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 bnd_wri024102 Reston, Virginia U.S. Geological Survey http://water.usgs.gov/lookup/getspatial?sir045205_bnd_wri024102 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 lateral boundary of the area simulated by the steady-state ground-water flow model of the Death Valley regional ground-water flow system (DVRFS) by D'Agnese and others (2002). The DVRFS flow model was 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. The model area is an approximately 45,000 square-kilometer region of southern Nevada and California. The model simulates prepumping conditions of the DVRFS and provides starting conditions for the development and calibration of a transient ground-water flow model, (see "Larger Work Citation", Chapter A, page 8, for details). The lateral boundary encompassing the model domain is a combination of no-flow boundaries resulting from physical barriers or hydraulic separation of flow regimes (ground-water divides and [or] regional flow lines) and arbitrary lateral-flow (throughflow) boundaries where water is allowed to flow across the lateral boundary. The lateral boundary of the steady-state ground-water flow model by D'Agnese and others (2002) was used to develop the subsequent lateral boundary of the transient ground-water flow model of the Death Valley regional ground-water flow system (see "Larger Work Citation", figure A-2, p. 10). The lateral boundary of the steady-state ground-water flow model by D'Agnese and others (2002) 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. 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. 2002 publication date Complete None planned -117.711796 -114.988239 38.122763 35.481933 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 hydrogeologic framework model hydrogeology hydrology lateral ground-water model boundary spring flow steady state ground-water model transient ground-water model hydraulic head net infiltration 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_bnd_wri024102.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 data set author were checked by inspection using queries, and visually using a GIS. In addition, attributes were checked and evaluated as part of the review process associated with the publication of the source report (Larger Work Citation). Lines forming the polygon feature join at endpoints to completely enclose the interior 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. Line features in this data set were selectively compiled or generalized from hard copy and digital source maps. Line features defining the lateral boundaries of the ground-water flow models by D'Agnese and others (1997) and (IT Corporation, 1996a) were compiled to form the preliminary boundary for the DVRFS. Line features forming the west, northeast, and east portions of the boundary were subsequently modified to conform to a better understanding of the flow system using information from Cardinalli and others (1968) and Workman and others (2002). 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. D'Agnese, F.A. Faunt, C.C. Turner, A.K. Hill, M.C. 1997 map U.S. Geological Survey Water-Resources Investigations Report 96-4300 Reston, Virginia U.S. Geological Survey 124 p. http://pubs.er.usgs.gov/pubs/wri/wri964300 250,000 Digital file 1997 publication date D'Agnese and others (1997) Published model boundary merged with other data to form output model boundary. IT Corporation 1996 map Groundwater flow model data documentation package Report ITLV/10972-181 Las Vegas, Nevada IT Corporation 8 volumes, various pagination. Digital file 1996 publication date IT Corporation (1996a) Published model boundary merged with other data to form output model boundary. Cardinalli, J.L. Roach, L.M. Rush, F.E. Vasey, B.J. 1968 map Rush, F.E. 1968 document Nevada Department of Conservation and Natural Resources Water Resources - Information Series Report 6 Carson City, Nevada Nevada Department of Conservation and Natural Resources Water Resources 500,000 Paper map 1968 publication date Cardinalli and others (1968) Base map used to modify the western portion of the model boundary. Workman, J.B. Menges, C.M. Page, W.R. Taylor, E.M. Ekren, E.B. Rowley, P.D. Dixon, G.L. Thompson, R.A. Wright, L.A. 2002 map U.S. Geological Survey Miscellaneous Field Studies Map MF-2381-A Reston, Virginia U.S. Geological Survey http://pubs.usgs.gov/mf/2002/mf-2381 250,000 Digital file 2002 publication date Workman and others (2002) Base map used to modify the eastern portion of the model boundary. D'Agnese, F.A. O'Brien, G.M. Faunt, C.C. Belcher, W.R. San Juan, C.A. 2002 map U.S. Geological Survey Water-Resources Investigations Report 02-4102 Reston, Virginia U.S. Geological Survey http://pubs.water.usgs.gov/wri024102/ 250,000 online 2002 publication date D'Agnese and others (2002) Digital data set derived from other source data. Line features forming the lateral boundary of the ground-water flow model by D'Agnese and others (2002) were extracted or generalized from acquired hard copy and digital maps using a GIS system. Extracted line features were obtained using queries, while generalized line features were constructed by digitizing select lines of source maps. Line features forming the lateral boundaries of the ground-water flow models by D'Agnese and others (1997) and (IT Corporation, 1996a) were first compiled to form the preliminary boundary for the DVRFS. Line features forming the west, northeast, and east portions of the boundary were subsequently modified to conform to a better understanding of the flow system. For instance, line features forming the western boundary were modified to correspond to hydrographic area boundaries extracted from Cardinalli and others (1968). The northeast and eastern portions of the boundary were modified using hydrogeologic information from a digital geologic map by Workman and others (2002). The southern section was interpreted and digitized by the data set author (Point of Contact) to enclose the area of interest. Line features were modified in some areas to conform to the topographic divides of USGS Digital Elevation Models (DEM). D'Agnese and others (1997) IT Corporation (1996a) Cardinalli and others (1968) Workman and others (2002) 2004 D'Agnese and others (2002) 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 Ground-water flow model lateral boundary Boundary representing the areal extent simulated by a digital computer model that calculates a hydraulic head field for the modeling domain using numerical methods to arrive at an approximate solution to the differential equation of ground-water flow. Modified from Nevada Division of Water Planning Dictionary, Technical water, water quality, environmental, and water-related terms. Accessed May 13, 2005 at <http://water.nv.gov/Water%20planning/dict-1/wwords-g.pdf> 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 in square meters. Metadata author Area of model 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_m2). - 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 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 45 Kilobytes http://water.usgs.gov/GIS/dsdl/bnd_wri024102.zip None 20070813 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_bnd_wri024102 FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998