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 geology_xsecs Reston, Virginia U.S. Geological Survey http://water.usgs.gov/lookup/getspatial?sir045205_geology_xsecs 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 defines the traces of geologic and hydrogeologic cross sections that were used in the construction of a digital three-dimensional (3D) hydrogeologic framework model (HFM) of the Death Valley regional ground-water flow system (DVRFS). The HFM represents the geometry and extent of hydrogeologic units and major structures in an approximately 45,000 square-kilometer region of southern Nevada and California. The HFM was constructed from digital elevation models, geologic maps, borehole information, geologic and hydrogeologic cross sections, and other 3D models to represent the geometry of the hydrogeologic units. Cross sections from five sources were used as input to the HFM: (1) 28 sections of the DVRFS region, (2) six sections of southern Nevada and eastern California, (3) 22 sections from a hydrogeologic framework model of the Nevada Test Site region, (4) four sections of the Yucca Mountain area, and (5) three sections of the southern part of Yucca Mountain and the northern part of Amargosa Desert (Faunt and others, 2004, Chapter E, pages 176-179). The HFM represents principal aquifers and confining units and is an integral component of the DVRFS transient ground-water flow model. The DVRFS HFM and transient ground-water flow 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 traces (or plan view location) of geologic and hydrogeologic cross sections in the DVRFS were used to register (or hang) the 2D geologic and hydrogeologic cross sections in 3D space during the construction of the DVRFS HFM. The cross-section-traces 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 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. 2006 publication date Complete None planned -118.006374 -114.514715 38.119023 35.486264 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 cross section flow model ground water geologic cross section hydrogeologic cross section hydrogeologic framework model hydrogeology hydrology 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_geology_xsecs.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. Line features in this dataset represent the plan view locations of cross sections. Some lines may overlap, but they do not intersect. No duplicate line features exist. All nodes are represented by a single coordinate pair which indicates the beginning or end of a line. All vertices that define the shape of the line are represented by a unique coordinate pair. Line features in this data set were compiled by Faunt and others (2004). 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 system. 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 paper and online 2004 publication date Faunt and others (2004) Source data Digital lines representing the plan view locations of cross sections were compiled from existing data by Faunt and others (2004). The data set was integrated into the project GIS database and used without further modification. Faunt and others (2004) 2004 Vector String 63 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 Cross section traces Alignment along which a geologic and (or) hydrgeologic cross section has been interpreted (or drawn) 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. SECTNAME Cross section identifier name Metadata Author Unique identifier name assigned to a cross section AUTHOR Abbreviated reference Metadata Author Abbreviated citation; see Faunt and others (2004) p. 253-255 for complete citations. Line features in this data set have 4 attributes. Attributes automatically generated by the GIS (FID, Shape) are for internal software purposes. The remaining attributes were assigned by the author (Point of Contact) for analytical and (or) descriptive purposes. - 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 20 Kilobytes http://water.usgs.gov/GIS/dsdl/geology_xsecs.zip None 20070201 U.S. Geological Survey mailing address

445 National Center

Reston Virginia 20192 USA (303) 236-5050 ext. 239 http://answers.usgs.gov/cgi-bin/gsanswers?pemail=h2oteam&subject=GIS+Dataset+sir045205_geology_xsecs FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998