Faunt, Claudia C. 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 bnd_dv_pp1370f Reston, Virginia U.S. Geological Survey http://water.usgs.gov/lookup/getspatial?bnd_dv_pp1370f 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 data set delineates the boundary of the Death Valley region that was first evaluated by the U.S. Geological Survey (USGS) as a potential hydrogeologic environment for isolation of high-level radioactive waste in 1981. Identifying potential high-level waste isolation regions within the Basin and Range physiographic province continued through the 1980's and resulted in comprehensive geologic and hydrologic characterization of select areas. As part of these studies, Bedinger and others (1989) evaluated the Death Valley region, an area of about 80,200-square kilometers in southern Nevada and California, with respect to the geology at repository target depths, ground-water flow, potential transport of radionuclide material, mineral and energy resources, geomorphic processes, tectonic hazards, and the effects of climatic and geomorphic change on the ground-water system. The study by Bedinger and others (1989) served as one of the historical references used to support development of the transient ground-water model of the Death Valley regional ground-water flow system (DVRFS) completed in 2004 by the USGS (see "Larger Work Citation"). This digital data set represents the delineation of the Death Valley region by Bedinger and others (1989) that was based on hydrogeology. This data set is used to illustrate one of many historical definitions of the Death Valley regional ground-water flow system published by the USGS (see "Larger Work Citation", figure A-2, p. 10). The boundary of the Death Valley region by Bedinger and others (1989) is one of many geospatial layers in a spatial 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 spatial 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. 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 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. 1989 publication date Complete None planned -118.332016 -114.306705 39.161916 34.624915 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 (DVRFS) ground water ground-water flow system boundary hydrology hydrogeolgy transient ground-water flow 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 eastern California 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 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 Claudia Faunt mailing and physical address

California Water Science Center

San Diego Projects Office

4165 Spruance Road

San Diego California 92101 USA (858) 637-6842 (858) 637-9201 ccfaunt@usgs.gov http://water.usgs.gov/GIS/browse/sir045205_bnd_dv_pp1370f.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's (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's (OCRWM) Office of Repository Development (ORD), 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 system. In addition, attributes were checked and evaluated as part of the review process associated with the publication of the source report. Lines join at endpoints to completely enclose the area. Lines do not intersect, and no duplicate line features exist. All nodes are represented by a single coordinate pair which indicates the beginning or end of a line. Line features in this data set were digitized from hard copy in Bedinger and others (1989). The data set is complete and is not anticipated to change. Horizontal positional accuracy of line features in the data set is variable and considered sufficient for illustrative use only. The original paper base map (scale 1:1,000,000) from which line features were derived is considered unstable and is assumed to impact the horizontal accuracy of line features. Line features in this data set were compared to coincident digital hydrographic units boundaries (Watermolen, 2002) and found to vary from approxmately 0-5 kilometers. Reference: Watermolen, J., 2002, hucs2m: U.S. Geological Survey data (scale 1:2,000,000) available on the Web, accesssed April 6, 2005, at http://nationalatlas.gov/atlasftp.html Bedinger, M.S. K.A. Sargent (Editor) William H. Langer (Editor) Langer, W.H. Reed, J.E. 1989 map Bedinger, M.S. (Editor) Sargent, K.A. (Editor) Langer, W.H. (Editor) 1989 map U.S. Geological Survey Professional Paper 1370-F Washington D.C. United States Government Printing Office 49 p.; 8 plates 1000000 paper 1989 publication date Bedinger and others (1989) Plate 1 of the source publication was the base used to digitize the lines representing the boundary of the Death Valley region. The line feature in this data set was manually traced onto a stable base mylar from a paper-based copy of plate 1 in Bedinger and others (1989). A drumbed scanner was then used to capture the digital data at a resolution of approximately 0.01 inches. A minimum of four control points corresponding to the latitude and longitude even degree locations on the plate were used to register the data to Universal Transverse Mercator (UTM) during digitization. The digital data set was checked by comparing plots to the source material and the coverage was attributed. Bedinger and others (1989) 1993 Vector G-polygon 1 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 Ground-water flow system boundary The boundary represents the approximate lateral extent of a ground-water flow system. Author (Metadata Contact Person) FID Internal point feature number Environmental Systems Research Institute, Inc. (ESRI) Sequential unique whole numbers that are automatically generated by the GIS. Shape Feature geometry ESRI Coordinates defining line features. Area Areal extent of study area (square meters) Metadata author Area measured in square meters The polygon feature has 3 attributes. Two attributes are automatically generated by the GIS system (FID, Shape) for internal software purposes. The remaining attribute was assigned by the author (Metadata Contact) for analysis and[or] descriptive purposes (Area). - U.S. Geological Survey Ask USGS - Water Webserver Team mailing and physical address

445 National Center

Reston VA 20192 USA 1-888-275-8747 http://water.usgs.gov/user_feedback_form.html Contact via email or phone. Digital data sets for USGS Scientific Investigations Report 2004-5205 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. It is strongly recommended that these data are directly acquired from a U.S. Geological Survey server, and not indirectly through other sources which may have altered the data in some way. Shapefile 1.0 Unzip 36 Kilobytes http://water.usgs.gov/GIS/dsdl/bnd_dv_pp1370f.zip None 20061130 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_bdn_dv_pp1370f FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998