0101 St. John River Basin 0102 Penobscot River Basin 0103 Kennebec River Basin 0104 Androscoggin River Basin 0105 Maine Coastal 0106 Saco 0107 Merrimack River Basin 0108 Connecticut 0109 Massachusetts-Rhode Island Coastal 0110 Connecticut Coastal 0111 St. Francois 0201 Richelieu 0202 Upper Hudson 0203 Lower Hudson-Long Island 0204 Delaware 0205 The Susquehanna River Basin 0206 Upper Chesapeake 0207 Potomac 0208 Lower Chesapeake 0301 Chowan-Roanoke 0302 Neuse-Pamlico 0303 Cape Fear 0304 Pee Dee 0305 Edisto-Santee 0306 Ogeechee-Savannah 0307 Altamaha-St. Marys 0308 St. Johns 0309 Southern Florida 0310 Peace-Tampa Bay 0311 Suwannee 0312 Ochlockonee 0313 Apalachicola 0314 Choctawhatchee-Escambia 0315 The Alabama River Basin 0316 Mobile-Tombigbee 0317 Pascagoula 0318 The Pearl River Basin 0401 Western Lake Superior 0402 Southern Lake Superior-Lake Superior 0403 Northwestern Lake Michigan 0404 Southwestern Lake Michigan 0405 Southeastern Lake Michigan 0406 Northeastern Lake Michigan-Lake Michigan 0407 Northwestern Lake Huron 0408 Southwestern Lake Huron-Lake Huron 0409 The St. Clair And Detroit River Basins 0410 Western Lake Erie 0411 Southern Lake Erie 0412 Eastern Lake Erie-Lake Erie 0413 Southwestern Lake Ontario 0414 Southeastern Lake Ontario 0415 Northeastern Lake Ontario-Lake Ontario-St. Lawrence 0501 The Allegheny River Basin 0502 The Monongahela River Basin 0503 The Ohio River Basin 0504 The Muskingum River Basin 0505 The Kanawha River Basin 0506 The Scioto River Basin 0507 The Big Sandy And Guyandotte River Basins 0508 The Great Miami River Basin 0508 The Great Miami River Basin 0509 The Ohio River Basin 0510 The Licking and Kentucky River Basins 0511 The Green River Basin 0512 The Wabash River Basin 0513 The Cumberland River Basin 0514 The Ohio River Basin 0601 Upper Tennessee 0602 Middle Tennessee-Hiwassee 0603 Middle Tennessee-Elk 0604 Lower Tennessee 0701 Mississippi Headwaters 0702 The Minnesota River Basin 0703 The St. Croix River Basin 0704 Upper Mississippi-Black-Root 0705 The Chippewa River Basin 0706 Upper Mississippi-Maquoketa-Plum 0707 The Wisconsin River Basin 0708 Upper Mississippi-Iowa-Skunk-Wapsipinicon 0709 The Rock River Basin 0710 The Des Moines River Basin 0711 Upper Mississippi-Salt 0712 The Illinois River Basin 0713 The Illinois River Basin 0714 Upper Mississippi-Kaskaskia-Meramec 0801 Lower Mississippi-Hatchie 0802 Lower Mississippi-St. Francis 0803 Lower Mississippi-Yazoo 0804 Lower Red-Ouachita 0805 The Boeuf and Tensas River Basins 0806 Lower Mississippi-Big Black 0807 Lower Mississippi-Lake Maurepas 0808 Louisiana Coastal 0809 Lower Mississippi 0901 The Souris River Basin 0902 The Red River Basin 0903 The Rainy River Basin 1001 The Saskatchewan River Basin 1002 Missouri Headwaters 1003 Missouri-Marias 1004 Missouri-Musselshell 1005 The Milk River Basin 1006 Missouri-Poplar 1007 Upper Yellowstone 1008 The Big Horn River Basin 1009 The Powder and Tongue River Basins 1010 The Yellowstone River Basin 1011 Missouri-Little Missouri 1012 The Cheyenne River Basin 1013 Missouri-Oahe 1014 Missouri-White 1015 The Niobrara River Basin 1016 The James River Basin 1017 Missouri-Big Sioux 1018 The North Platte River Basin 1019 The South Platte River Basin 1020 The Platte River Basin 1021 The Loup River Basin 1022 The Elkhorn River Basin 1023 Missouri-Little Sioux 1024 Missouri-Nishnabotna 1025 The Republican River Basin 1026 The Smoky Hill River Basin 1027 The Kansas River Basin 1028 The Chariton, Grand, and Little Chariton River Basins 1029 The Gasconade and Osage River Basins 1030 The Missouri River Basin 1101 The White River Basin 1102 The Arkansas River Basin 1103 The Arkansas River Basin 1104 The Cimarron River Basin 1105 The Cimarron River Basin 1106 Arkansas-Keystone 1107 The Neosho and Verdigris River Basins 1108 The Canadian River Basin 1109 Lower Canadian 1110 The North Canadian River Basin 1111 The Arkansas River Basin 1112 Red Headwaters 1113 Red-Washita 1114 Red-Sulphur 1201 The Sabine River Basin 1202 The Neches River Basin 1203 The Trinity River Basin 1204 Galveston Bay-San Jacinto 1205 Brazos Headwaters 1206 Middle Brazos 1207 Lower Brazos 1208 The Colorado River Basin 1209 Lower Colorado-San Bernard Coastal 1210 Central Texas Coastal 1211 Nueces-Southwestern Texas Coastal 1301 Rio Grande Headwaters 1302 Rio Grande-Elephant Butte 1303 Rio Grande-Mimbres 1304 Rio Grande-Amistad 1305 Rio Grande Closed Basins 1306 The Pecos River Basin 1307 Lower Pecos 1308 Rio Grande-Falcon 1309 Lower Rio Grande 1401 Colorado Headwaters 1402 The Gunnison River Basin 1403 Upper Colorado-Dolores 1404 Great Divide-Upper Green 1405 The White and Yampa River Basins 1406 The Green River Basin 1407 Upper Colorado-Dirty Devil 1408 The San Juan River Basin 1501 Lower Colorado-Lake Mead 1502 The Little Colorado River Basin 1503 Lower Colorado 1504 The Gila River Basin 1505 The Gila River Basin 1506 The Salt River Basin 1507 The Gila River Basin 1508 Sonora 1601 The Bear River Basin 1602 The Great Salt Lake Basin 1603 The Escalante Desert and The Sevier Lake Closed Basins 1604 Black Rock Desert-Humboldt 1605 Central Lahontan 1606 Central Nevada Desert Basins 1701 The Kootenai, Pend Oreille, and Spokane River Basins 1702 The Columbia River Basin 1703 The Yakima River Basin 1704 The Snake River Basin 1705 The Snake River Basin 1706 Lower Snake 1707 The Columbia River Basin 1708 The Columbia River Basin 1709 The Willamette River Basin 1710 Oregon-Washington Coastal 1711 Puget Sound 1712 Oregon Closed Basins 1801 Klamath-Northern California Coastal 1802 The Sacramento River Basin 1803 Tulare-Buena Vista Lakes 1804 The San Joaquin River Basin 1805 San Francisco Bay 1806 Central California Coastal 1807 Southern California Coastal 1808 North Lahontan 1809 Northern Mojave-Mono Lake 1810 Southern Mojave-Salton Sea 1901 Southeast Alaska 1902 South Central Alaska 1903 Southwest Alaska 1904 Yukon 1905 Northwest Alaska 1906 Arctic Slope 2001 Hawaii 2002 Maui 2003 Kahoolawe 2004 Lanai 2005 Molokai 2006 Oahu 2007 Kauai 2008 Niihau 2009 Northwestern Hawaiian Islands 2101 Puerto Rico 2102 Virgin Islands 2103 Caribbean Outlying Areas