Bedinger, M.S. Harrill, J.S. 2006 map Digital geospatial data sets for the hydrogeologic framework and transient ground-water flow model, Death Valley regional ground-water flow system, Nevada and California regpot_sir045205 Reston, Virginia U.S. Geological Survey https://water.usgs.gov/lookup/getspatial?sir045205_regpot Belcher, W.R. and Sweetkind, D.S. (editors) 2010 U.S. Geological Survey Professional Paper 1711 Reston, Virginia U.S. Geological Survey 6 chapters, 2 appendices, 2 plates, 403 p. http://pubs.er.usgs.gov/publication/pp1711 Belcher, W.R. (editor) 2004 U.S. Geological Survey Scientific Investigations Report 2004-5205 Reston, Virginia U.S. Geological Survey 6 chapters, 2 appendices, 2 plates, 408 p. https://pubs.usgs.gov/sir/2004/5205/ The contours in this digital data set represent the regional potentiometric surface developed by Bedinger and Harrill (2004) to assess potential interbasin flow in the Death Valley regional ground-water flow system (DVRFS). To obtain an adequate network of control points for that 100,000 square-kilometer region of southern Nevada and California, Bedinger and Harrill (2004) used regional potential altitudes derived from surface-water features, ground-water levels, topographic settings, deep wells, and spring data. A set of general guidelines was developed to relate regional ground-water potential to these more readily observed surface and near-surface ground-water levels and to hydrologic characteristics of ground-water basins in the DVRFS (see "Larger Work Citation", Appendix 1). Bedinger and Harrill (2004) hand-contoured the regional potential data to produce the DVRFS potentiometric-surface map. The regional potentiometric-surface contours by Bedinger and Harrill (2004) were used to delineate areas outside the DVRFS transient model domain that contribute ground-water flow to the model, and to estimate the regional hydraulic gradient and the amount of ground-water flow on the lateral DVFRS model boundary (see "Larger Work Citation", Appendices 1 and 2). The regional potentiometric-surface by Bedinger and Harrill (2004) is one of many layers in a geospatial database supporting the USGS DVRFS project. During this 5-year (1998-2004) project the USGS, in cooperation with DOE and other Federal, State, and local agencies, developed this geospatial database for a regional-scale, 3D hydrogeologic framework model (HFM) and a ground-water flow model. The models are intended to address water-resource issues and the potential movement of radioactive material from the Nevada Test Site and the proposed high-level nuclear waste repository at Yucca Mountain, Nevada. Data from two previous ground-water flow models of the greater Death Valley region (see "Larger Work Citation", Chapter A, p. 7) were the foundation of the DVRFS geospatial database. Those and other data were reexamined through a series of regional-scale hydrologic investigations to provide updated and spatially consistent interpretations for the DVRFS study. In some cases, new data were collected to augment the existing information. Data compiled from the studies i nclude natural ground-water discharge occurring through evapotranspiration and spring flow; ground-water pumping for the period 1913-98; ground-water recharge simulated as net infiltration; ground-water inflow and outflow at lateral model boundaries; hydraulic conductivity and its relation to depth and other rock properties; and the estimation of water levels representative of prepumped and pumped conditions in the region. Digital elevation models, geologic maps, borehole information, cross sections, and other 3D models were used to develop the HFM which represents the geometry of 27 hydrogeologic units and structural features. The resulting geospatial database supports characterization and conceptualization of the DVRFS, construction of 3D hydrogeologic framework and ground-water flow models, and visualization of analysis and model results. 2004 publication date Complete None planned -119.250152 -113.870709 39.935128 33.871814 USGS Thesaurus Death Valley regional ground-water flow system evapotranspiration flow model ground water ground-water discharge ground-water pumping ground-water recharge hydraulic conductivity hydraulic head hydrogeologic framework model hydrogeology hydrology lateral ground-water flow lateral ground-water model boundary net infiltration spring flow steady state ground-water model transient ground-water model water level water well USGS Metadata Identifier USGS:42b91f9e-fbb5-4afe-b580-9f0924455f28 U.S. Board of Geographic Names (BGN) and Geographic Names Information System (GNIS) Amargosa Desert Ash Meadows California Valley Chicago Valley China Ranch Clark County Clayton Valley Coal Valley Death Valley eastern California Esmeralda County Eureka Valley Franklin Lake Garden Valley Inyo County Kern County Las Vegas Valley Lincoln County Mesquite Valley Mineral County Mono County Nevada Nevada Test Site Nye County Oasis Valley Owlshead Mountains Pahranagat Range Pahrump Valley Panamint Range Penoyer Valley Railroad Valley Resting Spring Saline Valley San Bernardino County Sarcobatus Flat Sheep Range Shoshone Silurian Valley southern Nevada Spring Mountains Stewart Valley Stone Cabin Valley Tecopa Yucca Mountain California Franklin Well None Data have been checked to ensure the accuracy of the data. If any errors are detected, please notify the originating office. The U.S. Geological Survey strongly recommends that careful attention be paid to the metadata file associated with these data. The U.S. Geological Survey shall not be held liable for improper or incorrect use of the data described and (or) contained herein. Acknowledgement of the U.S. Geological Survey would be appreciated in products derived from these data. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Although this Federal Geographic Data Committee-compliant metadata file is intended to document the data set in nonproprietary form, as well as in ArcGIS format, this metadata file may include some ArcGIS-specific terminology. U.S. Geological Survey Wayne R. Belcher mailing and physical address

160 N. Stephanie Street

Henderson Nevada 89074 USA (702) 564-4609 (702) 564-4600 wbelcher@usgs.gov https://water.usgs.gov/GIS/browse/sir045205_regpot.jpg Illlustration of data set jpg Spatial data sets supporting the Death Valley regional ground-water flow system (DVRFS) project were developed in cooperation with the U.S. Department of Energy (DOE) National Nuclear Security Administration/Nevada Site Office (NNSA/NSO) Underground Test Area (UGTA) project of the Office of Environmental Management, the NNSA/NSO Hydrologic Resource Management Program (HRMP), the Office of Civilian Radioactive Waste Management (OCRWM) Yucca Mountain Project (YMP), the NNSA/NSO Maintenance of Test Capability (MTC) program, and the National Park Service (NPS). Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.1.0.722 Attributes added by the GIS and the data-set author were checked by inspection using a GIS. In addition, attributes were checked and evaluated as part of the review process associated with the publication of the source report (see "Large Work Citation"). Lines in this data set do not intersect themselves or other lines, and no duplicate line features exist. All endpoints are represented by a single coordinate pair which indicates the beginning or end of a line. All vertices that define the shape of the line are represented by a unique coordinate pair. The line features in this data set were hand-drawn by Bedinger and Harrill (2004). The data set is complete and is not anticipated to change. Horizontal positional accuracy of line features in the data set was tested by comparing hard-copy plots to source maps and visually using a GIS system. Bedinger, M.S. Harrill, J.R. 2004 map Plate 1 Belcher, W.R., (ed.) 2004 document U.S. Geological Survey Scientific Investigations Report 2004-5205 Reston, Virginia U.S. Geological Survey Appendix 1 http://water.usgs.gov/pubs/sir/2004/5205/ 650,000 online 2004 publication date Bedinger and Harrill (2004) Source data Bedinger and Harrill (2004) estimated regional potential altitudes for a network of control points for the DVRFS and surrounding area from surface-water features, ground-water levels, topographic settings, deep wells, and springs. The data were imported into a GIS; base maps displaying the reference points and the regional potential values were produced; and contours of these data were hand-drawn by Bedinger and Harrill (2004). A high accuracy cursor and tablet board were used to capture the data at a resolution of approximately .002-inches (see Larger Work Citation, plate 1). Bedinger and Harrill (2004) 2003-2004 Andrew Y. Morita U.S. Geological Survey mailing and physical address

California Water Science Center

San Diego Projects Office

4165 Spruance Road

San Diego California 92101 United States of America (619) 225-6167 (619) 225-6101 amorita@usgs.gov Vector String 28 Universal Transverse Mercator 11 0.999600 -117.000000 0.000000 500000.000000 0.000000 coordinate pair 0.001024 0.001024 meters North American Datum of 1927 Clarke 1866 6378206.400000 294.978698 Regional ground-water potential contour Line representing a constant value of total ground-water head. Author (Metadata Contact Person) FID Internal feature number. Environmental Systems Research Institute, Inc. (ESRI) Sequential unique whole numbers that are automatically generated. Shape Feature geometry. ESRI Coordinates defining the features. POT_SURF_M Altitude of potentiometric surface (in meters referenced to North American Vertical Datum of 1988) Author (Citation Originators) 0 1950 Meter Each line feature has 3 attributes. Two attributes are automatically generated by the GIS (FID, Shape) for internal software purposes. The remaining attribute was assigned by the authors (Citation Originators) for analysis and[or] descriptive purposes. - U.S. Geological Survey Michael Ierardi mailing and physical address

445 National Center

Reston VA 20192 USA 1-888-275-8747 mierardi@usgs.gov Contact via email or phone. Digital geospatial data sets for the transient ground-water flow model and hydrogeologic framework model, Death Valley regional ground-water flow system, Nevada and California Although these data have been processed successfully on a computer system at the U.S. Geological Survey, no warranty expressed or implied is made regarding the accuracy or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. This disclaimer applies both to individual use of the data and aggregate use with other data. These data should be directly acquired from a U.S. Geological Survey server, and not indirectly through other sources that may have altered the data in some way. Shapefile 1.0 Unzip 40Kilobytes https://water.usgs.gov/GIS/dsdl/regpot_sir045205.zip None 20201117 U.S. Geological Survey mailing address

445 National Center

Reston Virginia 20192 USA 1-888-275-8747 (1-888-ASK-USGS) mierardi@usgs.gov FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998