Faunt, Claudia C. 2006 Edition 2 which is an update from sir045205_bnd vector digital data Digital geospatial data sets for the hydrogeologic framework and transient ground-water flow model model, Death Valley regional ground-water flow system, Nevada and California bnd_sir045205 Reston, Virginia U.S. Geological Survey https://water.usgs.gov/lookup/getspatial?pp1711_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. https://pubs.usgs.gov/sir/2004/5205/ This digital data set defines the lateral boundary and model domain of the area simulated by the transient ground-water flow model of the Death Valley regional ground-water flow system (DVRFS). The DVRFS transient ground-water flow model is 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, for details). The model domain is an approximately 45,000 square-kilometer region of southern Nevada and California. 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 ground-water flows across the lateral boundary. The lateral boundary is subdivided into 12 segments to reflect boundary conditions. The DVRFS lateral boundary represents the extent of the area simulated in the transient ground-water flow model of the Death Valley regional ground-water flow system, Nevada and California. The definition of this area is used to develop input files to MODFLOW-2000, the USGS 3D finite-difference code used to simulate ground-water flow in the DVRFS, and to assess potential lateral ground-water flow between the model domain and adjacent areas. The DVRFS lateral-boundary data set 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 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 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 -117.711801 -114.976734 38.123272 35.481753 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 hydrogeology hydrology lateral ground-water flow lateral ground-water model boundary MODFLOW-2000 transient ground-water model inlandWaters ISO 19115 Topic Category geoscientificInformation inlandWaters environment USGS Metadata Identifier USGS:d759ebcd-1050-4d77-8a3a-bd011322d0cc 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 (619) 225-6142 (619) 225-6101 ccfaunt@usgs.gov https://water.usgs.gov/GIS/browse/sir045205_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 data-set author were checked routinely by inspection using queries, hardcopy printouts, 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 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 selectively compiled or generalized from hard copy and digital source maps. Line features from digital source maps were selected to define the areal extent of the hydrogeologic system of interest. Line features forming the western boundary were modified from hydrographic areas defined by Cardinalli and others (1968). Line features in northeast section were modified from a previous ground-water flow model boundary (IT Corporation, 1996). Structural geology features (Workman and others, 2002) were the basis for line features on the mid-eastern section of the boundary. The southern section was interpreted by the data-set author and based on work described by D'Agnese and others (1997). 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. Cardinalli, J.L. Roach, L.M. Rush, F.E. Vasey, B.J. 1968 map Nevada Department of Conservation and Natural Resources Water Resources - Information Series Report 6 Carson City, Nevada Nevada Division of Water Resources Map (plate) in "Index of hydrographic areas in Nevada" 500000 Paper map 1968 publication date Cardinalli and others (1968) Base map for line features on the western portion of the data set. IT Corporation 1996 Report ITLV/10972--181 prepared for the U.S. Department of Energy Report ITLV/10972--181 Las Vegas, Nevada IT Corporation Digital line map 1996 publication date IT Corporation (1996) Digital base map used for line features forming the northern portion of the 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 https://pubs.usgs.gov/mf/2002/mf-2381/ 250000 Digital line map 2002 publication date Workman and others (2002) Digital basemap used for line features forming the eastern portion of the boundary data set. U.S. Geological Survey 2004 raster digital data 250000 Digital Elevlation Model 2004 publication date DEM A shaded-relief base image was rendered from the digital elevation model to show topographic features. The shaded-relief base was used to adjust compiled line features to better match topographic divides in some localities. Line features forming the lateral boundary of the ground-water flow model 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 western boundary are hydrographic area boundaries extracted from Cardinalli and others (1968). Line features in the northeast section are generalized from the boundary of a previous ground-water flow model (IT Corporation, 1996). Fault traces were extracted from a digital geologic map by Workman and others (2002) to form the eastern section of the boundary. 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). The line features were subdivided into 12 segments, primarily on the basis of hydrogeologic units. The segments were attributed with name and number identifiers for purposes of conducting ground-water inflow and outflow studies. Cardinalli and others (1968) IT Corporation (1996) Workman and others (2002) DEM 2002 Vector String 13 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 (NAD 27) Clarke 1866 6378206.400000 294.978698 Ground-water flow model lateral boundary Boundary representing the aerial 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 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 the point features. SECTION Whole number corresponding to a segment of the DVRFS boundary Metadata author 1 Lateral boundary segment intersecting the Owlshead Mountains Metadata author 2 Lateral boundary segment intersecting the Panamint Range Metadata author 3 Lateral boundary segment intersecting Saline Valley Metadata author 4 Lateral boundary segment intersecting Eureka Valley Metadata author 5 Lateral boundary segment intersecting Clayton Valley Metadata author 6 Lateral boundary segment intersecting Stone Cabin and Railroad Valleys Metadata author 7 Lateral boundary segment intersecting Garden and Coal Valleys Metadata author 8 Lateral boundary segment intersecting the Pahranagat Range Metadata author 9 Lateral boundary segment intersecting the Sheep Range Metadata author 10 Lateral boundary segment intersecting the Las Vegas Valley Metadata author 11 Lateral boundary segment intersecting the Spring and Mesquite Ranges Metadata author 12 Lateral boundary segment intersecting Silurian Valley Metadata author SECT_NAME Name of a segment of the DVRFS boundary Metadata author Abbreviated name of boundary segment Each line feature has 4 attributes. Two attributes are automatically generated by the GIS system (FID, Shape) for internal software purposes. The remaining 2 attributes were added by the data set author (Point of Contact) to identify hydrologically distinct sections of the model boundary, and to assess lateral ground-water inflow and(or) outflow. - 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 34 https://water.usgs.gov/GIS/dsdl/bnd_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