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 hfbs Reston, Virginia U.S. Geological Survey http://water.usgs.gov/lookup/getspatial?sir045205_hfbs 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 surface traces of regional features simulated as horizontal flow barriers in the Death Valley regional ground-water flow system (DVRFS) transient flow model, an approximately 45,000 square-kilometer area of southern Nevada and California. The DVRFS transient groundwater flow model is one of several 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). Initially, potential ground-water flow barriers were identified on the basis of length, offset, type of slip, orientation with respect to predominant ground-water flow directions, the location of springs, abrupt water level offsets, and hydraulic characteristics (Sweetkind and others, 2004). These potential flow barriers were tested in the transient ground-water flow model for effect on the simulated DVRFS flow system (Faunt and others, 2004). Ultimately, portions of 9 features simulated as horizontal flow barriers were shown to retard flow in the calibrated DVRFS transient model. Features representing horizontal flow barriers were used to retard flow in the transient ground-water flow model of the DVRFS. The horizontal flow barrier data set is one of many layers in a geospatial data base 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 data base 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 data base 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 -117.715022 -114.991624 37.742136 35.508604 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 horizontal flow barrier hydrogeologic framework model hydrogeology hydrology MODFLOW-2000 potential ground-water flow barrier 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, Sutie 200

San Diego California 92101 USA (619) 225-6142 (619) 225-6101 ccfaunt@usgs.gov http://water.usgs.gov/GIS/browse/sir045205_hfbs.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 data set represent the plan-view locations of horizonal flow barriers. Lines may overlap. 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 were selected by Faunt and others (2004) from a set of regional faults representing potential flow barriers in the DVRFS (Sweetkind and others, 2004; Faunt and others, 2004b). This subset of faults was simulated as horizontal-flow barriers in the DVRFS transient ground-water flow model. The data set is complete and is not anticipated to change. 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. Faunt, C.C. Blainey, J.B. Hill, M.C. D'Agnese, F.A. O'Brien, G.M. 2004 Chapter F 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 microfilm 2004 publication date Faunt and others (2004) Data source Sweetkind, D.S. Belcher, W.R. Faunt, C.C. Potter, C.J. 2004 Chapter B 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 online 2004 publication date Sweetkind and others (2004) Source data 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 online 2004 publication date Faunt and others (2004b) Data source Hsieh, P. A. Freckleton, J. R. 1993 document U.S. Geological Survey Open-File Report 92-477 Sacramento, California U.S. Geological Survey http://pubs.er.usgs.gov/usgspubs/ofr/ofr92477 online 1993 publication date Hsieh and Freckleton (1993) Definition of attributes in data set Faunt and others (2004) selected a subset of features representing potential barriers to ground-water flow in the DVRFS region from the digital compilations by Sweetkind and others (2004) and Faunt and others (2004b). The features were explicitly represented as horizontal-flow barriers (Hsieh and Freckleton, 1993) in MODFLOW-2000, the USGS 3D finite-difference code used to simulate ground-water flow in the DVRFS. The locations of these selected mapped features were modifed to follow model cell boundaries (Faunt and others, 2004, Figure F-4). Horizontal flow barriers that had little relationship to, or effect on, the regional flow system were removed from the simulation during the modeling process. Portions of 9 features were ultimately represented as horizontal flow barriers in the calibrated transient ground-water flow model of the DVRFS (Faunt and others, 2004, Figure F-5, Table F-15). Faunt and others (2004) Sweetkind and others (2004) Faunt and others (2004b) 2004 Vector String 1158 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 Horizonal flow barrier Feature used to retard flow in MODFLOW-2000 ground-water flow models (Metadata Contact Person) 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. ROW1 Row number of the model cell on one side of the horizontal-flow barrier Hsieh and Freckleton (1993) 29 192 ROW2 Row number of the model cell on the other side of the horizontal-flow barrier Hsieh and Freckleton (1993) 29 193 COL1 Column number of the model cell on one side of the horizontal-flow barrier Hsieh and Freckleton (1993) 1 160 COL2 Column number of the model cell on the other side of the horizontal-flow barrier Hsieh and Freckleton (1993) 1 160 PARNAM Model parameter name Faunt and others (2004, Table F-15) B_HWY95 Highway 95 fault Metadata author B_DVFC_FCR Death Valley fault zone-Furnace Creek fault zone Metadata author B_LVVSZ_1 Las Vegas Valley shear zone Metadata author B_LVVSZ_I2 Las Vegas Valley shear zone Metadata author B_PAHRUMP Pahrump Valley part of Pahrump-Stewart Valley fault zone Metadata author B_LVVSZ_IS Unnamed splay of the Las Vegas Valley shear zone near Indian Springs Metadata author B_DV_N Northern Death Valley-Furnace Creek fault Metadata author B_SOLTARIO Solitario Canyon fault Metadata author B_TC_LINE Thirsty Canyon lineament Metadata author Each line feature has 7 attributes. Two attributes are automatically generated by the GIS (FID, Shape) for internal software purposes. The remaining attributes were assigned by the author (Point of Contact) for analysis and for developing input files for the DVRFS numerical ground-water flow model. - 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 47 Kilobytes http://rmgsc.cr.usgs.gov/metadata/dvrfs/archive/hfbs.zip None 20070814 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_hfbs FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998