Hitt, K.J. 20060131 1.1 Map Reston, Virginia, USA U.S. Geological Survey http://water.usgs.gov/lookup/getspatial?nawqagencyc1 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 studied during the first decade of the NAWQA Program, from 1991-2001 ("cycle 1"). The coverage is intended only for drawing ILLUSTRATIONS, NOT for spatial analysis. The sources of this coverage were the full resolution NAWQA study unit coverage, which is available at http://water.usgs.gov/lookup/getspatial?nawqacyc1 and the coastline from a 1:2 million county coverage generalized for display at the scale of 1:34 million. 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 using the ARC RESELECT command by GROUP = 1, 2, or 3. The interior arcs (arcs not forming a coastline) were kept. The coastline arcs were deleted. The study unit arcs were combined with the coastline arcs from the coverage called COUNTY34M. (COUNTY34M is the 1:2 million DLG county boundaries generalized to 1:34 million for cartographic display.) The Study-Unit arcs were generalized using ARCEDIT GENERALIZE command. Most of the arcs were generalized to 6000 meters. Most of the coastline arcs were not changed from COUNTY34M. Some small islands and arcs resulting from generalizing the Study-Unit arcs were deleted. Many extraneous labels were deleted. The Study-Unit arcs were extended in places were they did not meet up with the coastline arcs. Polygon topology was built and labels were added where necessary (Any polygon that was not a NAWQA Study Unit was not in the "selected" set so did not have a label.) Islands in the Puget Sound, eastern coast, and southern coast were removed and cleaned up. Study-Unit boundaries and attributes are changed to keep pace with the NAWQA program. Reviews_Applied_to_Data: Every attempt is made to ensure that the generalized coverage matches the coverage of full resolution boundaries and that the coverage reflects the current state of the NAWQA Study-Unit boundaries, their starting dates and so forth. Related_Spatial_and_Tabular_Data_Sets: The full resolution coverage of cycle 1 NAWQA Study-Unit boundaries is available at http://water.usgs.gov/lookup/getspatial?nawqacyc1. 2001 Publication date. Complete This data set represents the final version of cycle 1 study unit boundaries that existed at the end of the first decade of study. The coverage was updated whenever the NAWQA Study-Unit boundaries or their attributes were changed or were refined. If a boundary changed, but the change was not significant enough to show in the display coverage, the display coverage was not updated. -127.849768 -65.379115 51.553303 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 1991-2001 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/cyc1_browse.gif This is an image of a national map showing the cycle 1 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 1.0 Vector digital data Reston, Virginia, USA U.S. Geological Survey http://water.usgs.gov/lookup/getspatial?nawqagencyc2 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 available. 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 data set contains NAWQA boundaries (excluding HPGW) for the conterminous United States. K. J. Hitt N. Nakagaki 1994 Map Reston, Virginia, USA U.S. Geological Survey http://water.usgs.gov/lookup/getspatial?nawqacyc1 2000000 Map 2001 Publication date nawqacyc1 The full resolution NAWQA Study-Unit boundaries that were generalized to form the current coverage. Expanded LERI 19941220 Removed part of LINJ Study-Unit that should not have been included as part of the study area (around LI). 19950316 Expanded SCTX. 19950321 Expanded UMIS, slightly modified REDN. 19950804 Changes to FY 97 Study-Units: ACAD, MOBL, MIAM, YELL. 19951017 Removed COKL and CHPL. Added Middle Arkansas (MARK) and Canadian-Cimarron (CACI). 19951026 Expanded MISE. 19960619 Study Units were divided into 4 groups resulting from the selection and prioritization of FY 97 Study Units. NNEB and SENE merged into NECB. Study Unit were renumbered to reflect merging of NNEB and SENE. 19960801 Removed Lake Okeechobee from SOFL. UTEN boundary change was so slight that it was not done to the generalized coverage. 19961209 Added REGION field. 19961210 Changed DLMV and YAKI from group 3 to group 4. 19970909 Changed to new Study Unit starting categories: Groups 1,2,3. Group 4 = YAKI, DLMV. Group 5 = KNTY, UARK, CHEY. Group 6 = CACI, NPLT, MARK, SHPL, KANS. Group 7 = CNBR. Boundaries unchanged. 19980601 Minor change to SANA boundary. 19990701 CHANGED HORIZONTAL DATUM FROM NAD27 TO NAD83. 19990701 Version 1.1 - Changed back to 4 main NAWQA groups: group 1 (studied 1991-95), group 2 (studied 1994-98), group 3 (studied 1997-2001), and group 4 (not scheduled for study during cycle 1 of NAWQA). We no longer need to distinguish which Study Units overlap the High Plains. Removed items G5BND, G6BND, G7BND from arc attribute table. Added item ACTUALLY_STUDIED to polygon attribute table. 20020816 Fixed 1 arc miscoded as G2BND. Coded annotation $level to match Study-Unit group. 20021017 Changed NAME field to be 50 characters instead of 40 characters to match other NAWQA boundary coverages. Revised names to match those in USGS Fact Sheet 071-01. (http://water.usgs.gov/pubs/FS/fs-071-01/pdf/fs07101.pdf.) 20021202 Removed pseudo nodes. Calculated cover-id equal to cover# - 1. 20021203 Changed name of ACTUALLY_STUDIED to STUDIED. 20021203 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 255 Label point 105 GT-polygon composed of chains 105 Point 60 Label point 58 Albers Conical Equal Area 29.500000 45.500000 -96.000000 23.000000 0.000000 0.000000 coordinate pair 0.002334 0.002334 meters North American Datum of 1983 GRS1980 6378137.000000 298.257222 NAWQAGENCYC1.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 NAWQAGENCYC1# Internal feature number Computed Sequential unique positive integer n/a GIS software NAWQAGENCYC1-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 G4BND Flag for group 4 boundaries NAWQA 1,0 1=group 4 boundary; 0=not group 4 boundary User assigned SUBND Flag for Study-Unit boundaries NAWQA 0,1 1=Study-Unit boundary User assigned NAWQAGENCYC1.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 NAWQAGENCYC1# Internal feature number Computed Sequential unique positive integer Coverage number GIS software NAWQAGENCYC1-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 1,2,3,4,0 1= studied 1991-95; 2= studied 1994-98; 3= studied 1997-2001; 4= Not scheduled; 0= Not a NAWQA Study Unit. User assigned PILOT Flag for Pilot study NAWQA 1,0 1=pilot study; 0=not pilot study User assigned SUID 4-letter abbreviation for Study Unit NAWQA program See table 1. See overview description User assigned INTL flags polygons in Canada (REDN,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. STUDIED Flag for whether NAWQA Study Unit was actually studied during cycle 1 of NAWQA (1991-2001). USGS Y,N Flag for whether the Study Unit was actually studied or not during cycle 1 of NAWQA. Y = was studied during cycle 1 (that is, group = 1,2,3). N = was not studied during cycle 1 (group = 4). Blank = was not a designated Study Unit (group = 0). User assigned There are two attribute files associated with this coverage. An arc attribute table (.AAT): >DATAFILE NAME: NAWQAGENCYC1.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 NAWQAGENCYC1# 4 5 B - >25 NAWQAGENCYC1-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 - >35 G4BND 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 >arcs representing group 4 Study-Unit boundaries are flagged G4BND = 1 AND a polygon attribute table: >DATAFILE NAME: NAWQAGENCYC1.PAT >COL ITEM NAME WIDTH OUTPUT TYPE N.DEC ALTERNATE NAME >01 AREA 4 12 F 3 >05 PERIMETER 4 12 F 3 >09 NAWQAGENCYC1# 4 5 B - >13 NAWQAGENCYC1-ID 4 5 B - >17 NAWQA 4 4 I - >21 NAME 62 62 C - >83 GROUP 2 2 I - >85 PILOT 1 1 I - >86 SUID 4 4 C - ABBV >90 INTL 1 1 I - CANADA >91 RANK 1 1 I - >92 REGION 1 1 C - >93 STUDIED 1 1 C - 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 = Assessed during 1991-1995 >Group 2 = Assessed during 1994-1998. >Group 3 = Assessed during 1997-2001. (Includes DLMV and YAKI, > which started in 1999.) >Group 4 = Not scheduled for study during cycle 1. (KNTY, > UARK, CHEY, CACI, NPLT, MARK, SHPL, KANS). PILOT flags those polygons that were pilot projects, although the boundaries of the pilot projects were not maintained in this coverage. (For example, COKL boundaries were replaced when CACI was delineated.) 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, G3BND, and G4BND 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 STUDIED is a flag for whether the Study Unit was actually studied during cycle 1 of NAWQA (1991-2001). >Y = actually studied during cycle 1 >N = not studied during cycle 1 >Blank = was not designated as a Study Unit during cycle 1 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) >ALMN Allegheny and Monongahela River Basins ( 9) >CACI Canadian-Cimarron River Basins (32) >CAZB Central Arizona Basins (49) >CCPT Central Columbia Plateau (50) >CHEY Cheyenne-Belle Fourche River Basins (42) >CNBR Central Nebraska Basins (35) >CONN Connecticut, Housatonic and Thames River Basins ( 2) >DELR Delaware River Basin ( 5) >DLMV Delmarva Peninsula ( 7) >EIWA Eastern Iowa Basins (30) >GAFL Georgia-Florida Coastal Plain (23) >GRSL Great Salt Lake Basins (47) >HDSN Hudson River Basin ( 3) >KANA Kanawha - New River Basins (10) >KANS Kansas River Basin (36) >KNTY Kentucky River Basin (25) >LERI Lake Erie - Lake Saint Clair Drainages (11) >LINJ Long Island - New Jersey Coastal Drainages ( 4) >LIRB Lower Illinois River Basin (15) >LSUS Lower Susquehanna River Basin ( 6) >LTEN Lower Tennessee River Basin (29) >MARK Middle Arkansas River Basin (38) >MIAM Great and Little Miami River Basins (12) >MISE Mississippi Embayment (27) >MOBL Mobile River Basin (26) >NECB New England Coastal Basins ( 1) >NPLT North Platte River Basin (41) >NROK Northern Rockies Intermontane Basins (46) >NVBR Las Vegas Valley Area and the Carson and Truckee River Basins (55) >OZRK Ozark Plateaus (31) >POTO Potomac River Basin ( 8) >PUGT Puget Sound Basin (52) >REDN Red River of the North Basin (18) >RIOG Rio Grande Valley (45) >SACR Sacramento River Basin (54) >SANA Santa Ana Basin (57) >SANJ San Joaquin-Tulare Basins (56) >SANT Santee River Basin and Coastal Drainages (21) >SCTX South-Central Texas (34) >SHPL Southern High Plains (39) >SOFL Southern Florida (24) >SPLT South Platte River Basin (40) >TRIN Trinity River Basin (33) >UARK Upper Arkansas River Basin (37) >UCOL Upper Colorado River Basin (44) >UIRB Upper Illinois River Basin (14) >UMIS Upper Mississippi River Basin (17) >USNK Upper Snake River Basin (48) >UTEN Upper Tennessee River Basin (20) >WHIT White River Basin (13) >WILL Willamette Basin (53) >WMIC Western Lake Michigan Drainages (16) >YAKI Yakima River Basin (51) >YELL Yellowstone River Basin (43) >----------------------------------------------------------------------- > Hawaii and Alaska (not included in this data set) >----------------------------------------------------------------------- > OAHU Island of Oahu (58) > COOK Cook Inlet Basin (59) >----------------------------------------------------------------------- > 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) >$level = 4 (group 4 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/nawqagencyc1_shp.zip Export Arc/INFO Export file zipped 1 http://water.usgs.gov/GIS/dsdl/nawqagencyc1.e00.gz Shape Shape file zipped 1 http://water.usgs.gov/GIS/dsdl/nawqagencyc1.tar.gz None. This dataset is provided by USGS as a public service. 20060130 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://answers.usgs.gov/cgi-bin/gsanswers?pemail=h2oteam&subject=GIS+Dataset+nawqagencyc1 FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998