Stamos, C.L, Huff, J.A., Predmore, S.K., and Clark, D.A. 2004 vector digital data Open-File Report SIR 2004-5187 Sacramento, California U.S. Geological Survey http://water.usgs.gov/lookup/getspatial?cont2004 The Mojave River and Morongo ground-water basins are in the southwestern part of the Mojave Desert in southern California. Ground-water from these basins supplies a major part of the water requirements for the region. The continuous population growth in this area has resulted in ever-increasing demands on local ground-water resources. The collection and interpretation of ground-water data helps local water districts, military bases, and private citizens gain a better understanding of the ground-water flow systems, and consequently, water availability. This data set is a digital representation of the contours presented on the map published in 2004, Regional Water Table (2004) and Ground-Water-Level Changes in the Mojave River and the Morongo Ground-Water Basins, Southwestern Mojave Desert, California, by Stamos and others, U.S. Geological Survey SIR 2004-5187, and make the data available for use with geographic information systems. The Mojave River and the Morongo Ground-Water Basins are in the Mojave Desert region. The rapid growth in population in these basins, which is due, in part, to their proximity to Los Angeles, has increased the demand for water. Increased pumping to meet the needs of an increasing resident population has resulted in ground-water overdraft in parts of the ground-water basin (Stamos and others 2004). 2004 publication date Complete None planned -117.663376 -116.058686 35.053578 34.114644 ISO 19115 Topic Category inlandWaters inland waters water table water level contours drainage basin ground water ground-water groundwater hydrology levels USGS none Morongo Mojave Desert Southern California California San Bernardino County None These data should not be used at scales larger than 1:100,000. U.S. Geological Survey Steven K. Predmore Geographer mailing address

4165 Spruance Road, Suite 200

San Diego CA 92101 USA 1-888-275-8747 (1-888-ASK-USGS) spredmor@usgs.gov http://water.usgs.gov/GIS/browse/contours2004.png groundwater contours 2004 png Compilation of this data set and the associated metadata was funded in cooperation with the Mojave Water Agency. Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog 9.3.0.1770 Stamos, C.L, Huff, J.A., Predmore, S.K., and Clark, D.A. 2004 map Scientific Investigations Report SIR 2004-5187 Chain-node topology present. This data set includes all the 2004 water-table elevation contours published on SIR 2004-5187. A tiff file was obtained from the original Adobe Illustrator file use to create the original map. The tiff file was then georeferenced using known township corners. The contours were then digitized from the georeferenced tiff. 2004 The contours were edited to add the Line_type field and the WL field. 2004 Metadata imported. mojavemetadata2004.txt 20090429 13271400 Vector String 76 String 76 Universal Transverse Mercator 11 0.999600 -117.000000 0.000000 500000.000000 0.000000 coordinate pair 0.000001 0.000001 meters North American Datum of 1983 Geodetic Reference System 80 6378137.000000 298.257222 Mean sea level 0.000010 feet Explicit elevation coordinate included with horizontal coordinates Cont2004 Shapefile Attribute Table ESRI FID Internal feature number. ESRI Sequential unique whole numbers that are automatically generated. Shape Feature geometry. ESRI Coordinates defining the features. WL water level in feet above sea level author wlevel water level from field measurement, in feet Line_type solid or dashed line author Dashed features where uncertain. 25 feet Dashed line where uncertain 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 Downloadable Data 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. How To Get the Data The Standard_Order_Process explains the files that are available for downloading. Several files may be available. Click on the link following Network_Resource_Name to get the file you want. Save this file to a disk. ESRI Shapefile. ESRI Shapefile. unzip 1 http://water.usgs.gov/GIS/dsdl/sir04-5187_Cont2004.zip None. This dataset is provided by USGS as a public service. 20090820 Kelly R. McPherson U.S. Geological Survey Geographer mailing address

Placer Hall, 6000 J Street

Sacramento CA 95819 1-888-275-8747 (1-888-ASK-USGS) (916) 278-3169 http://answers.usgs.gov/cgi-bin/gsanswers?pemail=h2oteam&subject=GIS+Dataset+cont2004 FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998