Hevesi, Joseph A. 2006 raster 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 rch_model1 Reston, Virginia U.S. Geological Survey http://water.usgs.gov/lookup/getspatial?sir045205_rch_model1 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/ Recharge in the Death Valley regional ground-water flow system (DVRFS) was estimated from net infiltration simulated by Hevesi and others (2003) using a deterministic mass-balance method. Hevesi and others (2003) estimated potential recharge for the DVRFS, an approximately 100,000 square-kilometer region of southern Nevada and California, using the net-infiltration model, INFILv3. Net infiltration, estimated on a cell-by-cell basis, equaled the sum of snowmelt, precipitation, and infiltrating surface flow minus the sum of evapotranspiration (ET), runoff, and changes in root-zone storage. The net-infiltration model was calibrated to available surface-water flow measurements and constrained by prior estimates of recharge and discharge. The calibrated net-infiltration model (model 1 in Hevesi and others, 2003) was used to simulate daily net infiltration from 1950 through 1999 across the DVRFS model domain (San Juan and others, 2004) and was also used as a component of recharge in the DVRFS transient ground-water flow model (Faunt and others, 2004). The DVRFS transient ground-water flow model is one of 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 net-infiltration raster data set was used to develop input to MODFLOW-2000, the USGS 3D finite-difference code used to simulate ground-water flow in the DVRFS. The estimate of net-infiltration was also used to compute a water budget for the DVRFS. The net infiltration 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 data base. 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. 2004 publication date Complete None planned -118.043088 -114.914374 38.268002 34.987649 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 ground-water recharge hydrology INFILv3 lateral ground-water flow MODFLOW-2000 net infiltration 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 Joseph A. Hevesi mailing and physical address

Sacramento Water Science Center

6000 J Street

Placer Hall Room 2005

Sacramento California 95819 USA (916) 278-3274 (916) 278-3070 jhevesi@usgs.gov http://water.usgs.gov/GIS/browse/sir045205_rch_model1.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 9.1.0.780 No tests for logical consistency have been performed on this map layer. The raster data set was computer-generated by Hevesi and others (2003). The data set is complete and is not anticipated to change. The datum of the map is consistent with standard 7.5 minute USGS topographical maps. Hevesi, J.A. Flint, A.L. Flint, L.E. 2003 document U.S. Geological Survey Water-Resources Investigations Report 03-4090 Sacramento, California U.S. Geological Survey http://pubs.er.usgs.gov/usgspubs/wri/wri034090 online 2003 publication date Hevesi and others (2003) Source data San Juan, C.A. Belcher, W.R. Laczniak, R.J. Putnam, H.M. 2004 Chapter C 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 San Juan and others (2004) Source data. Faunt, C.C. Blainey, J.B. Hill, M.C. D'Agnese, F.A. O'Brien, G.M. 2004 Death Valley regional ground-water flow system, Nevada and California--Hydrogeologic framework and transient ground-water flow model 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 (2004) Source data Hevesi and others (2003) estimated net infiltration (potential recharge) for the DVRFS using the net-infiltration model, INFILv3. The calibrated net-infiltration model (model 1 in Hevesi and others, 2003) was used to simulate daily net infiltration from 1950 through 1999 across the DVRFS model domain (San Juan and others, 2004) and was also used as a component of recharge in the DVRFS transient ground-water flow model (Faunt and other, 2004). ASCII output from model 1 (Hevesi and others, 2003) was imported into ArcInfo Workstation using the "ASCIIGRID" command to produce a raster grid. The resulting north-south oriented raster grid represents net-infiltration in millimeters per year at 278.5 meter cell resolution. The lower left corner of the grid is located at UTM coordinates 408744.6366 meters, 3873302.2972 meters; and the grid has 983 columns and 1,300 rows. Hevesi and others (2003) San Juan and others (2004) Faunt and others (2004) 2004 Raster Universal Transverse Mercator 11 0.999600 -117.000000 0.000000 500000.000000 0.000000 row and column 278.494219 278.494219 meters North American Datum of 1927 Clarke 1866 6378206.400000 294.978698 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. ARCE Unzip 2.144 Kilobytes http://water.usgs.gov/GIS/dsdl/rch_model1.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_rch_model1 FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998