Tim S. McKinney 2008 vector digital data Reston, VA U.S. Geological Survey http://water.usgs.gov/lookup/getspatial?sir2008-5239_swpa_basin_stats Tim S. McKinney David W. Anning 2008 U.S. Geological Survey Scientific Investigations Report SIR 2008-5239 Salt Lake City, UT U.S. Geological Survey SWPA_alvbsn is a vector dataset of alluvial-fill basin statistics for the Southwest United States. Statistics for each basin include physical details such as area, landcover, elevation, slope and precipitation. Anthropogenic data for basin include landuse, population, and wateruse. This dataset was created for use by the Southwest Principal Aquifer (SWPA) study to help characterize conceptual models of case studied National Water-Quatlity Assessment (NAWQA) Program 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 Multi-Resolution Land Characteristics Consortium National Landcover Database, USGS Estimated Use of Water, Oak Ridge National Laboratory LandScan Global Population Database, EROS National Elevation Dataset, Spatial Climate Analysis Service PRISM precipitation data and USGS Hydrogeologic areas. 1992 geology 1995 NED 1996 geology 1997 geology 1997+ PRISM 2000 geology 2000 USGS Estimated Use of Water 2001 NLCD 2003 geology 2003 SWHGA 2005 LandScan ground condition Complete None planned -124.889549 -104.566268 44.627454 29.300033 ISO 19115 Topic Category climatologyMeteorologyAtmosphere elevation envrionment geoscientificInformation inlandWaters planningCadastre utilitiesCommunication None alluvial-fill basin land use land cover water use population None southwestern United States Arizona California Colorado Neveda New Mexico Utah Great Basin Basin and Range Province Rio Grande Valley southern California deserts 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 (FGDC) compliant metadata file is intended to document the data set in nonproprietary form, as well as ArcGIS format, this metadata file may include some ArcGIS-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_basin_stats.jpg Illlustration of data set jpg Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog 9.2.5.1450 Because Irrigation type and use data are not consistently available for the entire Southwest, no attempt was made to distribute water according to irrigation type. It is assumed that most agricultural crops in the SW are irrigated. Agricultural acreages, reported in USGS Estimated Use of Water, are taken from the U.S. Department of Agriculture (USDA) census of Agriculture. These estimates were used in this analysis rather than NLCD calculations. Census of Agriculture irrigated agricultural acreages are thought to provide a more accurate account of agricultural land use. Water use and acreage were distributed evenly over all NLCD agricultural land in a county. Thus, acreages and water may be distributed to some areas where NLCD agricultural land is misclassified by NLCD or may not be irrigated. Accuracy of agricultural land cover is assumed to be approximately the same as the NLCD Cultivated land cover, published accuracy estimates for Cultivated Land are 81%/79% (Errors of Omission/Commission). Reference: Homer, C., Huang, C., Yang, L., Wylie, B., Coan, M., 2004. Development of a 2001 National Landcover Database for the United States. Photogrammetric Engineering and Remote Sensing, Vol. 70, No. 7, July 2004, pp. 829-840. Disaggregated irrigated agriculture water use estimates were summed for counties and checked for accuracy against USGS county-based estimates. Population and public supply water use estimates were checked against various municipalities and available estimates. Due to the lack of large-scale public supply water use spatial data, public supply water was disaggregated over urban areas via per capita use rate. Urban areas are defined as greater than or equal to 386 persons per square kilometer. It is assumed that only and all urban areas use public supply water. Elevation derivatives are assumed as accurate as source DEMs. Geology is assumed as accurate as sources state geologic data. PRISM precipitation data accuracy report available at URL:http://prismclimate.org Chain-node topology present. Test of valid values were spot checked with various input datasets. No inconsistencies were observed. Complete for the southwestern United States. Tim S. McKinney Unpublished Material raster digital data SWPA geology is a 100-meter cell resolution raster dataset consisting of existing 1:750,000-scale surficial geology for California and 1:500,000-scale for Nevada and parts of Utah, Colorado, New Mexico, and Arizona. This data set was aggregated from a compilation of geologic maps as part of the Southwest Regional GAP Analysis Project along with California geology and the very southern portion of Oregon and Idaho geology. Tim S McKinney 2008 U.S. Geological Survey Scientific Investigations Report SIR-2008-5239 Salt Lake City, UT. U.S. Geological Survey http://pubs.usgs.gov/sir/2008/5239/ online 1992 1997 ground condition swpa_geo Provided the alluvial basin boundaries for the calculation of area and basin statistics. U.S. Geological Survey (USGS), EROS Data Center 1999 raster digital data Sioux Falls, SD U.S. Geological Survey http://ned.usgs.gov/ online 19990201 unknown publication date ned Provided elevation data and derivatives for basin statistics The PRISM Group at Oregon State University 1997+ raster digital data Corvallis, OR The PRISM Group at Oregon State University http://www.prism.oregonstate.edu/ online 19710101 20001231 ground condition prism Provided average annual basin precipitation statistics. Oak Ridge National Laboratory June 2006 LandScan 2005 raster digital data Oak Ridge, TN Oak Ridge National Laboratory License required for non Department of Defense users. http://www.ornl.gov/landscan/ online 2005 pop Provided population data for basin statistics Multi-Resolution Land Characteristics Consortium 20030901 1.0 raster digital data The MRLC Consortium is a partnership of federal agencies (www.mrlc.gov), consisting of the U.S. Geological Survey (USGS), the National Oceanic and Atmospheric Administration (NOAA), the U.S. Environmental Protection Agency (EPA), the U.S. Department of Agriculture (USDA), the U.S. Forest Service (USFS), the National Park Service (NPS), the U.S. Fish and Wildlife Service (FWS), the Bureau of Land Management (BLM) and the USDA Natural Resources Conservation Service (NRCS). http://www.mrlc.gov/ online 2001 ground condition nlcd Provided landuse / landcover information for wateruse and land area statistics. U.S. Geological Survey 2004 tabular digital data Circular 1268 U.S. Geological Survey Reston, VA U.S. Geological Survey http://water.usgs.gov/watuse/ online 2000 ground condition wateruse Proviced water use data for basin statistics. Selected quaterneray and late tertiary geology from swpa_geo to create swpa alluvial dataset. swpa_geo 2007 swpa_alv Populated basin names via spatial join with names from hydrogeologic areas. swpa_hga swpa_alv 0706 swpa_alv2 Calculated zonal statistics from source datasets for each basin and calculated mean, max, min and standard deviation. Sums for basins were calculated by multiplying basin mean values by the area of the basin. Individual basin statistic tables were cut and pasted together and joined to the alluvial basin-fill basin (swpa_alv2) dataset. swpa_alv2 2007 swpa_alvbsn Dataset updated to correct error in basin names, and modifications in alluvial basin geology. 20100618 15462900 Dataset copied. D:\absn\absn_stats_101618c 20100618 16291600 Vector G-polygon 422 Albers Conical Equal Area 29.500000 45.500000 -96.000000 23.000000 0.000000 0.000000 coordinate pair 0.000000 0.000000 meters North American Datum of 1983 Geodetic Reference System 80 6378137.000000 298.257222 Aluvial basin statistics of the Southwest Principal Aquifer (SWPA) study FID Internal feature number. ESRI Sequential unique whole numbers that are automatically generated. Shape Feature geometry. ESRI Coordinates defining the features. CODE Unique basin code User defined bsn_id absn_name Area_sq_me Basin area, square meters User defined Acres Basin area, acres User defined Area_sq_km Basin area, square kilometers User defined elev_MIN Basin elevation minimum, in feet. User defined elev_MAX Basin elevation maximum, in feet. User defined elev_MEAN Basin elevation mean, in feet. User defined elev_STD Basin elevation standard deviation, in feet. User defined ppt_min Basin average annual precipitation minimum, in inches User defined ppt_max Basin average annual precipitation maximum, in inches User defined ppt_mean Basin average annual precipitation, in inches User defined ppt_ft_yr Basin average annual precipitation, in feet per year. User defined ppt_acft Basin average annual precipitation, in acre-feet per year. User defined prcnt_ag Basin percent irrigated agland User defined prcnt_urb Basin percent urban User defined prcnt_rng Basin percent rangeland User defined bsn_pop Basin population User defined popd_km Basin population density, person per kilometer User defined pswu_gw_af Basin public supply ground water use, in acre-feet per User defined pswu_sw_af Basin publlic supply surface water use, in acre-feet per User defined pswu_af Basin public supply total water use, in acre-feet per use. User defined agir_spr_a Basin area sprinkler irrigated agland, in acres User defined agir_sur_a Basin area flood irrigated agland, in acres. User defined agir_ac Basin area total irrigated agland, in acres. User defined agir_gw_af Basin irrgated agland groundwater use, in acre-feet per User defined agir_sw_af Basin irrgated agland surface water use, in acre-feet per User defined agir_af Basin irrigated agland total water use, in acre-ft/per User defined Attribute_Definition Basin irrigated agland total water use, in ft/per User defined wu_gw_af Basin ag and ps ground water use, in acre-feet per year. User defined wu_sw_af Basin ag and ps surface water use, in acre-feet per year User defined wu_tot_af Basin ag and ps water use, in acre-feet per year. User defined 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_basin_stats 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 27.627 http://water.usgs.gov/GIS/dsdl/SIR2008-5239_swpa_basin_stats.shp_updated.zip None. This dataset is provided by USGS as a public service. 20100618 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://water.usgs.gov/user_feedback_form.html FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998