Bedinger, M.S. Harrill, J.R. 2005 Edition 2 which is an update from sir045205_regpot_wl_nv.xml 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_wl_nv_sir045205 Reston, Virginia U.S. Geological Survey https://water.usgs.gov/lookup/getspatial?pp1711_regpot_wl_nv 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/ This digital data set is a compilation of reference points representing surface-water features, ground-water levels, and topographic settings in Nevada that were used for the regional ground-water potential map by Bedinger and Harrill (2004). The regional ground-water-potential map was developed to assess potential interbasin flow in the Death Valley regional ground-water flow system (DVRFS), a 100,000-square-kilometer region of southern Nevada and California. To obtain an adequate network of control points, Bedinger and Harrill (2004) also used regional potential altitudes derived from springs and deep well 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). The topographic reference points and the DVRFS regional ground-water potential map 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 at the lateral DVFRS model boundary (see "Larger Work Citation", Appendix 1 and 2). The topographic reference points in Nevada for the regional ground-water potential map by Bedinger and Harrill (2004) is one of many data sets 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 include 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 -118.618732 -113.939293 39.845948 35.338376 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 hydraulic-head observation 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 inlandWaters ISO 19115 Topic Category geoscientificInformation inlandWaters environment USGS Metadata Identifier USGS:40ab1917-4dcf-4157-b13e-14a84a643d86 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 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_wl_nv.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"). All points are represented by a single coordinate pair and define the location of a surface-water feature, ground-water level, or a topographic setting at which the regional ground-water potential is estimated. The point features in this data set were compiled from multiple sources by Bedinger and Harrill (2004). The data set is complete and is not anticipated to change. Horizontal positional accuracy of point features in the data set was tested by visually comparing to digital source maps using a GIS system. Bedinger, M.S. Harrill, J.R. 2004 Appendix 1, p. 355 - 374 Belcher, W.R. (ed.) 2004 document U.S. Geological Survey Scientific Investigations Report 2004-5205 Reston, Virginia U.S. Geological Survey http://water.usgs.gov/pubs/sir/2004/5205/ 650,000 online 2004 publication date Bedinger and Harrill (2004) Source data Reference points for regional potential altitudes derived from surface-water features, ground-water levels, and topographic settings in the Nevada portion of the DVRFS were compiled from source material into spreadsheets (see Bedinger and Harrill, 2004, p. 373-374 for citations). The reference points were assigned a unique identification number and attributed with descriptive information including an estimate of regional ground-water potential. In locations of perennial surface-water features, such as lakes and streams, regional ground-water potential was estimated at a point within the boundary of the surface-water feature where the water-surface elevation is known from a topographic map or reference map. In topographic settings, such as valleys or playas, the regional ground-water potential was estimated in relation to a point where the ground-water level is known from a reference map or land surface elevation is known from a topographic map. The data were imported into a GIS and base maps displaying the reference points and the regional potential values were produced. Bedinger and Harrill (2004) hand-contoured these data to produce a regional ground-water potential map for the DVRFS (see "Larger Work Citation", plate 1). Bedinger and Harrill (2004) 2003-2004 Vector Entity point 155 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 reference point Location at which regional ground-water potential is estimated from a surface-water feature, ground-water level, or the topographic setting. 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. MAP_ID Unique point identification number Author (Citation Originators) Unique integer identifying each point feature. LONGITUDE Longitude coordinates of reference point reported in decimal degrees Author (Citation Originators) -118.580 -114.0482 Decimal degrees LATITUDE Latitude coordinates of reference point reported in decimal degrees Author (Citation Originators) 35.35520 39.83480 Decimal degrees MAP_FEATUR Map feature Author (Citation Originators) Descriptive text name of place or topographic feature on a map. PLSS_LOC Public Land Survey System location Author (Citation Originators) PLSS section, township, range; 'S' for San Bernardino principal meridian, 'M' for Mount Diablo principal meridian REG_POT_M Regional potential altitude (meters) Author (Citation Originators) Approximate altitude of regional ground-water potential (meters) TOPO_SET Topographic setting Author (Citation Originators) General topographic setting of regional ground-water potential reference point. REFERENCE Abbreviated citation of source information Author (Citation Originators) Abbreviated citation; see Source Citation, p. 373-374 for complete citations. Each point feature has 10 attributes. Two attributes are automatically generated by the GIS (FID, Shape) for internal software purposes. The remaining attributes were assigned by the authors (see 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 26 https://water.usgs.gov/GIS/dsdl/regpot_wl_nv_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