United States and
ultimately discharge into the Gulf of California; and
(c) the Animas Valley, Willcox Playa, and other smaller closed
basins. Includes parts of Arizona, California,
Nevada, New Mexico, and Utah.
Subregion 1501 -- Lower Colorado-Lake Mead: The Colorado River Basin
from the Lee Ferry compact point to Hoover Dam,
but excluding the Little Colorado River Basin.
Arizona, Nevada, Utah.
Area = 29900 sq.mi.
Accounting Unit 150100 -- Lower Colorado-Lake Mead: Arizona,
Nevada, Utah.
Area = 29900 sq.mi.
Cataloging Units 15010001 -- Lower Colorado-Marble Canyon.
Arizona.
Area = 1430 sq.mi.
15010002 -- Grand Canyon. Arizona.
Area = 2530 sq.mi.
15010003 -- Kanab. Arizona, Utah.
Area = 2350 sq.mi.
15010004 -- Havasu Canyon. Arizona.
Area = 2920 sq.mi.
15010005 -- Lake Mead. Arizona, Nevada.
Area = 2710 sq.mi.
15010006 -- Grand Wash. Arizona, Nevada.
Area = 922 sq.mi.
15010007 -- Hualapai Wash. Arizona.
Area = 1540 sq.mi.
15010008 -- Upper Virgin. Utah.
Area = 2130 sq.mi.
15010009 -- Fort Pierce Wash. Arizona, Utah.
Area = 1690 sq.mi.
15010010 -- Lower Virgin. Arizona, Nevada, Utah.
Area = 2070 sq.mi.
15010011 -- White. Nevada.
Area = 2840 sq.mi.
15010012 -- Muddy. Nevada.
Area = 1750 sq.mi.
15010013 -- Meadow Valley Wash. Nevada, Utah.
Area = 2540 sq.mi.
15010014 -- Detrital Wash. Arizona.
Area = 650 sq.mi.
15010015 -- Las Vegas Wash. Nevada.
Area = 1860 sq.mi.
Subregion 1502 -- Little Colorado: The Little Colorado River Basin.
Arizona, New Mexico.
Area = 26900 sq.mi.
Accounting Unit 150200 -- Little Colorado. Arizona, New Mexico.
Area = 26900 sq.mi.
Cataloging Units 15020001 -- Little Colorado headwaters. Arizona,
New Mexico.
Area = 783 sq.mi.
15020002 -- Upper Little Colorado. Arizona,
New Mexico.
Area = 1590 sq.mi.
15020003 -- Carrizo Wash. Arizona, New Mexico.
Area = 2210 sq.mi.
15020004 -- Zuni. Arizona, New Mexico.
Area = 2730 sq.mi.
15020005 -- Silver. Arizona.
Area = 934 sq.mi.
15020006 -- Upper Puerco. Arizona, New Mexico.
Area = 1890 sq.mi.
15020007 -- Lower Puerco. Arizona.
Area = 1100 sq.mi.
15020008 -- Middle Little Colorado. Arizona.
Area = 2450 sq.mi.
15020009 -- Leroux Wash. Arizona.
Area = 801 sq.mi.
15020010 -- Chevelon Canyon. Arizona.
Area = 839 sq.mi.
15020011 -- Cottonwood Wash. Arizona.
Area = 1610 sq.mi.
15020012 -- Corn-Oraibi. Arizona.
Area = 864 sq.mi.
15020013 -- Polacca Wash. Arizona.
Area = 1070 sq.mi.
15020014 -- Jadito Wash. Arizona.
Area = 1050 sq.mi.
15020015 -- Canyon Diablo. Arizona.
Area = 1200 sq.mi.
15020016 -- Lower Little Colorado. Arizona.
Area = 2390 sq.mi.
15020017 -- Dinnebito Wash. Arizona.
Area = 737 sq.mi.
15020018 -- Moenkopi Wash. Arizona.
Area = 2640 sq.mi.
Subregion 1503 -- Lower Colorado: The Colorado River Basin within
the United States below Hoover Dam, excluding the
Gila River Basin. Arizona, California, Nevada.
Area = 17000 sq.mi.
Accounting Unit 150301 -- Lower Colorado: The Colorado River Basin
within the United States below Hoover Dam,
excluding the Gila and Bill Williams
River Basins. Arizona, California,
Nevada.
Area = 11600 sq.mi.
Cataloging Units 15030101 -- Havasu-Mohave Lakes. Arizona,
California, Nevada.
Area = 2740 sq.mi.
15030102 -- Piute Wash. California, Nevada.
Area = 1030 sq.mi.
15030103 -- Sacramento Wash. Arizona.
Area = 1290 sq.mi.
15030104 -- Imperial Reservoir. Arizona,
California.
Area = 3320 sq.mi.
15030105 -- Bouse Wash. Arizona.
Area = 1630 sq.mi.
15030106 -- Tyson Wash. Arizona.
Area = 717 sq.mi.
15030107 -- Lower Colorado. Arizona, California.
Area = 267 sq.mi.
15030108 -- Yuma Desert. Arizona.
Area = 626 sq.mi.
Accounting Unit 150302 -- Bill Williams: The Bill Williams River
Basin. Arizona.
Area = 5370 sq.mi.
Cataloging Units 15030201 -- Big Sandy. Arizona.
Area = 2120 sq.mi.
15030202 -- Burro. Arizona.
Area = 708 sq.mi.
15030203 -- Santa Maria. Arizona.
Area = 1440 sq.mi.
15030204 -- Bill Williams. Arizona.
Area = 1100 sq.mi.
Subregion 1504 -- Upper Gila: The Gila River Basin above Coolidge
Dam, including the Animas Valley closed basin.
Arizona, New Mexico.
Area = 15100 sq.mi.
Accounting Unit 150400 -- Upper Gila. Arizona, New Mexico.
Area = 15100 sq.mi.
Cataloging Units 15040001 -- Upper Gila. New Mexico.
Area = 2000 sq.mi.
15040002 -- Upper Gila-Mangas. Arizona,
New Mexico.
Area = 2030 sq.mi.
15040003 -- Animas Valley. Arizona, New Mexico.
Area = 2250 sq.mi.
15040004 -- San Francisco. Arizona, New Mexico.
Area = 2740 sq.mi.
15040005 -- Upper Gila-San Carlos Reservoir.
Arizona.
Area = 2820 sq.mi.
15040006 -- San Simon. Arizona, New Mexico.
Area = 2230 sq.mi.
15040007 -- San Carlos. Arizona.
Area = 1070 sq.mi.
Subregion 1505 -- Middle Gila: The Gila River Basin within
the United States from Coolidge Dam to the
confluence with the Salt River Basin, including
the Willcox closed basin. Arizona.
Area = 16900 sq.mi.
Accounting Unit 150501 -- Middle Gila: The Gila River Basin
from Coolidge Dam to the confluence
with the Salt River Basin, excluding the
Santa Cruz and San Pedro River Basins and
the Willcox closed basin. Arizona.
Area = 3310 sq.mi.
Cataloging Unit 15050100 -- Middle Gila. Arizona.
Area = 3310 sq.mi.
Accounting Unit 150502 -- San Pedro-Willcox: The San Pedro River
Basin within the United States and the
Willcox closed basin. Arizona.
Area = 5440 sq.mi.
Cataloging Units 15050201 -- Willcox Playa. Arizona.
Area = 1680 sq.mi.
15050202 -- Upper San Pedro. Arizona.
Area = 1780 sq.mi.
15050203 -- Lower San Pedro. Arizona.
Area = 1980 sq.mi.
Accounting Unit 150503 -- Santa Cruz: The Santa Cruz River Basin
within the United States. Arizona.
Area = 8190 sq.mi.
Cataloging Units 15050301 -- Upper Santa Cruz. Arizona.
Area = 2210 sq.mi.
15050302 -- Rillito. Arizona.
Area = 928 sq.mi.
15050303 -- Lower Santa Cruz. Arizona.
Area = 1580 sq.mi.
15050304 -- Brawley Wash. Arizona.
Area = 1390 sq.mi.
15050305 -- Aguirre Valley. Arizona.
Area = 790 sq.mi.
15050306 -- Santa Rosa Wash. Arizona.
Area = 1290 sq.mi.
Subregion 1506 -- Salt: The Salt River Basin. Arizona.
Area = 13700 sq.mi.
Accounting Unit 150601 -- Salt: The Salt River Basin, excluding the
Verde River Basin. Arizona.
Area = 7120 sq.mi.
Cataloging Units 15060101 -- Black. Arizona.
Area = 1240 sq.mi.
15060102 -- White. Arizona.
Area = 656 sq.mi.
15060103 -- Upper Salt. Arizona.
Area = 2160 sq.mi.
15060104 -- Carrizo. Arizona.
Area = 695 sq.mi.
15060105 -- Tonto. Arizona.
Area = 1030 sq.mi.
15060106 -- Lower Salt. Arizona.
Area = 1340 sq.mi.
Accounting Unit 150602 -- Verde: The Verde River Basin. Arizona.
Area = 6590 sq.mi.
Cataloging Units 15060201 -- Big Chino-Williamson Valley.
Arizona.
Area = 2170 sq.mi.
15060202 -- Upper Verde. Arizona.
Area = 2480 sq.mi.
15060203 -- Lower Verde. Arizona.
Area = 1940 sq.mi.
Subregion 1507 -- Lower Gila: The Gila River Basin below the
confluence with the Salt River Basin to the
confluence with the Colorado River. Arizona.
Area = 14800 sq.mi.
Accounting Unit 150701 -- Lower Gila-Agua Fria: The Gila River Basin
below the confluence with the Salt River
Basin to Painted Rock Dam. Arizona.
Area = 7860 sq.mi.
Cataloging Units 15070101 -- Lower Gila-Painted Rock Reservoir.
Arizona.
Area = 2090 sq.mi.
15070102 -- Agua Fria. Arizona.
Area = 2420 sq.mi.
15070103 -- Hassayampa. Arizona.
Area = 1410 sq.mi.
15070104 -- Centennial Wash. Arizona.
Area = 1940 sq.mi.
Accounting Unit 150702 -- Lower Gila: The Gila River Basin
below Painted Rock Dam. Arizona.
Area = 6960 sq.mi.
Cataloging Units 15070201 -- Lower Gila. Arizona.
Area = 4170 sq.mi.
15070202 -- Tenmile Wash. Arizona.
Area = 1220 sq.mi.
15070203 -- San Cristobal Wash. Arizona.
Area = 1570 sq.mi.
Subregion 1508 -- Sonora: The drainage that originates within the
United States east of the Colorado River Basin and
ultimately discharges into the Gulf of California.
Arizona, New Mexico.
Area = 4830 sq.mi.
Accounting Unit 150801 -- Rio Sonoyta: The drainage within the
United states of the Rio Sonoyta Basin.
Arizona.
Area = 2960 sq.mi.
Cataloging Units 15080101 -- San Simon Wash. Arizona.
Area = 2130 sq.mi.
15080102 -- Rio Sonoyta. Arizona.
Area = 420 sq.mi.
15080103 -- Tule Desert. Arizona.
Area = 412 sq.mi.
Accounting Unit 150802 -- Rio De La Concepcion: The drainage within
the United states of the Rio De La
Concepcion Basin. Arizona.
Area = 125 sq.mi.
Cataloging Unit 15080200 -- Rio De La Concepcion. Arizona.
Area = 125 sq.mi.
Accounting Unit 150803 -- Rio De Bavispe: The drainage within the
United states of the Rio De Bavispe
Basin. Arizona, New Mexico.
Area = 1740 sq.mi.
Cataloging Units 15080301 -- Whitewater Draw. Arizona.
Area = 1180 sq.mi.
15080302 -- San Bernardino Valley. Arizona,
New Mexico.
Area = 416 sq.mi.
15080303 -- Cloverdale. New Mexico.
Area = 145 sq.mi.
Region 16 Great Basin Region -- The drainage of the Great Basin that
discharges into the states of Utah and Nevada. Includes Parts
of California, Idaho, Nevada, Oregon, Utah, and Wyoming.
Subregion 1601 -- Bear: The Bear River Basin. Idaho, Utah, Wyoming.
Area = 7310 sq.mi.
Accounting Unit 160101 -- Upper Bear: The Bear River Basin above
Stewart Dam. Idaho, Utah, Wyoming.
Area = 2800 sq.mi.
Cataloging Units 16010101 -- Upper Bear. Utah, Wyoming.
Area = 1970 sq.mi.
16010102 -- Central Bear. Idaho, Utah, Wyoming.
Area = 834 sq.mi.
Accounting Unit 160102 -- Lower Bear: The Bear River Basin below
Stewart Dam. Idaho, Utah.
Area = 4510 sq.mi.
Cataloging Units 16010201 -- Bear Lake. Idaho, Utah.
Area = 1220 sq.mi.
16010202 -- Middle Bear. Idaho, Utah.
Area = 1210 sq.mi.
16010203 -- Little Bear-Logan. Idaho, Utah.
Area = 928 sq.mi.
16010204 -- Lower Bear-Malad. Idaho, Utah.
Area = 1150 sq.mi.
Subregion 1602 -- Great Salt Lake: The Great Salt Lake Basin
excluding the Bear River Basin. Idaho, Nevada,
Utah, Wyoming.
Area = 28700 sq.mi.
Accounting Unit 160201 -- Weber: The Weber River Basin. Utah,
Wyoming.
Area = 2430 sq.mi.
Cataloging Units 16020101 -- Upper Weber. Utah, Wyoming.
Area = 1170 sq.mi.
16020102 -- Lower Weber. Utah.
Area = 1260 sq.mi.
Accounting Unit 160202 -- Jordan: The Jordan River Basin. Utah.
Area = 3830 sq.mi.
Cataloging Units 16020201 -- Utah Lake. Utah.
Area = 1340 sq.mi.
16020202 -- Spanish Fork. Utah.
Area = 993 sq.mi.
16020203 -- Provo. Utah.
Area = 710 sq.mi.
16020204 -- Jordan. Utah.
Area = 791 sq.mi.
Accounting Unit 160203 -- Great Salt Lake: The Great Salt Lake
Basin, excluding the Bear, Weber, and
Jordan River Basins. Idaho, Nevada,
Utah.
Area = 22400 sq.mi.
Cataloging Units 16020301 -- Hamlin-Snake Valleys. Nevada, Utah.
Area = 3100 sq.mi.
16020302 -- Pine Valley. Utah.
Area = 732 sq.mi.
16020303 -- Tule Valley. Utah.
Area = 928 sq.mi.
16020304 -- Rush-Tooele Valleys. Utah.
Area = 1180 sq.mi.
16020305 -- Skull Valley. Utah.
Area = 798 sq.mi.
16020306 -- Southern Great Salt Lake Desert.
Nevada, Utah.
Area = 5420 sq.mi.
16020307 -- Pilot-Thousand Springs, Nevada,
Utah.
Area = 1780 sq.mi.
16020308 -- Northern Great Salt Lake Desert.
Nevada, Utah.
Area = 4650 sq.mi.
16020309 -- Curlew Valley. Idaho, Utah.
Area = 1930 sq.mi.
16020310 -- Great Salt Lake. Utah.
Area = 1880 sq.mi.
Subregion 1603 -- Escalante Desert-Sevier Lake: The Escalante Desert
and the Sevier Lake closed basins. Nevada, Utah.
Area = 16200 sq.mi.
Accounting Unit 160300 -- Escalante Desert-Sevier Lake: Nevada,
Utah.
Area = 16200 sq.mi.
Cataloging Units 16030001 -- Upper Sevier. Utah.
Area = 1180 sq.mi.
16030002 -- East Fork Sevier. Utah.
Area = 1250 sq.mi.
16030003 -- Middle Sevier. Utah.
Area = 1850 sq.mi.
16030004 -- San Pitch. Utah.
Area = 858 sq.mi.
16030005 -- Lower Sevier. Utah.
Area = 3970 sq.mi.
16030006 -- Escalante Desert. Nevada,
Utah.
Area = 3270 sq.mi.
16030007 -- Beaver Bottoms-Upper Beaver. Utah.
Area = 1720 sq.mi.
16030008 -- Lower Beaver. Utah.
Area = 746 sq.mi.
16030009 -- Sevier Lake. Utah.
Area = 1330 sq.mi.
Subregion 1604 -- Black Rock Desert-Humboldt: The Humboldt River
Basin, the Black Rock Desert, and other closed
basins that discharge into
Northwestern Nevada. California, Nevada, Oregon.
Area = 28300 sq.mi.
Accounting Unit 160401 -- Humboldt: The Humboldt River Basin.
Nevada.
Area = 16700 sq.mi.
Cataloging Units 16040101 -- Upper Humboldt. Nevada.
Area = 2720 sq.mi.
16040102 -- North Fork Humboldt. Nevada.
Area = 988 sq.mi.
16040103 -- South Fork Humboldt. Nevada.
Area = 1270 sq.mi.
16040104 -- Pine. Nevada.
Area = 985 sq.mi.
16040105 -- Middle Humboldt. Nevada.
Area = 3180 sq.mi.
16040106 -- Rock. Nevada.
Area = 888 sq.mi.
16040107 -- Reese. Nevada.
Area = 2310 sq.mi.
16040108 -- Lower Humboldt. Nevada.
Area = 2590 sq.mi.
16040109 -- Little Humboldt. Nevada.
Area = 1740 sq.mi.
Accounting Unit 160402 -- Black Rock Desert: The Black Rock Desert
and other closed basins that
discharge into Northwestern Nevada.
California, Nevada, Oregon.
Area = 11600 sq.mi.
Cataloging Units 16040201 -- Upper Quinn. Nevada, Oregon.
Area = 3480 sq.mi.
16040202 -- Lower Quinn. Nevada.
Area = 3230 sq.mi.
16040203 -- Smoke Creek Desert. California,
Nevada.
Area = 2430 sq.mi.
16040204 -- Massacre Lake. California, Nevada,
Area = 1300 sq.mi.
16040205 -- Thousand-Virgin. Nevada, Oregon.
Area = 1150 sq.mi.
Subregion 1605 -- Central Lahontan: The Central Lahontan Basin
Consisting of the Carson, Truckee, and Walker River
Basins. California, Nevada.
Area = 12500 sq.mi.
Accounting Unit 160501 -- Truckee: The Truckee River Basin.
California, Nevada.
Area = 4710 sq.mi.
Cataloging Units 16050101 -- Lake Tahoe. California, Nevada.
Area = 505 sq.mi.
16050102 -- Truckee. California, Nevada.
Area = 1190 sq.mi.
16050103 -- Pyramid-Winnemucca Lakes. Nevada.
Area = 1370 sq.mi.
16050104 -- Granite Springs Valley. Nevada.
Area = 1640 sq.mi.
Accounting Unit 160502 -- Carson: The Carson River Basin.
California, Nevada.
Area = 3930 sq.mi.
Cataloging Units 16050201 -- Upper Carson. California, Nevada.
Area = 934 sq.mi.
16050202 -- Middle Carson. Nevada.
Area = 843 sq.mi.
16050203 -- Carson Desert. Nevada.
Area = 2150 sq.mi.
Accounting Unit 160503 -- Walker: The Walker River Basin.
California, Nevada.
Area = 3920 sq.mi.
Cataloging Units 16050301 -- East Walker. California, Nevada.
Area = 1080 sq.mi.
16050302 -- West Walker. California, Nevada.
Area = 992 sq.mi.
16050303 -- Walker. Nevada.
Area = 1010 sq.mi.
16050304 -- Walker Lake. Nevada.
Area = 835 sq.mi.
Subregion 1606 -- Central Nevada Desert Basins: The Closed Desert
Basins that discharge into South Central Nevada.
California, Nevada.
Area = 47100 sq.mi.
Accounting Unit 160600 -- Central Nevada Desert Basins: California,
Nevada.
Area = 47100 sq.mi.
Cataloging Units 16060001 -- Dixie Valley. Nevada.
Area = 3990 sq.mi.
16060002 -- Gabbs Valley. Nevada.
Area = 2060 sq.mi.
16060003 -- Southern Big Smoky Valley. Nevada.
Area = 2030 sq.mi.
16060004 -- Northern Big Smoky Valley. Nevada.
Area = 1890 sq.mi.
16060005 -- Diamond-Monitor Valleys. Nevada.
Area = 3070 sq.mi.
16060006 -- Little Smoky-Newark Valleys. Nevada.
Area = 1430 sq.mi.
16060007 -- Long-Ruby Valleys. Nevada.
Area = 4060 sq.mi.
16060008 -- Spring-Steptoe Valleys. Nevada.
Area = 5240 sq.mi.
16060009 -- Dry Lake Valley. Nevada.
Area = 2160 sq.mi.
16060010 -- Fish Lake-Soda Spring Valleys.
California, Nevada.
Area = 2720 sq.mi.
16060011 -- Ralston-Stone Cabin Valleys. Nevada.
Area = 3190 sq.mi.
16060012 -- Hot Creek-Railroad Valleys. Nevada.
Area = 4660 sq.mi.
16060013 -- Cactus-Sarcobatus Flats. Nevada.
Area = 2720 sq.mi.
16060014 -- Sand Spring-Tikaboo Valleys. Nevada.
Area = 5070 sq.mi.
16060015 -- Ivanpah-Pahrump Valleys. California,
Nevada.
Area = 2830 sq.mi.
Region 17 Pacific Northwest Region -- The drainage within the United
States that ultimately discharges into: (a) the Straits of
Georgia and of Juan De Fuca, and (b) the Pacific Ocean within
the states of Oregon and Washington; and that part of the
Great Basin whose discharge is into the state of Oregon.
Includes all of Washington and parts of California,
Idaho, Montana, Nevada, Oregon, Utah, and Wyoming.
Subregion 1701 -- Kootenai-Pend Oreille-Spokane: The Kootenai, Pend
Oreille, and Spokane River Basins within the United
States. Idaho, Montana, and Washington.
Area = 36600 sq.mi.
Accounting Unit 170101 -- Kootenai: The Kootenai River Basin within
the United States. Idaho, Montana.
Area = 4850 sq.mi.
Cataloging Units 17010101 -- Upper Kootenai. Idaho, Montana.
Area = 2290 sq.mi.
17010102 -- Fisher. Montana.
Area = 843 sq.mi.
17010103 -- Yaak. Montana.
Area = 630 sq.mi.
17010104 -- Lower Kootenai. Idaho, Montana.
Area = 887 sq.mi.
17010105 -- Moyie. Idaho, Montana.
Area = 203 sq.mi.
Accounting Unit 170102 -- Pend Oreille: The Pend Oreille River Basin
within the United States. Idaho, Montana,
and Washington.
Area = 25100 sq.mi.
Cataloging Units 17010201 -- Upper Clark Fork. Montana.
Area = 2320 sq.mi.
17010202 -- Flint-Rock. Montana.
Area = 1400 sq.mi.
17010203 -- Blackfoot. Montana.
Area = 2340 sq.mi.
17010204 -- Middle Clark Fork. Montana.
Area = 1970 sq.mi.
17010205 -- Bitterroot. Montana.
Area = 2860 sq.mi.
17010206 -- North Fork Flathead. Montana.
Area = 967 sq.mi.
17010207 -- Middle Fork Flathead. Montana.
Area = 1160 sq.mi.
17010208 -- Flathead Lake. Montana.
Area = 1160 sq.mi.
17010209 -- South Fork Flathead. Montana.
Area = 1690 sq.mi.
17010210 -- Stillwater. Montana.
Area = 830 sq.mi.
17010211 -- Swan. Montana.
Area = 748 sq.mi.
17010212 -- Lower Flathead. Montana.
Area = 2010 sq.mi.
17010213 -- Lower Clark Fork. Idaho, Montana.
Area = 2330 sq.mi.
17010214 -- Pend Oreille Lake. Idaho, Washington.
Area = 1240 sq.mi.
17010215 -- Priest. Idaho, Washington.
Area = 983 sq.mi.
17010216 -- Pend Oreille. Idaho, Washington.
Area = 1080 sq.mi.
Accounting Unit 170103 -- Spokane: The Spokane River Basin. Idaho,
Washington.
Area = 6680 sq.mi.
Cataloging Units 17010301 -- Upper Coeur d'Alene. Idaho
Area = 905 sq.mi.
17010302 -- South Fork Coeur d'Alene. Idaho.
Area = 297 sq.mi.
17010303 -- Coeur d'Alene Lake. Idaho,
Washington.
Area = 663 sq.mi.
17010304 -- St. Joe. Idaho.
Area = 1860 sq.mi.
17010305 -- Upper Spokane. Idaho, Washington.
Area = 609 sq.mi.
17010306 -- Hangman. Idaho, Washington.
Area = 714 sq.mi.
17010307 -- Lower Spokane. Washington.
Area = 904 sq.mi.
17010308 -- Little Spokane. Idaho, Washington.
Area = 723 sq.mi.
Subregion 1702 -- Upper Columbia: The Columbia River Basin within the
the United States above the confluence with the
Snake River Basin, excluding the Yakima River
Basin. Washington.
Area = 22600 sq.mi.
Accounting Unit 170200 -- Upper Columbia. Washington.
Area = 22600 sq.mi.
Cataloging Units 17020001 -- Franklin D. Roosevelt Lake.
Washington.
Area = 2170 sq.mi.
17020002 -- Kettle. Washington.
Area = 966 sq.mi.
17020003 -- Colville. Washington.
Area = 1030 sq.mi.
17020004 -- Sanpoil. Washington.
Area = 1080 sq.mi.
17020005 -- Chief Joseph. Washington.
Area = 1390 sq.mi.
17020006 -- Okanogan. Washington.
Area = 1640 sq.mi.
17020007 -- Similkameen. Washington.
Area = 671 sq.mi.
17020008 -- Methow. Washington.
Area = 1820 sq.mi.
17020009 -- Lake Chelan. Washington.
Area = 955 sq.mi.
17020010 -- Upper Columbia-Entiat. Washington.
Area = 1520 sq.mi.
17020011 -- Wenatchee. Washington.
Area = 1350 sq.mi.
17020012 -- Moses Coulee. Washington.
Area = 926 sq.mi.
17020013 -- Upper Crab. Washington.
Area = 1860 sq.mi.
17020014 -- Banks Lake. Washington.
Area = 609 sq.mi.
17020015 -- Lower Crab. Washington.
Area = 2510 sq.mi.
17020016 -- Upper Columbia-Priest Rapids.
Washington.
Area = 2070 sq.mi.
Subregion 1703 -- Yakima. The Yakima River Basin. Washington.
Area = 6210 sq.mi.
Accounting Unit 170300 -- Yakima. Washington.
Area = 6210 sq.mi.
Cataloging Units 17030001 -- Upper Yakima. Washington.
Area = 2130 sq.mi.
17030002 -- Naches. Washington.
Area = 1130 sq.mi.
17030003 -- Lower Yakima, Washington.
Area = 2950 sq.mi.
Subregion 1704 -- Upper Snake: The Snake River Basin to and
including the Clover Creek Basin.
Idaho, Nevada, Utah, Wyoming.
Area = 35600 sq.mi.
Accounting Unit 170401 -- Snake headwaters: The Snake River Basin
above Kelly Mountain. Idaho, Wyoming.
Area = 5690 sq.mi.
Cataloging Units 17040101 -- Snake headwaters. Wyoming.
Area = 1680 sq.mi.
17040102 -- Gros Ventre. Wyoming.
Area = 638 sq.mi.
17040103 -- Greys-Hobock. Wyoming.
Area = 1570 sq.mi.
17040104 -- Palisades. Idaho, Wyoming.
Area = 915 sq.mi.
17040105 -- Salt. Idaho, Wyoming.
Area = 887 sq.mi.
Accounting Unit 170402 -- Upper Snake: The Snake River Basin from
Kelly Mountain to and including the
Clover Creek Basin. Idaho, Nevada,
Utah, Wyoming.
Area = 29900 sq.mi.
Cataloging Units 17040201 -- Idaho Falls. Idaho.
Area = 1140 sq.mi.
17040202 -- Upper Henrys. Idaho, Wyoming.
Area = 1090 sq.mi.
17040203 -- Lower Henrys. Idaho, Wyoming.
Area = 1040 sq.mi.
17040204 -- Teton. Idaho, Wyoming.
Area = 1130 sq.mi.
17040205 -- Willow. Idaho.
Area = 645 sq.mi.
17040206 -- American Falls. Idaho.
Area = 2850 sq.mi.
17040207 -- Blackfoot. Idaho.
Area = 1080 sq.mi.
17040208 -- Portneuf. Idaho.
Area = 1320 sq.mi.
17040209 -- Lake Walcott. Idaho.
Area = 3670 sq.mi.
17040210 -- Raft. Idaho, Utah.
Area = 1470 sq.mi.
17040211 -- Goose. Idaho, Nevada, Utah.
Area = 1150 sq.mi.
17040212 -- Upper Snake-Rock. Idaho.
Area = 2440 sq.mi.
17040213 -- Salmon Falls. Idaho, Nevada.
Area = 2120 sq.mi.
17040214 -- Beaver-Camas. Idaho.
Area = 982 sq.mi.
17040215 -- Medicine Lodge. Idaho.
Area = 952 sq.mi.
17040216 -- Birch. Idaho.
Area = 692 sq.mi.
17040217 -- Little Lost. Idaho.
Area = 957 sq.mi.
17040218 -- Big Lost. Idaho.
Area = 1900 sq.mi.
17040219 -- Big Wood. Idaho.
Area = 1460 sq.mi.
17040220 -- Camas. Idaho.
Area = 672 sq.mi.
17040221 -- Little Wood. Idaho.
Area = 1120 sq.mi.
Subregion 1705 -- Middle Snake: The Snake River Basin below the Clover
Creek Basin to Hells Canyon Dam. Idaho,
Nevada, Oregon.
Area = 36700 sq.mi.
Accounting Unit 170501 -- Middle Snake-Boise: The Snake River Basin
below the Clover Creek Basin to and
including the Weiser River Basin.
Idaho, Nevada, Oregon.
Area = 32600 sq.mi.
Cataloging Units 17050101 -- C. J. Strike Reservoir. Idaho.
Area = 2150 sq.mi.
17050102 -- Bruneau. Idaho, Nevada.
Area = 3290 sq.mi.
17050103 -- Middle Snake-Succor. Idaho, Oregon.
Area = 2280 sq.mi.
17050104 -- Upper Owyhee. Idaho, Nevada.
Area = 2110 sq.mi.
17050105 -- South Fork Owyhee. Idaho, Nevada,
Oregon.
Area = 1860 sq.mi.
17050106 -- East Little Owyhee. Idaho. Nevada,
Oregon.
Area = 910 sq.mi.
17050107 -- Middle Owyhee. Idaho, Nevada,
Oregon.
Area = 1460 sq.mi.
17050108 -- Jordan. Idaho, Oregon.
Area = 1270 sq.mi.
17050109 -- Crooked-Rattlesnake. Oregon.
Area = 1340 sq.mi.
17050110 -- Lower Owyhee. Oregon.
Area = 2000 sq.mi.
17050111 -- North and Middle Forks Boise. Idaho.
Area = 761 sq.mi.
17050112 -- Boise-Mores. Idaho.
Area = 620 sq.mi.
17050113 -- South Fork Boise. Idaho.
Area = 1300 sq.mi.
17050114 -- Lower Boise. Idaho.
Area = 1330 sq.mi.
17050115 -- Middle Snake-Payette. Idaho,
Oregon.
Area = 294 sq.mi.
17050116 -- Upper Malheur. Oregon.
Area = 2430 sq.mi.
17050117 -- Lower Malheur. Oregon.
Area = 927 sq.mi.
17050118 -- Bully. Oregon.
Area = 577 sq.mi.
17050119 -- Willow. Oregon.
Area = 773 sq.mi.
17050120 -- South Fork Payette. Idaho.
Area = 813 sq.mi.
17050121 -- Middle Fork Payette. Idaho.
Area = 338 sq.mi.
17050122 -- Payette. Idaho.
Area = 1240 sq.mi.
17050123 -- North Fork Payette. Idaho.
Area = 912 sq.mi.
17050124 -- Weiser. Idaho.
Area = 1660 sq.mi.
Accounting Unit 170502 -- Middle Snake-Powder: The Snake River Basin
below the Weiser River Basin
to Hells Canyon Dam. Idaho, Oregon.
Area = 4100 sq.mi.
Cataloging Units 17050201 -- Brownlee Reservoir. Idaho, Oregon.
Area = 1290 sq.mi.
17050202 -- Burnt. Oregon.
Area = 1090 sq.mi.
17050203 -- Powder. Oregon.
Area = 1720 sq.mi.
Subregion 1706 -- Lower Snake: The Snake River Basin below Hells
Canyon Dam to its confluence with the Columbia
River. Idaho, Oregon, Washington.
Area = 35200 sq.mi.
Accounting Unit 170601 -- Lower Snake: The Snake River Basin below
Hells Canyon Dam to its confluence with
the Columbia River, excluding the Salmon
and Clearwater River Basins. Idaho,
Oregon, Washington.
Area = 11800 sq.mi.
Cataloging Units 17060101 -- Hells Canyon. Idaho, Oregon.
Area = 545 sq.mi.
17060102 -- Imnaha. Oregon.
Area = 855 sq.mi.
17060103 -- Lower Snake-Asotin. Idaho, Oregon,
Washington.
Area = 711 sq.mi.
17060104 -- Upper Grande Ronde. Oregon.
Area = 1650 sq.mi.
17060105 -- Wallowa. Oregon.
Area = 950 sq.mi.
17060106 -- Lower Grande Ronde. Oregon,
Washington.
Area = 1530 sq.mi.
17060107 -- Lower Snake-Tucannon. Washington.
Area = 1480 sq.mi.
17060108 -- Palouse. Idaho, Washington.
Area = 2360 sq.mi.
17060109 -- Rock. Idaho, Washington.
Area = 962 sq.mi.
17060110 -- Lower Snake. Washington.
Area = 731 sq.mi.
Accounting Unit 170602 -- Salmon: The Salmon River Basin. Idaho.
Area = 14000 sq.mi.
Cataloging Units 17060201 -- Upper Salmon. Idaho.
Area = 2410 sq.mi.
17060202 -- Pahsimeroi. Idaho.
Area = 825 sq.mi.
17060203 -- Middle Salmon-Panther. Idaho.
Area = 1810 sq.mi.
17060204 -- Lemhi. Idaho.
Area = 1270 sq.mi.
17060205 -- Upper Middle Fork Salmon. Idaho.
Area = 1490 sq.mi.
17060206 -- Lower Middle Fork Salmon. Idaho.
Area = 1370 sq.mi.
17060207 -- Middle Salmon-Chamberlain. Idaho.
Area = 1700 sq.mi.
17060208 -- South Fork Salmon. Idaho.
Area = 1310 sq.mi.
17060209 -- Lower Salmon. Idaho.
Area = 1240 sq.mi.
17060210 -- Little Salmon. Idaho.
Area = 582 sq.mi.
Accounting Unit 170603 -- Clearwater: The Clearwater River Basin.
Idaho, Washington.
Area = 9420 sq.mi.
Cataloging Units 17060301 -- Upper Selway. Idaho.
Area = 997 sq.mi.
17060302 -- Lower Selway. Idaho.
Area = 1030 sq.mi.
17060303 -- Lochsa. Idaho.
Area = 1180 sq.mi.
17060304 -- Middle Fork Clearwater. Idaho.
Area = 213 sq.mi.
17060305 -- South Fork Clearwater. Idaho.
Area = 1170 sq.mi.
17060306 -- Clearwater. Idaho, Washington.
Area = 2340 sq.mi.
17060307 -- Upper North Fork Clearwater. Idaho.
Area = 1320 sq.mi.
17060308 -- Lower North Fork Clearwater. Idaho.
Area = 1170 sq.mi.
Subregion 1707 -- Middle Columbia: The Columbia River Basin below the
confluence with the Snake River Basin to Bonneville
Dam. Oregon, Washington.
Area = 29800 sq.mi.
Accounting Unit 170701 -- Middle Columbia: The Columbia River Basin
below the confluence with the Snake River
Basin to Bonneville Dam, excluding the
Deschutes and John Day River Basins.
Oregon, Washington.
Area = 11200 sq.mi.
Cataloging Units 17070101 -- Middle Columbia-Lake Wallula.
Oregon, Washington.
Area = 2550 sq.mi.
17070102 -- Walla Walla. Oregon, Washington.
Area = 1750 sq.mi.
17070103 -- Umatilla. Oregon.
Area = 2540 sq.mi.
17070104 -- Willow. Oregon.
Area = 881 sq.mi.
17070105 -- Middle Columbia-Hood. Oregon,
Washington.
Area = 2170 sq.mi.
17070106 -- Klickitat. Washington.
Area = 1330 sq.mi.
Accounting Unit 170702 -- John Day: The John Day River Basin.
Oregon.
Area = 7910 sq.mi.
Cataloging Units 17070201 -- Upper John Day. Oregon.
Area = 2130 sq.mi.
17070202 -- North Fork John Day. Oregon.
Area = 1830 sq.mi.
17070203 -- Middle Fork John Day. Oregon.
Area = 785 sq.mi.
17070204 -- Lower John Day. Oregon.
Area = 3160 sq.mi.
Accounting Unit 170703 -- Deschutes: The Deschutes River Basin.
Oregon.
Area = 10700 sq.mi.
Cataloging Units 17070301 -- Upper Deschutes. Oregon.
Area = 2140 sq.mi.
17070302 -- Little Deschutes. Oregon.
Area = 1020 sq.mi.
17070303 -- Beaver-South Fork. Oregon.
Area = 1530 sq.mi.
17070304 -- Upper Crooked. Oregon.
Area = 1150 sq.mi.
17070305 -- Lower Crooked. Oregon.
Area = 1840 sq.mi.
17070306 -- Lower Deschutes. Oregon.
Area = 2300 sq.mi.
17070307 -- Trout. Oregon.
Area = 695 sq.mi.
Subregion 1708 -- Lower Columbia: The Columbia River Basin below
Bonneville Dam, excluding the Willamette River
Basin. Oregon, Washington.
Area = 6250 sq.mi.
Accounting Unit 170800 -- Lower Columbia. Oregon, Washington.
Area = 6250 sq.mi.
Cataloging Units 17080001 -- Lower Columbia-Sandy. Oregon,
Washington.
Area = 1110 sq.mi.
17080002 -- Lewis. Washington.
Area = 1080 sq.mi.
17080003 -- Lower Columbia-Clatskanie. Oregon,
Washington.
Area = 896 sq.mi.
17080004 -- Upper Cowlitz. Washington.
Area = 1030 sq.mi.
17080005 -- Lower Cowlitz. Washington.
Area = 1460 sq.mi.
17080006 -- Lower Columbia. Oregon, Washington.
Area = 672 sq.mi.
Subregion 1709 -- Willamette: The Willamette River Basin. Oregon.
Area = 11400 sq.mi.
Accounting Unit 170900 -- Willamette. Oregon.
Area = 11400 sq.mi.
Cataloging Units 17090001 -- Middle Fork Willamette. Oregon.
Area = 1350 sq.mi.
17090002 -- Coast Fork Willamette. Oregon.
Area = 664 sq.mi.
17090003 -- Upper Willamette. Oregon.
Area = 1830 sq.mi.
17090004 -- Mckenzie. Oregon.
Area = 1360 sq.mi.
17090005 -- North Santiam. Oregon.
Area = 771 sq.mi.
17090006 -- South Santiam. Oregon.
Area = 1050 sq.mi.
17090007 -- Middle Willamette. Oregon.
Area = 700 sq.mi.
17090008 -- Yamhill. Oregon.
Area = 770 sq.mi.
17090009 -- Molalla-Pudding. Oregon.
Area = 883 sq.mi.
17090010 -- Tualatin. Oregon.
Area = 718 sq.mi.
17090011 -- Clackamas. Oregon.
Area = 935 sq.mi.
17090012 -- Lower Willamette. Oregon.
Area = 407 sq.mi.
Subregion 1710 -- Oregon-Washington Coastal: The drainage into the
drainage boundary to the Smith River Basin boundary,
excluding the Columbia River Basin. California,
Oregon, Washington.
Area = 23200 sq.mi.
Accounting Unit 171001 -- Washington Coastal: The drainage into the
Pacific Ocean from the Strait of Juan De
Fuca drainage boundary to the Columbia
River Basin boundary. Washington.
Area = 6240 sq.mi.
Cataloging Units 17100101 -- Hoh-Quillayute. Washington.
Area = 1230 sq.mi.
17100102 -- Queets-Quinault. Washington.
Area = 1190 sq.mi.
17100103 -- Upper Chehalis. Washington.
Area = 1310 sq.mi.
17100104 -- Lower Chehalis. Washington.
Area = 838 sq.mi.
17100105 -- Grays Harbor. Washington.
Area = 568 sq.mi.
17100106 -- Willapa Bay. Washington.
Area = 1100 sq.mi.
Accounting Unit 171002 -- Northern Oregon Coastal: The drainage into
the Pacific Ocean from the Columbia River
Basin boundary to the Umpqua River Basin
boundary. Oregon.
Area = 4310 sq.mi.
Cataloging Units 17100201 -- Necanicum. Oregon.
Area = 129 sq.mi.
17100202 -- Nehalem. Oregon.
Area = 860 sq.mi.
17100203 -- Wilson-Trask-Nestucca. Oregon.
Area = 973 sq.mi.
17100204 -- Siletz-Yaquina. Oregon.
Area = 753 sq.mi.
17100205 -- Alsea. Oregon.
Area = 697 sq.mi.
17100206 -- Siuslaw. Oregon.
Area = 769 sq.mi.
17100207 -- Siltcoos. Oregon.
Area = 129 sq.mi.
Accounting Unit 171003 -- Southern Oregon Coastal: The drainage into
the Pacific Ocean from and including the
Umpqua River Basin to the Smith River
Basin boundary. California, Oregon.
Area = 12600 sq.mi.
Cataloging Units 17100301 -- North Umpqua. Oregon.
Area = 1350 sq.mi.
17100302 -- South Umpqua. Oregon.
Area = 1790 sq.mi.
17100303 -- Umpqua. Oregon.
Area = 1500 sq.mi.
17100304 -- Coos. Oregon.
Area = 739 sq.mi.
17100305 -- Coquille. Oregon.
Area = 1030 sq.mi.
17100306 -- Sixes. Oregon.
Area = 467 sq.mi.
17100307 -- Upper Rogue. Oregon.
Area = 1610 sq.mi.
17100308 -- Middle Rogue. Oregon.
Area = 885 sq.mi.
17100309 -- Applegate. California, Oregon.
Area = 759 sq.mi.
17100310 -- Lower Rogue. Oregon.
Area = 898 sq.mi.
17100311 -- Illinois. California, Oregon.
Area = 981 sq.mi.
17100312 -- Chetco. California, Oregon.
Area = 630 sq.mi.
Subregion 1711 -- Puget Sound: The drainage within the United States
that discharges into: (a) Puget Sound and the
Straits of Georgia and of Juan De Fuca; and (b) the
Fraser River Basin. Washington.
Area = 16800 sq.mi.
Accounting Unit 171100 -- Puget Sound. Washington.
Area = 16800 sq.mi.
Cataloging Units 17110001 -- Fraser. Washington.
Area = 249 sq.mi.
17110002 -- Strait of Georgia. Washington.
Area = 955 sq.mi.
17110003 -- San Juan Islands. Washington.
Area = 626 sq.mi.
17110004 -- Nooksack. Washington.
Area = 795 sq.mi.
17110005 -- Upper Skagit. Washington.
Area = 1630 sq.mi.
17110006 -- Sauk. Washington.
Area = 741 sq.mi.
17110007 -- Lower Skagit. Washington.
Area = 447 sq.mi.
17110008 -- Stillaguamish. Washington.
Area = 704 sq.mi.
17110009 -- Skykomish. Washington.
Area = 853 sq.mi.
17110010 -- Snoqualmie. Washington.
Area = 693 sq.mi.
17110011 -- Snohomish. Washington.
Area = 278 sq.mi.
17110012 -- Lake Washington. Washington.
Area = 619 sq.mi.
17110013 -- Duwamish. Washington.
Area = 487 sq.mi.
17110014 -- Puyallup. Washington.
Area = 996 sq.mi.
17110015 -- Nisqually. Washington.
Area = 726 sq.mi.
17110016 -- Deschutes. Washington.
Area = 168 sq.mi.
17110017 -- Skokomish. Washington.
Area = 248 sq.mi.
17110018 -- Hood Canal. Washington.
Area = 957 sq.mi.
17110019 -- Puget Sound. Washington.
Area = 2550 sq.mi.
17110020 -- Dungeness-Elwha. Washington.
Area = 1270 sq.mi.
17110021 -- Crescent-Hoko. Washington.
Area = 774 sq.mi.
Subregion 1712 -- Oregon closed basins: The drainage of the Great
Basin that discharges into the state
of Oregon. California, Nevada, Oregon.
Area = 17300 sq.mi.
Accounting Unit 171200 -- Oregon closed basins. California,
Nevada, Oregon.
Area = 17300 sq.mi.
Cataloging Units 17120001 -- Harney-Malheur Lakes. Oregon.
Area = 1420 sq.mi.
17120002 -- Silvies. Oregon.
Area = 1310 sq.mi.
17120003 -- Donner Und Blitzen. Oregon.
Area = 765 sq.mi.
17120004 -- Silver. Oregon.
Area = 1670 sq.mi.
17120005 -- Summer Lake. Oregon.
Area = 4100 sq.mi.
17120006 -- Lake Abert. Oregon.
Area = 1020 sq.mi.
17120007 -- Warner Lakes. California, Nevada,
Oregon.
Area = 1900 sq.mi.
17120008 -- Guano. Nevada, Oregon.
Area = 2970 sq.mi.
17120009 -- Alvord Lake. Nevada, Oregon.
Area = 2110 sq.mi.
Region 18 California Region -- (a) the drainage within the United States
that ultimately discharges into the Pacific Ocean within
the state of California; and (b) those parts of the Great Basin
(or other closed basins) that discharge into the state of
California. Includes parts of California, Nevada, and Oregon.
Subregion 1801 -- Klamath-Northern California Coastal: The drainage
into the Pacific Ocean from and including the Smith
River Basin to and including the Stemple
Creek Basin. California, Oregon.
Area = 24800 sq.mi.
Accounting Unit 180101 -- Northern California Coastal: The drainage
into the Pacific Ocean from and including
the Smith River Basin to and including
the Stemple Creek Basin, excluding the
Klamath River Basin. California, Oregon.
Area = 9230 sq.mi.
Cataloging Units 18010101 -- Smith. California, Oregon.
Area = 788 sq.mi.
18010102 -- Mad-Redwood. California.
Area = 1130 sq.mi.
18010103 -- Upper Eel. California.
Area = 697 sq.mi.
18010104 -- Middle Fork Eel. California.
Area = 747 sq.mi.
18010105 -- Lower Eel. California.
Area = 1510 sq.mi.
18010106 -- South Fork Eel. California.
Area = 678 sq.mi.
18010107 -- Mattole. California.
Area = 485 sq.mi.
18010108 -- Big-Navarro-Garcia. California.
Area = 1230 sq.mi.
18010109 -- Gualala-Salmon. California.
Area = 343 sq.mi.
18010110 -- Russian. California.
Area = 1470 sq.mi.
18010111 -- Bodega Bay. California.
Area = 147 sq.mi.
Accounting Unit 180102 -- Klamath. The Klamath River Basin.
California, Oregon.
Area = 15500 sq.mi.
Cataloging Units 18010201 -- Williamson. Oregon.
Area = 1430 sq.mi.
18010202 -- Sprague. Oregon.
Area = 1600 sq.mi.
18010203 -- Upper Klamath Lake. Oregon.
Area = 738 sq.mi.
18010204 -- Lost. California, Oregon.
Area = 2960 sq.mi.
18010205 -- Butte. California, Oregon.
Area = 601 sq.mi.
18010206 -- Upper Klamath. California, Oregon.
Area = 1400 sq.mi.
18010207 -- Shasta. California.
Area = 791 sq.mi.
18010208 -- Scott. California.
Area = 802 sq.mi.
18010209 -- Lower Klamath. California, Oregon.
Area = 1520 sq.mi.
18010210 -- Salmon. California.
Area = 748 sq.mi.
18010211 -- Trinity. California.
Area = 2010 sq.mi.
18010212 -- South Fork Trinity. California.
Area = 926 sq.mi.
Subregion 1802 -- Sacramento: The Sacramento River Basin and drainage
into Goose Lake. California, Oregon.
Area = 27600 sq.mi.
Accounting Unit 180200 -- Upper Sacramento: The Sacramento River
Basin to and including Shasta Lake and
drainage into Goose Lake. California,
Oregon.
Area = 7650 sq.mi.
Cataloging Units 18020001 -- Goose Lake. California, Oregon.
Area = 1080 sq.mi.
18020002 -- Upper Pit. California.
Area = 2620 sq.mi.
18020003 -- Lower Pit. California.
Area = 2690 sq.mi.
18020004 -- Mccloud. California.
Area = 674 sq.mi.
18020005 -- Sacramento headwaters. California.
Area = 587 sq.mi.
Accounting Unit 180201 -- Lower Sacramento: The Sacramento River
Basin below Shasta Dam. California.
Area = 19900 sq.mi.
Cataloging Units 18020101 -- Sacramento-Lower Cow-Lower Clear.
California.
Area = 419 sq.mi.
18020102 -- Lower Cottonwood. California.
Area = 328 sq.mi.
18020103 -- Sacramento-Lower Thomes.
California.
Area = 1120 sq.mi.
18020104 -- Sacramento-Stone Corral. California.
Area = 1850 sq.mi.
18020105 -- Lower Butte. California.
Area = 593 sq.mi.
18020106 -- Lower Feather. California.
Area = 681 sq.mi.
18020107 -- Lower Yuba. California.
Area = 34 sq.mi.
18020108 -- Lower Bear. California.
Area = 100 sq.mi.
18020109 -- Lower Sacramento. California.
Area = 1720 sq.mi.
18020110 -- Lower Cache. California.
Area = 190 sq.mi.
18020111 -- Lower American. California.
Area = 299 sq.mi.
18020112 -- Sacramento-Upper Clear. California.
Area = 269 sq.mi.
18020113 -- Cottonwood headwaters. California.
Area = 602 sq.mi.
18020114 -- Upper Elder-Upper Thomes.
California.
Area = 328 sq.mi.
18020115 -- Upper Stony. California.
Area = 731 sq.mi.
18020116 -- Upper Cache. California.
Area = 939 sq.mi.
18020117 -- Upper Putah. California.
Area = 558 sq.mi.
18020118 -- Upper Cow-Battle. California.
Area = 832 sq.mi.
18020119 -- Mill-Big Chico. California.
Area = 896 sq.mi.
18020120 -- Upper Butte. California.
Area = 202 sq.mi.
18020121 -- North Fork Feather. California.
Area = 1190 sq.mi.
18020122 -- East Branch North Fork Feather.
California.
Area = 1010 sq.mi.
18020123 -- Middle Fork Feather. California.
Area = 1350 sq.mi.
18020124 -- Honcut headwaters. California.
Area = 107 sq.mi.
18020125 -- Upper Yuba. California.
Area = 1290 sq.mi.
18020126 -- Upper Bear. California.
Area = 361 sq.mi.
18020127 -- Upper Coon-Upper Auburn. California.
Area = 89 sq.mi.
18020128 -- North Fork American. California.
Area = 998 sq.mi.
18020129 -- South Fork American. California.
Area = 843 sq.mi.
Subregion 1803 -- Tulare-Buena Vista Lakes: The drainage into the
Tulare and Buena Vista Lake closed basins.
California.
Area = 16200 sq.mi.
Accounting Unit 180300 -- Tulare-Buena Vista Lakes. California.
Area = 16200 sq.mi.
Cataloging Units 18030001 -- Upper Kern. California.
Area = 1070 sq.mi.
18030002 -- South Fork Kern. California.
Area = 964 sq.mi.
18030003 -- Middle Kern-Upper Tehachapi-
Grapevine. California.
Area = 1310 sq.mi.
18030004 -- Upper Poso. California.
Area = 268 sq.mi.
18030005 -- Upper Deer-Upper White. California.
Area = 345 sq.mi.
18030006 -- Upper Tule. California.
Area = 410 sq.mi.
18030007 -- Upper Kaweah. California.
Area = 828 sq.mi.
18030008 -- Mill. California.
Area = 156 sq.mi.
18030009 -- Upper Dry. California.
Area = 124 sq.mi.
18030010 -- Upper King. California.
Area = 1520 sq.mi.
18030011 -- Upper Los Gatos-Avenal. California.
Area = 702 sq.mi.
18030012 -- Tulare-Buena Vista Lakes.
California.
Area = 8510 sq.mi.
Subregion 1804 -- San Joaquin: The San Joaquin River Basin.
California.
Area = 15600 sq.mi.
Accounting Unit 180400 -- San Joaquin. California.
Area = 15600 sq.mi.
Cataloging Units 18040001 -- Middle San Joaquin-Lower
Chowchilla. California.
Area = 2640 sq.mi.
18040002 -- Middle San Joaquin-Lower
Merced-Lower Stanislaus. California.
Area = 1830 sq.mi.
18040003 -- San Joaquin Delta. California.
Area = 938 sq.mi.
18040004 -- Lower Calaveras-Mormon Slough.
California.
Area = 235 sq.mi.
18040005 -- Lower Cosumnes-Lower Mokelumne.
California.
Area = 747 sq.mi.
18040006 -- Upper San Joaquin. California.
Area = 1680 sq.mi.
18040007 -- Upper Chowchilla-Upper Fresno.
California.
Area = 938 sq.mi.
18040008 -- Upper Merced. California.
Area = 1080 sq.mi.
18040009 -- Upper Tuolumne. California.
Area = 1600 sq.mi.
18040010 -- Upper Stanislaus. California.
Area = 971 sq.mi.
18040011 -- Upper Calaveras. California.
Area = 383 sq.mi.
18040012 -- Upper Mokelumne. California.
Area = 764 sq.mi.
18040013 -- Upper Cosumnes. California.
Area = 632 sq.mi.
18040014 -- Panoche-San Luis Reservoir.
California.
Area = 1120 sq.mi.
Subregion 1805 -- San Francisco Bay: The drainage into the Pacific
Ocean from the Stemple Creek Basin boundary
to and including the Pescadero Creek Basin,
excluding the Sacramento and San Joaquin River
Basins. California.
Area = 4470 sq.mi.
Accounting Unit 180500 -- San Francisco Bay. California.
Area = 4470 sq.mi.
Cataloging Units 18050001 -- Suisun Bay. California.
Area = 644 sq.mi.
18050002 -- San Pablo Bay. California.
Area = 1200 sq.mi.
18050003 -- Coyote. California.
Area = 831 sq.mi.
18050004 -- San Francisco Bay. California.
Area = 1200 sq.mi.
18050005 -- Tomales-Drake Bays. California.
Area = 339 sq.mi.
18050006 -- San Francisco Coastal South.
California.
Area = 256 sq.mi.
Subregion 1806 -- Central California Coastal: The drainage into the
Pacific Ocean from the Pescadero Creek Basin
boundary to and including the Rincon Creek Basin.
California.
Area = 11400 sq.mi.
Accounting Unit 180600 -- Central California Coastal.
California.
Area = 11400 sq.mi.
Cataloging Units 18060001 -- San Lorenzo-Soquel. California.
Area = 374 sq.mi.
18060002 -- Pajaro. California.
Area = 1290 sq.mi.
18060003 -- Carrizo Plain. California.
Area = 440 sq.mi.
18060004 -- Estrella. California.
Area = 930 sq.mi.
18060005 -- Salinas. California.
Area = 3250 sq.mi.
18060006 -- Central Coastal. California.
Area = 1070 sq.mi.
18060007 -- Cuyama. California.
Area = 1130 sq.mi.
18060008 -- Santa Maria. California.
Area = 675 sq.mi.
18060009 -- San Antonio. California.
Area = 219 sq.mi.
18060010 -- Santa Ynez. California.
Area = 893 sq.mi.
18060011 -- Alisal-Elkhorn Sloughs. California.
Area = 232 sq.mi.
18060012 -- Carmel. California.
Area = 305 sq.mi.
18060013 -- Santa Barbara Coastal. California.
Area = 381 sq.mi.
18060014 -- Santa Barbara Channel Islands.
California.
Area = 187 sq.mi.
Subregion 1807 -- Southern California Coastal: The drainage within
the United States that discharges into
the Pacific Ocean from the Rincon Creek Basin
boundary to the California-Baja California
international boundary. California.
Area = 11100 sq.mi.
Accounting Unit 180701 -- Ventura-San Gabriel Coastal: The drainage
into the Pacific Ocean from the Rincon
Creek Basin boundary to and including the
San Grabriel River Basin. California.
Area = 4530 sq.mi.
Cataloging Units 18070101 -- Ventura. California.
Area = 279 sq.mi.
18070102 -- Santa Clara. California.
Area = 1610 sq.mi.
18070103 -- Calleguas. California.
Area = 377 sq.mi.
18070104 -- Santa Monica Bay. California.
Area = 575 sq.mi.
18070105 -- Los Angeles. California.
Area = 819 sq.mi.
18070106 -- San Gabriel. California.
Area = 713 sq.mi.
18070107 -- San Pedro Channel Islands.
California.
Area = 154 sq.mi.
Accounting Unit 180702 -- Santa Ana: The drainage into the Pacific
Ocean from the San Gabriel River Basin
boundary to the Moro Canyon drainage
boundary Near Laguna Beach. California.
Area = 2680 sq.mi.
Cataloging Units 18070201 -- Seal Beach. California.
Area = 90 sq.mi.
18070202 -- San Jacinto. California.
Area = 757 sq.mi.
18070203 -- Santa Ana. California.
Area = 1680 sq.mi.
18070204 -- Newport Bay. California.
Area = 154 sq.mi.
Accounting Unit 180703 -- Laguna-San Diego Coastal: The drainage
within the United States that discharges
into the Pacific Ocean from and
including the Moro Canyon drainage basin
near Laguna Beach to the California-Baja
California international boundary.
California.
Area = 3860 sq.mi.
Cataloging Units 18070301 -- Aliso-San Onofre. California.
Area = 498 sq.mi.
18070302 -- Santa Margarita. California.
Area = 731 sq.mi.
18070303 -- San Luis Rey-Escondido. California.
Area = 766 sq.mi.
18070304 -- San Diego. California.
Area = 1390 sq.mi.
18070305 -- Cottonwood-Tijuana. California.
Area = 477 sq.mi.
Subregion 1808 -- North Lahontan: The drainage east of the Sierra
Nevada and north of the Truckee River Basin which
includes the Lahonton closed basins that
discharge into California. California, Nevada.
Area = 4480 sq.mi.
Accounting Unit 180800 -- North Lahontan. California, Nevada.
Area = 4480 sq.mi.
Cataloging Units 18080001 -- Surprise Valley. California, Nevada.
Area = 878 sq.mi.
18080002 -- Madeline Plains. California, Nevada.
Area = 835 sq.mi.
18080003 -- Honey-Eagle Lakes. California,
Nevada.
Area = 2770 sq.mi.
Subregion 1809 -- Northern Mojave-Mono Lake: The Closed Desert Basins
that discharge into South Central California,
including Mono Lake, Owens Lake, Death Valley,
and the Upper Mojave Desert. California, Nevada.
Area = 28000 sq.mi.
Accounting Unit 180901 -- Mono-Owens Lakes. The Mono Lake and
Owens Lake closed basins. California,
Nevada.
Area = 4310 sq.mi.
Cataloging Units 18090101 -- Mono Lake. California, Nevada.
Area = 1070 sq.mi.
18090102 -- Crowley Lake. California, Nevada.
Area = 1900 sq.mi.
18090103 -- Owens Lake. California.
Area = 1340 sq.mi.
Accounting Unit 180902 -- Northern Mojave: The Closed Desert Basins
that discharge into South Central
California, including Death Valley and the
Upper Mojave Desert, excluding Mono Lake and
Owens Lake. California, Nevada.
Area = 23600 sq.mi.
Cataloging Units 18090201 -- Eureka-Saline Valleys. California,
Nevada.
Area = 1640 sq.mi.
18090202 -- Upper Amargosa. California, Nevada.
Area = 3340 sq.mi.
18090203 -- Death Valley-Lower Amargosa.
California, Nevada.
Area = 5330 sq.mi.
18090204 -- Panamint Valley. California.
Area = 1600 sq.mi.
18090205 -- Indian Wells-Searles Valleys.
California.
Area = 2020 sq.mi.
18090206 -- Antelope-Fremont Valleys.
California.
Area = 3310 sq.mi.
18090207 -- Coyote-Cuddeback Lakes. California.
Area = 1820 sq.mi.
18090208 -- Mojave. California.
Area = 4580 sq.mi.
Subregion 1810 -- Southern Mojave-Salton Sea: The closed desert
basins in Southeastern California, including the
Lower Mojave Desert and the Salton Sea.
California.
Area = 16000 sq.mi.
Accounting Unit 181001 -- Southern Mojave: The Lower Mojave Desert.
California.
Area = 8700 sq.mi.
Cataloging Unit 18100100 -- Southern Mojave. California.
Area = 8700 sq.mi.
Accounting Unit 181002 -- Salton Sea: The Salton Sea closed basin.
California.
Area = 7250 sq.mi.
Cataloging Unit 18100200 -- Salton Sea. California.
Area = 7250 sq.mi.
Region 19 Alaska Region -- The drainage within the state of Alaska.
Includes all of Alaska.
Subregion 1901 -- Arctic Slope: The North Slope drainage within the
United States that discharges into the Arctic
Ocean, including the bays, islands, and associated
waters, from the Alaska-Yukon international
boundary to Cape Lisburne. Alaska.
Area = 81000 sq.mi.
Accounting Unit 190100 -- Arctic Slope. Alaska.
Area = 81000 sq.mi.
Cataloging Units 19010001 -- East Arctic Slope. Alaska.
Area = 24000 sq.mi.
19010002 -- Colville. Alaska.
Area = 23000 sq.mi.
19010003 -- West Arctic Slope. Alaska.
Area = 34000 sq.mi.
Subregion 1902 -- Northwest Alaska: The coastal drainage from Cape
Lisburne to the Yukon River Basin boundary,
including the bays, sounds, islands, and
associated waters; and St. Lawrence Island. Alaska.
Area = 75000 sq.mi.
Accounting Unit 190200 -- Northwest Alaska. Alaska.
Area = 75000 sq.mi.
Cataloging Units 19020001 -- Kotzebue Sound. Alaska.
Area = 49000 sq.mi.
19020002 -- Norton Sound-St. Lawrence Island.
Alaska.
Area = 26000 sq.mi.
Subregion 1903 -- Yukon: The Yukon River Basin within the United
States, including its delta. Alaska.
Area = 204000 sq.mi.
Accounting Unit 190300 -- Yukon. Alaska.
Area = 204000 sq.mi.
Cataloging Units 19030001 -- Fortymile-White. Alaska.
Area = 9700 sq.mi.
19030002 -- Upper Yukon. Alaska.
Area = 60000 sq.mi.
19030003 -- Middle Yukon. Alaska.
Area = 21000 sq.mi.
19030004 -- Tanana. Alaska.
Area = 44000 sq.mi.
19030005 -- Koyukuk. Alaska.
Area = 32000 sq.mi.
19030006 -- Lower Yukon. Alaska.
Area = 37000 sq.mi.
Subregion 1904 -- Southwest Alaska: The coastal drainage from the
Yukon River Basin boundary to Kupreanof Point on the
Alaska Peninsula, including the bays, islands, and
associated waters; and the islands of St. Matthew,
Nunivak and Pribilof, and all of the Aleutian
Islands. Alaska.
Area = 124000 sq.mi.
Accounting Unit 190400 -- Southwest Alaska. Alaska.
Area = 124000 sq.mi.
Cataloging Units 19040001 -- Kuskokwim Bay-Nunivak Island-St.
Matthew Island. Alaska.
Area = 61000 sq.mi.
19040002 -- Bristol Bay. Alaska.
Area = 43000 sq.mi.
19040003 -- Aleutian-Pribilof Islands. Alaska.
Area = 20000 sq.mi.
Subregion 1905 -- South Central Alaska: The coastal drainage within
the United States from Kupreanof Point on the
Alaska Peninsula to the Alaska-Yukon international
boundary and southward to Point Riou, including the
bays, islands, sounds, and associated waters.
Alaska.
Area = 99000 sq.mi.
Accounting Unit 190500 -- South Central Alaska. Alaska.
Area = 99000 sq.mi.
Cataloging Units 19050001 -- Kodiak-Shelikof. Alaska.
Area = 12000 sq.mi.
19050002 -- Cook Inlet. Alaska.
Area = 47000 sq.mi.
19050003 -- Gulf of Alaska. Alaska.
Area = 40000 sq.mi.
Subregion 1906 -- Southeast Alaska: The coastal drainage within the
United States from Point Riou to the Alaksa-British
Columbia international boundary, including the bays,
islands, sounds, and associated waters. Alaska.
Area = 49000 sq.mi.
Accounting Unit 190600 -- Southeast Alaska. Alaska.
Area = 49000 sq.mi.
Cataloging Unit 19060000 -- Southeast Alaska. Alaska.
Area = 49000 sq.mi.
Region 20 Hawaii Region -- The drainage within the state of Hawaii.
Includes all of Hawaii.
Subregion 2001 -- Hawaii: The drainage on the island of Hawaii; and
associated waters. Hawaii.
Area = 4030 sq.mi.
Accounting Unit 200100 -- Hawaii. Hawaii.
Area = 4030 sq.mi.
Cataloging Unit 20010000 -- Hawaii. Hawaii.
Area = 4030 sq.mi.
Subregion 2002 -- Maui: The drainage on the island of Maui; and
associated waters. Hawaii.
Area = 730 sq.mi.
Accounting Unit 200200 -- Maui. Hawaii.
Area = 730 sq.mi.
Cataloging Unit 20020000 -- Maui. Hawaii.
Area = 730 sq.mi.
Subregion 2003 -- Kahoolawe: The drainage on the island of Kahoolawe;
and associated waters. Hawaii.
Area = 45 sq.mi.
Accounting Unit 200300 -- Kahoolawe. Hawaii.
Area = 45 sq.mi.
Cataloging Unit 20030000 -- Kahoolawe. Hawaii.
Area = 45 sq.mi.
Subregion 2004 -- Lanai: The drainage on the island of Lanai; and
associated waters. Hawaii.
Area = 140 sq.mi.
Accounting Unit 200400 -- Lanai. Hawaii.
Area = 140 sq.mi.
Cataloging Unit 20040000 -- Lanai. Hawaii.
Area = 140 sq.mi.
Subregion 2005 -- Molokai: The drainage on the island of Molokai; and
associated waters. Hawaii.
Area = 260 sq.mi.
Accounting Unit 200500 -- Molokai. Hawaii.
Area = 260 sq.mi.
Cataloging Unit 20050000 -- Molokai. Hawaii.
Area = 260 sq.mi.
Subregion 2006 -- Oahu: The drainage on the island of Oahu; and
associated waters. Hawaii.
Area = 630 sq.mi.
Accounting Unit 200600 -- Oahu. Hawaii.
Area = 630 sq.mi.
Cataloging Unit 20060000 -- Oahu. Hawaii.
Area = 630 sq.mi.
Subregion 2007 -- Kauai: The drainage on the island of Kauai; and
associated waters. Hawaii.
Area = 560 sq.mi.
Accounting Unit 200700 -- Kauai. Hawaii.
Area = 560 sq.mi.
Cataloging Unit 20070000 -- Kauai. Hawaii.
Area = 560 sq.mi.
Subregion 2008 -- Niihau: The drainage on the islands of Niihau
and Kaula; and associated waters. Hawaii.
Area = 72 sq.mi.
Accounting Unit 200800 -- Niihau. Hawaii.
Area = 72 sq.mi.
Cataloging Unit 20080000 -- Niihau. Hawaii.
Area = 72 sq.mi.
Subregion 2009 -- Northwestern Hawaiian Islands: The drainage on
Kure, Laysan, Lisianski, Necker, and Nihoa Islands;
Gardner Pinnacles; Maro, and Pearl and Hermes
Reefs; French Frigate Shoals; and other islets,
reefs, and associated waters northwest of Niipau
Island. Hawaii.
Area = < 10 sq.mi.
Accounting Unit 200900 -- Northwestern Hawaiian Islands. Hawaii.
Area = < 10 sq.mi.
Cataloging Unit 20090000 -- Northwestern Hawaiian Islands.
Hawaii.
Area = < 10 sq.mi.
Region 21 Caribbean Region -- The drainage within: (a) the Commonwealth
of Puerto Rico; (b) the Virgin Islands of the United States;
and (c) other United States Caribbean outlying areas. Includes
land areas over which the United States has some degree of
interest, jurisdiction, or sovereignty.
Subregion 2101 -- Puerto Rico: The drainage and associated waters
within the Commonwealth of Puerto Rico.
Puerto Rico.
Area = 3480 sq.mi.
Accounting Unit 210100 -- Puerto Rico. Commonwealth of Puerto Rico.
Area = 3480 sq.mi.
Cataloging Units 21010001 -- Interior Puerto Rico.
Puerto Rico.
Area = 404 sq.mi.
21010002 -- Cibuco-Guajataca. Puerto Rico.
Area = 566 sq.mi.
21010003 -- Culebrinas-Guanajibo. Puerto Rico.
Area = 504 sq.mi.
21010004 -- Southern Puerto Rico.
Area = 851 sq.mi.
21010005 -- Eastern Puerto Rico.
Area = 1067 sq.mi.
21010006 -- Puerto Rican Islands.
Area = 92 sq.mi.
Subregion 2102 -- Virgin Islands: The drainage and associated waters
within the Virgin Islands of the United States.
U.S. Virgin Islands.
Area = 133 sq.mi.
Accounting Unit 210200 -- Virgin Islands. U.s. Virgin Islands.
Area = 133 sq.mi.
Cataloging Units 21020001 -- St. John-St. Thomas.
U.s. Virgin Islands.
Area = 51 sq.mi.
21020002 -- St. Croix. U.s. Virgin Islands.
Area = 82 sq.mi.
Subregion 2103 -- Caribbean Outlying Areas: The drainage and
associated waters within the Canal Zone, Navassa
Island, and Rancador and Serrana Banks.
Area = 650 sq.mi.
Accounting Unit 210300 -- Caribbean Outlying Areas.
Area = 650 sq.mi.
Cataloging Units 21030001 -- Canal Zone. Panama Canal Zone.
Area = 647 sq.mi.
21030002 -- Navassa. Navassa Island.
Area = 2 sq.mi.
21030003 -- Roncador-Serrana. Roncador and
Serrana Banks.
Area = < 1 sq.mi.
