U.S. Geological Survey 2008 raster digital data Reston, VA U.S. Geological Survey The Elevation Derivatives for National Applications (EDNA) dataset contained sub-watershed boundaries, called catchments. The SWA_HGA dataset used the catchment lines when adding boundary lines to a hydrogeological area boundary. http://water.usgs.gov/lookup/getspatial?sir2008-5239_swpa_hga Tim S. McKinney David W. Anning 2008 U.S. Geological Survey Scientific Investigations Report SIR 2008-5239 Salt Lake City U.S. Geological Survey This raster dataset represents the boundaries of the hydrogeologic areas of the Southwest Principal Aquifer (SWPA) study of the National Water Quality Assessment (NAWQA) program. It is a compilation of the pre-existing Hydrogeologic Areas of the Southwest Ground-Water Resources Project, with additional data from the Central and Coastal basins of California, Northern New Mexico Rio Grande Valley, and South Central Colorado San Luis Valley. This dataset was created for use by the Southwest Principal Aquifer study (SWPA) to help characterize conceptual models of case studied NAWQA alluvial basins as well as the possible natural and anthropogenic factors that may affect water quality. This dataset is a compilation from many sources, including the California Department of Water Resources, the Nevada State Engineer, the State of Utah Division of Information Technology Services, and U.S. Geological Survey Regional Aquifer-System Analysis reports and Water-Investigations reports for Arizona and New Mexico. 2000 2003 2004 ground condition Complete None planned -125.047253 -104.478499 44.763995 29.277380 ISO 19115 Topic boundaries geoscientificInformation none drainage basin alluvial basin watershed surface-water / ground-water interactions None Southwest United States Arizona California New Mexico Utah Great Basin southern California deserts Basin and Range Province Rio Grande Valley None These data are not intended to be used as a survey product and are for reference purposes only. Although this Federal Geographic Data Committee-compliant metadata file is intended to document the data set in nonproprietary form, as well as in ArcInfo format, this metadata file may include some ArcInfo-specific terminology. Acknowledgment of the U.S. Geological Survey would be appreciated in products derived from these data. U.S. Geological Survey, Utah Water Science Center Center Director mailing and physical address

2329 Orton Circle

Salt Lake City Utah 84119 USA 801-908-5000 801-908-5001 http://water.usgs.gov/GIS/browse/sir2008-5239_swpa_hga.jpg Illlustration of data set jpg Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog 9.3.1.1850 data were spot checked for attribute accuracy. No inconsistencies were observed. Complete for southwestern United States Existance of linework only was visually checked. Appropriate use of this data base is determined initially by the scale from which the data base was developed. Use this data with similarly-scaled data bases. Mixing scales could severly impact the accuracy of any calculations derived from this data. When mixing scales in any analysis, the final result is only as accurate as the smallest scale map used. These data are not to be used at scales greater than 1:250,000. California Interagency Watershed Mapping Committee California, Department of Water Resources California Department of Forestry and Fire Protection Tierra Data Systems State Water Resources Control Board California Department of Fish and Game State of California Stephen P. Teale Data Center GIS Solutions Group 20041118 2.2.1 vector digital data California Spatial Information Library 1.0 Sacramento, California State of California, California Resources Agency http://atlas.ca.gov/catalog/CaSpatialInformationLibrary/Calwater.html 1:24,000-scale online publication date ca_watershed Provided line work for California watersheds U.S. Geological Survey 2003 1.0 map Open-File Report USGS OFR 03-470 San Diego, CA U.S. Geological Survey http://water.usgs.gov/lookup/getspatial?ca_provinces U.S. Geological Survey 2003 1.0 Water Resources Investigations Report WRIR 03-4166 Sacramento, CA U.S. Geological Survey (accessed 12/9/03) http://water.usgs.gov/pubs/wri/wri034166/ 1:24,000-scale online Ca_province Provided line work for California provinces. California Department of Water Resources 20000822 vector digital data 1:250,000-scale 20020725 publication date ca_gwbsn Provided line work for California ground water basins U.S. Geological Survey 20030930 version 1.0, vector digital data U.S. Geological Survey Professional Paper Professional Paper 1702 Tucson, AZ U.S. Geological Survey Anning, D.W., Konieczki, A.D., 2005, Classification of hydrogeologic areas and hydrogeologic flow systems in the basin and range physiographic province, southwestern United States: U.S. Geological Survey Professional Paper 1702, 44 p., 2 sheets. Online_Linkage: http://pubs.usgs.gov/pp/2005/pp1702/ 1:250,000-scale online publication date swa_hga Line work for earlier hydrogeologic areas in the southwest. Acquired SW hydrogeologic areas from Arizona Water Science Center USGS swa_hga 200603 swa_hga Maps were printed, of the sw_hga basin boundaries, CA provences and watershed boundaries, plus the National Hydrography Dataset (NHD) derived stream lines to check for possible conflicts. 200603 Basin boundaries were modified in instances where the basin boundary would follow a stream line or otherwise not align with the NHD stream dataset, to produce a more hydrologically consistent drainage system. The vectors used to modify the basins were from the EDNA catchments coverage (See: http://edna.usgs.gov/watersheds/ for more information on the EDNA dataset). swa_hga edna 200603 sw_hga Analysis environment were set to common extent, mask, and cell size. Hydrogeologic area vector data were rasterized to 100 meter cell resolution. sw_hga Unknown sw_hga08 basin id and name updated to correct error. 20100520 Raster Grid Cell 14674 15569 1 Albers Conical Equal Area 29.500000 45.500000 -96.000000 23.000000 0.000000 0.000000 row and column 100.000000 100.000000 meters North American Datum of 1983 Geodetic Reference System 80 6378137.000000 298.257222 swpa_hga.vat Value attribute table ESRI Rowid Internal feature number. ESRI Sequential unique whole numbers that are automatically generated. VALUE unique number user defined 1 425 COUNT number of cells with value ESRI Automatically generated whole numbers. BASIN_ID Unique basin identification user defined 1 425 NAME Basin name user defined ORIG_ID The attribute ORIG-ID is used to keep the continuity betweenthe latest basin coverage and earlier ones user defined 1 425 U.S. Geological Survey Ask USGS -- Water Webserver Team mailing address

445 National Center

Reston VA 20192 USA 1-888-275-8747 (1-888-ASK-USGS) http://answers.usgs.gov/cgi-bin/gsanswers?pemail=h2oteam&subject=GIS+Dataset+sir2008-5239_swpa_hga Downloadable Data Although these data have 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. 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 these data, software, or related materials. The use of firm, trade, or brand names in this report is for identification purposes only and does not constitute endorsement by the U.S. Geological Survey. The names mentioned in this document may be trademarks or registered trademarks of their respective trademark owners. Winzip 4.977 http://water.usgs.gov/GIS/dsdl/SIR2008-5239_swpa_hga_updated.zip None. This dataset is provided by USGS as a public service. 20090205 U.S. Geological Survey REQUIRED: The person responsible for the metadata information. Ask USGS -- Water Webserver Team mailing address

455 National Center

Reston VA 20192 USA 1-888-275-8747 (1-888-ASK-USGS) http://water.usgs.gov/user_feedback_form.html FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998 local time