Faunt, Claudia C. 2006 vector digital data Digital geospatial data sets for the hydrogeologic framework and transient ground-water flow model, Death Valley regional ground-water flow system, Nevada and California hydro_geo Reston, Virginia U.S. Geological Survey http://water.usgs.gov/lookup/getspatial?sir045205_hydro_geo 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. http://pubs.usgs.gov/sir/2004/5205/ This digital dataset represents the surface hydrogeology of an approximately 45,000 square-kilometer area of the Death Valley regional ground-water flow system (DVRFS) in southern Nevada and California. Faunt and others (2004) constructed the map by merging mapped lithostratigraphic units into 27 hydrogeologic units (HGUs). The HGUs represent rocks and deposits of considerable lateral extent and distinct hydrologic properties. The hydrogeologic map was fundamental to the development of a hydrogeologic framework model and a transient ground-water flow model of the DVRFS. These models are the most recent in a number of regional-scale models developed by the U.S. Geological Survey (USGS) for the U.S. Department of Energy (DOE) to support investigations at the Nevada Test Site (NTS) and at Yucca Mountain, Nevada (see "Larger Work Citation", Chapter A, page 8). The hydrogeologic map was used to assess the spatial distribution of aquifers and confining units in the DVRFS; to develop a hydrogeologic framework model; to distribute material properties and recharge; and to develop zone parameters for the DVRFS transient ground-water flow model. The surface hydrogeology data set is one of many layers in a geospatial data base 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 data base 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. These 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 data base supports characterization and conceptualization of the DVRFS, construction of 3D hydrogeologic framework and ground-water flow models, and visualization of analysis and model results. 2006 publication date Complete None planned -117.855702 -114.951355 38.235423 35.368757 USGS Water Basics Glossary. Accessed May 3, 2005 at http://capp.water.usgs.gov/GIP/h2o_gloss/; American Geological Institute Glossary of Geology Death Valley regional ground-water flow system flow model ground water hydrogeologic framework model hydrogeology hydrology hydrogeologic unit transient ground-water model U.S. Board of Geographic Names (BGN) and Geographic Names Information System (GNIS) Amargosa Desert Ash Meadows California California Valley Chicago Valley China Ranch Clark County Clayton Valley Coal Valley Death Valley Esmeralda County Eureka Valley Franklin Lake Franklin Well 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 Bernadino 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 Claudia Faunt mailing and physical address

California Water Science Center

San Diego Projects Office

4165 Spruance Road, Suite 200

San Diego California 92101 USA (619) 225-6142 (619) 225-6101 ccfaunt@usgs.gov http://water.usgs.gov/GIS/browse/sir045205_hydro_geo.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 generated by the GIS and added from Faunt and others (2004) 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. Lines forming polygons join at endpoints to completely enclose defined areas. No duplicate polygon features or pseudo nodes exist. Nodes are represented by a single coordinate pair that indicates the starting and (or) ending point of the line forming the polygon. All vertices that define the shapes of the polygons are represented by unique coordinate pairs. Polygon features in this data set were compiled by Faunt and others (2004) from numerous sources. The data set is complete and is not anticipated to change. The accuracy of the compiled digital line features in the data set is based upon the accuracy of source maps and digital data sets which generally are compiled to meet National Map Accuracy Standards. Horizontal positional accuracy was tested by visually comparing these line features to source maps using a GIS and hardcopy plots. Faunt, C.C. Sweetkind, D.S. Belcher, W.R. 2004 Chapter E 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/ 250,000 online 2004 publication date Faunt and others (2004) Map source Sweetkind, D.S. Belcher, W.R. Faunt, C.C. Potter, C.J. 2004 Chapter B 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/ 250,000 online 2004 publication date Sweetkind and others (2004) Reference information Faunt and others (2004) used computer-based GIS methods to merge mapped lithostratigraphic units into HGUs. The resulting surface hydrogeology map is composed of 27 HGUs (Faunt and others, 2004; Table E-1). The correlation of source lithostratigraphic units with HGUs is summarized by Faunt and others, 2004 (Table E-3) and Sweetkind and others, 2004 (Table B-2). Faunt and others (2004) Sweetkind and others (2004) 2004 Vector G-polygon 13414 Transverse Mercator 0.999600 -117.000000 0.000000 500000.000000 0.000000 coordinate pair 0.000512 0.000512 meters D_Clarke_1866 Clarke 1866 6378206.400000 294.978698 Hydrogeologic unit (HGU) map Map showing the spatial distribution of rocks and deposits of considerable lateral extent and distinct hydrologic properties that form the hydrostratigraphic framework of a ground-water flow system. Author (Point of Contact) 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. UNIT Hydrogeologic unit (HGU) Author (Point of Contact) YAA Younger alluvial aquifer Author (Point of Contact) YACU Younger alluvial confining unit Author (Point of Contact) OAA Older alluvial aquifer Author (Point of Contact) OACU Older alluvial confining unit Author (Point of Contact) LA Limestone aquifer Author (Point of Contact) LFU Lava-flow unit Author (Point of Contact) YVU Younger volcanic-rock unit Author (Point of Contact) Upper VSU Volcanic- and sedimentary-rock unit Author (Point of Contact) TMVA Thirsty Canyon-Timber Mountain volcanic-rock aquifer Author (Point of Contact) PVA Paintbrush volcanic-rock aquifer Author (Point of Contact) CHVU Calico Hills volcanic-rock unit Author (Point of Contact) WVU Wahmonie volcanic-rock unit Author (Point of Contact) CFPPA Crater Flat-Prow Pass aquifer Author (Point of Contact) CFBCU Crater Flat-Bullfrog confining unit Author (Point of Contact) CFTA Crater Flat-Tram aquifer Author (Point of Contact) BRU Belted Range unit Author (Point of Contact) OVU Older volcanic-rock unit Author (Point of Contact) SCU Sedimentary-rock confining unit Author (Point of Contact) UCA Upper carbonate-rock aquifer Author (Point of Contact) UCCU Upper clastic-rock confining unit Author (Point of Contact) LCA_T1 Lower carbonate-rock aquifer (thrusted) Author (Point of Contact) LCCU_T1 Lower clastic-rock confining unit (thrusted) Author (Point of Contact) LCA Lower carbonate-rock aquifer Author (Point of Contact) LCCU Lower clastic-rock confining unit Author (Point of Contact) XCU Crystalline-rock confining unit1 Author (Point of Contact) ICU Intrusive-rock confining unit Author (Point of Contact) area Area of the hydrogeologic unit in square meters. Metadata author Area of the hydrogeologic unit in square meters. Each polygon 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 author (Metadata Contact) for analysis and (or) descriptive purposes (UNIT). - U.S. Geological Survey Ask USGS - Water Webserver Team mailing and physical address

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Reston VA 20192 USA 1-888-275-8747 http://water.usgs.gov/user_feedback_form.html 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 14.149 Megabytes http://water.usgs.gov/GIS/dsdl/hydro_geo.zip None 20070814 U.S. Geological Survey mailing address

445 National Center

Reston Virginia 20192 USA 1-888-275-8747 (1-888-ASK-USGS) http://answers.usgs.gov/cgi-bin/gsanswers?pemail=h2oteam&subject=GIS+Dataset+sir045205_hydro_geo FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998