Hitt, K.J. 20060131 Version 1.0 map Reston, Virginia, USA U.S. Geological Survey http://water.usgs.gov/lookup/getspatial?nawqagencyc2 This is a GENERALIZED version of the boundaries and codes used for the U.S. Geological Survey's National Water-Quality Assessment (NAWQA) Program Study-Unit investigations in the conterminous United States, excluding the High Plains Regional Ground-Water Study. The data set represents the areas to be studied during the second decade of the NAWQA Program, from 2001-2012 ("cycle 2"). The coverage is intended only for drawing ILLUSTRATIONS, NOT for spatial analysis. This coverage is used to DISPLAY the location of NAWQA study units at the national scale in illustrations that do not require high resolution detail. The lower resolution clears up the linework along the coastline and speeds up display. This coverage is NOT to be used for spatial analysis. Procedures_Used: The NAWQA Study-Unit boundaries were selected from the full resolution NAWQA coverage and were generalized using ARCEDIT GENERALIZE command. Most of the arcs were generalized to 6000 meters. Related_Spatial_and_Tabular_Data_Sets: The full resolution coverage of cycle 2 NAWQA Study-Unit boundaries is available at http://water.usgs.gov/lookup/getspatial?nawqacyc2. 200212 Publication date. Complete This data set represents the initial version of cycle 2 study unit boundaries that exist at the start of the second decade of study. The CCYK boundary is expected to change slightly. -127.849844 -65.379042 51.553462 23.254474 None National Water-Quality Assessment NAWQA Water quality Surface water Ground water River basin Aquifer system Study Unit boundary inlandWaters None conterminous United States None None None 2001-2012 None The data is for display only, as explained above. Kerie J. Hitt USGS mailing address

12201 Sunrise Valley Drive, MS-413

Reston VA 20192 USA 1-888-275-8747 703-648-6693 kjhitt@usgs.gov 9:00am-5:30pm EST Please contact thru email http://water.usgs.gov/nawqa/map/cyc2_browse.gif This is an image of a national map showing the cycle 2 NAWQA Study Unit boundaries. GIF Microsoft Windows XP Version 5.1 (Build 2600 Service Pack 1); ARC/INFO version 9.0 Hitt, K.J. 20060131 1.1 Vector digital data Reston, Virginia, USA U.S. Geological Survey http://water.usgs.gov/lookup/getspatial?nawqagencyc1 Hitt, K.J. Nakagaki, N. 20060131 6.1 Vector digital data Reston, Virginia, USA U.S. Geological Survey http://water.usgs.gov/lookup/getspatial?nawqacyc1 Hitt, K.J. Nakagaki, N. 20060131 1 Vector digital data Reston, Virginia, USA U.S. Geological Survey http://water.usgs.gov/lookup/getspatial?nawqacyc2 They reflect the most current information to date. See Explanation This is described, where present, with each field defined in the Entity and Attribute Section. The data set was checked for topological consistency using the Arc/INFO commands BUILD and LABELERRORS. The NAWQA polygon attribute is no longer consecutive because of study units that have merged (e.g. WHIT and MIAM) and study units that have been deleted. The data set contains NAWQA boundaries (excluding HPGW) for the conterminous United States. Hitt, K.J. Nakagaki, N. 19990830 map Reston, Virginia, USA U.S. Geological Survey http://water.usgs.gov/lookup/getspatial?nawqagencyc1 34000000 Map 1999 Publication date nawqagencyc1 Generalized cycle 1 NAWQA Study-Unit boundaries and feature attributes that served as the initial source of the generalized cycle 2 NAWQA Study-Unit boundaries and attributes. Made a copy of the source coverage "nawqagencyc1" (description above) 1999 1. Dissolved boundaries between: -WHIT and MIAM to create new merged study unit, WHMI -LTEN and UTEN to create new merged study unit, TENN 2. Added and populated polygon attributes, NEWSUID and NEWGROUP 200005 1. Updated line attributes to reflect the 3 new groups of study units. 200005 1. Updated several full study units names and abbreviations. 2. Added and populated arc attribute, GXBND, to uniquely identify LSUS (only study unit with selective surface-water monitoring) 3. Coded NEWGROUP = 'X' for LSUS polygon. 200011 Replaced SOCA's (formerly SANA) boundary with new boundary provided by JoAnn Gronberg. The study unit has been extended in the northern section. 200012 Revised the polygon attribute table and arc attribute table to more closely match those of NAWQAGENCYC1 coverage. Changed values of NAWQA groups from 01, 04, 07, 09, and X to: 1 (group 1 scheduled to be studied 2001-05), 2 (group 2 scheduled to be studied 2004-08), 3 (group 3 scheduled to be studied 2007-2011). Deleted Study Units never studied during cycle 1 and discontinued for cycle 2 - CHEY, KNTY, MARK, NPLT, SHPL, UARK. Deleted Study Units studied during cycle 1 but discontinued for study during cycle 2 of NAWQA - ALMN, KANA, LSUS, NROK, REDN). Removed group 4 attributes - deleted G4BND item from .aat and deleted annotation. Revised names to match those in USGS Fact Sheet 071-01. http://water.usgs.gov/pubs/FS/fs-071-01/pdf/fs07101.pdf. Coded annotation $level to match Study Unit group. Removed pseudo nodes. Calculated cover-id equal to cover# - 1. 200212 Changed names of study units to match those in USGS Circular 1265. (http://pubs.usgs.gov/circ/2004/1265/) Changed NAME field to be 62 characters. 20060127 Vector Complete chain 201 Label point 87 GT-polygon composed of chains 87 Point 60 Label point 43 Albers Conical Equal Area 29.5 45.5 -96 23 0.00000 0.00000 coordinate pair 0.002334 0.002334 Meters North American Datum of 1983 GRS1980 6378137.000000 298.257222 NAWQAGENCYC2.AAT Arc Attribute Table NAWQA FNODE# Internal number of from-node Computed Sequential unique positive integer n/a GIS software TNODE# Internal number of to-node Computed Sequential unique positive integer n/a GIS software LPOLY# Internal number of polygon to left of arc Computed Sequential unique positive integer n/a GIS software RPOLY# Internal number of polygon to right of arc Computed Sequential unique positive integer n/a GIS software LENGTH Length of arc in coverage units Computed Positive real numbers n/a GIS software NAWQAGENCYC2# Internal feature number Computed Sequential unique positive integer n/a GIS software NAWQAGENCYC2-ID User-assigned feature number User-defined Integer n/a GIS software USBND Flag for US boundary NAWQA 1,0 1=US boundary; 0=not US boundary User assigned INTL Flag for arcs in Canada or Mexico NAWQA 1,0 1=Canada or Mexico arc; 0=US arc User assigned G1BND Flag for group 1 boundaries NAWQA 1,0 1=group 1 boundary; 0=not group 1 boundary User assigned G2BND Flag for group 2 boundaries NAWQA 1,0 1=group 2 boundary; 0=not group 2 boundary User assigned G3BND Flag for group 3 boundaries NAWQA 1,0 1=group 3 boundary; 0=not group 3 boundary User assigned SUBND Flag for Study-Unit boundaries NAWQA 0,1 1=Study-Unit boundary User assigned NAWQAGENCYC2.PAT Polygon Attribute Table GIS software AREA Area of polygon in square coverage units Computed Positive real numbers n/a GIS software PERIMETER Perimeter of polygon in coverage units Computed Positive real numbers n/a GIS software NAWQAGENCYC2# Internal feature number Computed Sequential unique positive integer Coverage number GIS software NAWQAGENCYC2-ID User-assigned feature number User-defined Integer Coverage id GIS software NAWQA Assigned NAWQA Study-Unit number NAWQA program 1-57, 0, 9999 Loosely based on WRD region User assigned; 9999 = Great Lakes NAME Name of Study Unit NAWQA NAWQA Study-Unit names See list under overview description User assigned GROUP Code for starting date for Study Unit NAWQA program 1,2,3,0 1= to be studied 2001-05; 2= to be studied 2004-08; 3= to be studied 2007-2011; 0= Not a NAWQA Study Unit. User assigned SUID 4-letter abbreviation for Study Unit NAWQA program See table 1. See overview description User assigned INTL flags polygons in Canada (PUGT,CONN) or Mexico (CAZB) NAWQA 1,0 1=in Canada or Mexico; 0=not in Canada or Mexico User assigned RANK flags larger polygons that can be labeled NAWQA 1,2,0 1,2 = display polygon label; 0=do not label User assigned for specific applications REGION USGS water-resources administrative region USGS N, S, C, W USGS Water Resources Division administrative region: N=northeastern; S=southeastern; C=central; W=western User assigned. MRB Major River Basin USGS 1 (New England and Mid-Atlantic), 2 (South Atlantic-Gulf and Tennessee), 3 (Great Lakes, Ohio, Upper Mississippi, and Souris-Red-Rainy), 4 (Missouri), 5 (Lower Mississippi, Arkansas-White-Red, and Texas-Gulf), 6 (Rio Grande, Colorado, and Great Basin), 7 (Pacific Northwest), 8 (California) NAWQA Major River Basin used for regional synthesis User assigned. There are two attribute files associated with this coverage. An arc attribute table (.AAT): DATAFILE NAME: NAWQAGENCYC2.AAT 9 ITEMS: STARTING IN POSITION 1 COL ITEM NAME WDTH OPUT TYP N.DEC 01 FNODE# 4 5 B - 05 TNODE# 4 5 B - 09 LPOLY# 4 5 B - 13 RPOLY# 4 5 B - 17 LENGTH 4 12 F 3 21 NAWQAGENCYC2# 4 5 B - 25 NAWQAGENCYC2-ID 4 5 B - 29 USBND 1 1 I - 30 INTL 1 1 I - 31 SUBND 1 1 I - 32 G1BND 1 1 I - 33 G2BND 1 1 I - 34 G3BND 1 1 I - where: arcs representing the U.S. boundary are flagged USBND = 1 arcs representing Study-Unit boundaries in Canada or Mexico are flagged CANADA = 1 arcs representing Study-Unit boundaries are flagged SUBND = 1 arcs representing group 1 Study-Unit boundaries are flagged G1BND = 1 arcs representing group 2 Study-Unit boundaries are flagged G2BND = 1 arcs representing group 3 Study-Unit boundaries are flagged G3BND = 1 AND a polygon attribute table: DATAFILE NAME: NAWQAGENCYC2.PAT COL ITEM NAME WIDTH OUTPUT TYPE N.DEC ALTERNATE NAME 01 AREA 4 12 F 3 05 PERIMETER 4 12 F 3 09 NAWQAGENCYC2# 4 5 B - 13 NAWQAGENCYC2-ID 4 5 B - 17 NAWQA 4 4 I - 21 NAME 50 50 C - 83 GROUP 2 2 I - 85 SUID 4 4 C - ABBV 89 INTL 1 1 I - CANADA 90 RANK 1 1 I - 91 REGION 1 1 C - 92 MRB 1 1 I - NAWQA is the Study-Unit number, which is a sequential number from 1-57. The numbers originally were based on administrative regions, but are not anymore. See table 1. NAME contains the full name of the Study Unit. See table 1. GROUP represents the assessment schedule of Study-Unit investigations: Group 1 = To be assessed during 2001-2005 Group 2 = To be assessed during 2004-2008. Group 3 = To be assessed during 2007-2011. SUID contains the 4-letter abbreviation for the Study Unit. The alternate name is ABBV. See table 1. INTL flags those polygons located in Canada or Mexico. Usually polygons outside of the United States are NOT plotted on national displays of the boundaries. INTL is in both the .AAT and the .PAT and is used primarily for plotting purposes. (USBND, SUBND, G1BND, G2BND, and G3BND are in the .AAT and are also used for plotting.) RANK is a working field for labeling the larger polygons. REGION is the USGS water resources administrative region: N = Northeast S = Southeast C = Central W = Western MRB is Major River Basin. Now called Surface-Water Region , the MRBs are the basis for regional synthesis in cycle 2 of the NAWQA program. Table 1.--NAWQA 4-letter abbreviations (SUID), names (NAME), and numbers (NAWQA). SUID NAME (NAWQA NUMBER) ACAD Acadian-Pontchartrain Drainages (28) ACFB Apalachicola-Chattahoochee-Flint River Basin (22) ALBE Albemarle-Pamlico Drainage Basin (19) CACI Canadian-Cimarron River Basins (32) CAZB Central Arizona Basins (49) CCYK Central Columbia Plateau - Yakima River Basin (50) CNBR Central Nebraska Basins (35) CONN Connecticut, Housatonic and Thames River Basins ( 2) DELR Delaware River Basin ( 5) EIWA Eastern Iowa Basins (30) GAFL Georgia-Florida Coastal Plain (23) GRSL Great Salt Lake Basins (47) HDSN Hudson River Basin ( 3) KANS Kansas River Basin (36) LERI Lake Erie - Lake Saint Clair Drainages (11) LINJ Long Island - New Jersey Coastal Drainages ( 4) LIRB Lower Illinois River Basin (15) MISE Mississippi Embayment (27) MOBL Mobile River Basin (26) NECB New England Coastal Basins ( 1) NVBR Las Vegas Valley Area and the Carson and Truckee River Basins (55) OZRK Ozark Plateaus (31) PODL Potomac River Basin and Delmarva Peninsula ( 8) PUGT Puget Sound Basin (52) RIOG Rio Grande Valley (45) SACR Sacramento River Basin (54) SANJ San Joaquin-Tulare Basins (56) SANT Santee River Basin and Coastal Drainages (21) SCTX South-Central Texas (34) SOCA Southern California Coastal Drainages (57) SOFL Southern Florida (24) SPLT South Platte River Basin (40) TENN Tennessee River Basin (29) TRIN Trinity River Basin (33) UCOL Upper Colorado River Basin (44) UIRB Upper Illinois River Basin (14) UMIS Upper Mississippi River Basin (17) USNK Upper Snake River Basin (48) WHMI White, Great and Little Miami River Basins (13) WILL Willamette Basin (53) WMIC Western Lake Michigan Drainages (16) YELL Yellowstone River Basin (43) ----------------------------------------------------------------------- High Plains (not included in this data set) ----------------------------------------------------------------------- HPGW HIGH PLAINS REGIONAL GROUND WATER STUDY The coverage also contains annotation showing the 4-letter Study-Unit abbreviations. Annotation codes: $level = 1 (group 1 abbreviations) $level = 2 (group 2 abbreviations) $level = 3 (group 3 abbreviations) Not Available U.S. Geological Survey Ask USGS - Water Webserver Team mailing

445 National Center

Reston VA 20192 1-888-275-8747 (1-888-ASK-USGS) http://water.usgs.gov/user_feedback_form.html Although this data set has been used by the U.S. Geological Survey, U.S. Department of the Interior, no warranty expressed or implied is made by the U.S. Geological Survey as to the accuracy of the data and related materials. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the U.S. Geological Survey in the use of this data, software, or related materials. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Shape ESRI Shape file ZIP 1 http://water.usgs.gov/GIS/dsdl/nawqagencyc2_shp.zip Shape ESRI Shape file tar, gunzip 1 http://water.usgs.gov/GIS/dsdl/nawqagencyc2.tar.gz Export Arc/INFO Export file zipped 1 http://water.usgs.gov/GIS/dsdl/nawqagencyc2.e00.gz None. This dataset is provided by USGS as a public service. 20060130 U.S. Geological Survey Ask USGS -- Water Webserver Team mailing

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Reston VA 20192 1-888-275-8747 (1-888-ASK-USGS) http://answers.usgs.gov/cgi-bin/gsanswers?pemail=h2oteam&subject=GIS+Dataset+nawqagencyc2 FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998