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 ugta_hfm_bnd Reston, Virginia U.S. Geological Survey http://water.usgs.gov/lookup/getspatial?sir045205_ugta_hfm_bnd 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 defines the boundary of the hydrogeologic framework model (HFM) developed by IT Corporation (1996) for the U.S. Department of Energy Underground Test Area Phase I project. The boundary encompasses an approximate 53,000 square-kilometer region which is centered on the Nevada Test Site (NTS) and extends from Death Valley to east of the East Pahranagat Range, and from the Black Mountains to north of Penoyer and the southern part of the Railroad Valleys. The HFM was developed using geologic reports, maps, measured stratigraphic sections, 54 regional interpretive cross sections, approximately 700 lithologic well logs, and geophysical interpretations to define the spatial distribution and composition of 20 hydrogeologic units. The HFM formed the basis of the regional steady-state ground-water flow model of the NTS and surrounding areas developed by IT Corporation (1996b). Belcher and others (2002) integrated the IT Corporation (1996) and the D'Agnese and others (1997) HFM's to produce an HFM for the steady-state flow model of the Death Valley regional ground-water flow system (DVRFS) for the Department of Energy. Source data from the IT Corporation (1996) and the D'Agnese and others (1997) HFM's were subsequently integrated with new geologic interpretations to produce the HFM supporting the transient flow model of the DVRFS (see "Larger Work Citation", Chapter A, for details). References: Belcher, W.R., Faunt, C.C., and D'Agnese, F.A., 2002, Three-dimensional hydrogeologic framework model for use with a steady-state numerical ground-water flow model of the Death Valley regional flow system, Nevada and California: U.S. Geological Survey Water-Resources Investigations Report 01-4254, 87 p., http://pubs.usgs.gov/wri/wri014254 D'Agnese, F.A., Faunt, C.C., Turner, A.K., and Hill, M.C., 1997, Hydrogeologic evaluation and numerical simulation of the Death Valley regional ground-water flow system, Nevada and California: U.S. Geological Survey Water-Resources Investigations Report 96-4300, 124 p., http://pubs.er.usgs.gov/pubs/wri/wri964300 IT Corporation, 1996, Underground test area subproject, Phase I, Data analysis task, volume I-Geologic model data documentation package: Las Vegas, Nev., Report ITLV/10972-181 prepared for the U.S. Department of Energy, 8 volumes, various pagination. IT Corporation, 1996b, Underground test area subproject, Phase I, Data analysis task, volume VI-Groundwater flow model data documentation package: Las Vegas, Nev., Report ITLV/10972-181 prepared for the U.S. Department of Energy, 8 volumes, various pagination. The boundary of the HFM by IT Corporation (1996) was used to develop the HFM supporting the steady-state and transient ground-water flow models of the Death Valley regional ground-water flow system (see "Larger Work Citation", figure A-5, p. 15-17). The boundary of the HFM by IT Corporation (1996) 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 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. 1996 publication date Complete None planned -117.508775 -114.969931 38.523039 35.990461 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 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 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 Claudia Faunt mailing and physical address

California Water Science Center

San Diego Projects Office

4165 Spruance Road

San Diego California 92101 USA (619) 225-6142 (619) 225-6101 ccfaunt@usgs.gov http://water.usgs.gov/GIS/browse/sir045205_ugta_hfm_bnd.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. Lines forming the polygon join at endpoints to completely enclose the area. Lines do not intersect, and no duplicate line features exist. All endpoints are represented by a single coordinate pair which indicates the beginning or end of a line. The polygon feature in this data set was developed by IT Corporation (1996) and acquired digitally by the USGS in 1999. The data set is complete and is not anticipated to change. Horizontal positional accuracy of line features in the data set was tested by visually comparing to digital source maps using a GIS. IT Corporation 1996 map Geologic model data documentation package, Volume I Report ITLV/10972-181 Las Vegas, Nevada U.S. Department of Energy 8 volumes, various pagination. digital file 1996 publication date IT Corporation (1996) Digital source data used to develop HFM boundary. ASCII files containing data defining the hydrogeologic units of the HFM grid were acquired by the USGS from IT Corporation (R. Waddell, IT Corporation, written communication, 1999). The data were imported to Arc/Info raster grids. The overall extent of all the hydrogeologic units was extracted in vector format using Arc/Info. The resulting polygon feature was attributed by the author (Point of Contact). 1999 Vector G-polygon 1 Universal Transverse Mercator 11 0.999600 -117.000000 0.000000 500000.000000 0.000000 coordinate pair 0.000512 0.000512 meters North American Datum of 1927 Clarke 1866 6378206.400000 294.978698 Hydrogeologic framework model boundary Boundary of the area used by a computer model simulating the spatial extent of hydrogeologic units. Metadata author 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. AREA_m2 Area of the study area in square meters. Author (Metadata Contact Person). Unique value representing the area of the study area 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 (Area_m2). - 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 20 Kilobytes http://rmgsc.cr.usgs.gov/metadata/dvrfs/archive/ugta_hfm_bnd.zip None 20070814 U.S. Geological Survey mailing address

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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_ugta_hfm_bnd FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998