Faunt, Claudia C. 2012 vector digital data Professional Paper 1766 Reston, Virginia U.S. Geological Survey https://water.usgs.gov/lookup/getspatial?pp1766_municipal_pumpage_loc Faunt, Claudia C. (editor) 2009 Professional Paper 1766 Reston, VA U.S. Geological Survey https://pubs.usgs.gov/pp/1766/PP_1766.pdf This digital dataset contains the virtual wells used for urban (municipal and industrial use) pumpage for the Central Valley Hydrologic Model (CVHM). The Central Valley encompasses an approximate 50,000 square-kilometer region of California. The complex hydrologic system of the Central Valley is simulated using the U.S. Geological Survey (USGS) numerical modeling code MODFLOW-FMP (Schmid and others, 2006). This application is referred to here as the CVHM (Faunt, 2009). Utilizing MODFLOW-FMP, the CVHM simulates groundwater and surface-water flow, irrigated agriculture, land subsidence, and other key processes in the Central Valley on a monthly basis from 1961-2003. The total active modeled area is 20,334 square-miles on a finite difference grid comprising 441 rows and 98 columns. Slightly less than 50 percent of the cells are active. The CVHM model grid has a uniform horizontal discretization of 1x1 square mile and is oriented parallel to the valley axis, 34 degrees west of north (Faunt, 2009). Groundwater pumpage is a major part of the groundwater budget of the Central Valley, and is grouped into two categories for this study: agricultural and urban (which includes municipal and industrial sources). Urban wells were simulated as multi-node wells (Halford and Hanson, 2002) (Faunt, 2009; fig. C3). In each WBS, a single well was placed in each model cell where the predominant land use for a given time frame was urban. Because the extent of urban areas changes through time, wells were added and deleted accordingly in the model during the simulation period. In general, agricultural wells were replaced by urban wells in the model as the land use changed from agricultural to urban. The single well per model cell represents the composite of all wells in each square-mile cell and is referred to here as a virtual well. The CVHM is the most recent regional-scale model of the Central Valley developed by the USGS. The CVHM was developed as part of the USGS Groundwater Resources Program (see "Foreword", Chapter A, page iii, for details). The urban virtual well dataset was used as input to MODFLOW-FMP, the USGS 3-dimensional finite-difference code used to simulate flow in the CVHM. The single well per model cell represents the composite of all wells in each square-mile cell and is referred to here as a virtual well. This is a supporting dataset that feeds the CVHM with the location and perforated intervals of the virtual wells. The CVHM is a tool that accounts for integrated, variable water supply and demand, and simulates surface-water and groundwater-flow across the entire Central Valley system. The urban virtual well dataset is one of many layers in a geospatial database supporting the USGS Central Valley Groundwater Availability Project. Regional groundwater availability studies quantify current groundwater resources, evaluate how those resources have changed through time, and provide tools that decision makers can use to predict system responses to future development and climate variability and change. To provide information to stakeholders addressing these issues, the USGS made a detailed assessment of groundwater availability of the Central Valley aquifer system, which includes: (1) the present status of groundwater resources; (2) characterization of how these resources have changed over time; and (3) tools to assess system responses to stresses from future human uses and climate variability and change. This effort builds on previous investigations, such as the USGS Central Valley Regional Aquifer System and Analysis (CV-RASA) project and several other groundwater studies in the Valley completed by Federal, State and local agencies at various scales. Data from these previous studies were the foundation of the Central Valley geospatial database. These and other data were re-examined through a series of regional-scale hydrologic investigations to provide updated and spatially consistent interpretations for the Central Valley Groundwater Availability study. In some cases, new data were collected to augment existing information. Data compiled from the studies include geology (in particular, borehole lithology and the extent and thickness of the Corcoran Clay Member of the Tulare Formation), topography, remote sensing, climate (precipitation and temperature), geophysics, vegetation and land use, vegetation properties, hydrology (stream network and flows), groundwater levels, subsidence, chemistry, and soils. Digital elevation models, geologic maps, borehole information, cross sections, and other 3-dimensional models were used to develop the texture model which represents the properties and geometry of the Central Valley alluvial deposits. The resulting geospatial database supports characterization and conceptualization of the Central Valley hydrologic system between 1961 and 2003, construction of 3-dimensional hydrogeologic framework and hydrologic flow models, and visualization of analysis and model results. 2009 publication date Complete None planned -122.482403 -118.732508 40.675448 34.970183 ISO 19115 Topic Category geoscientificInformation inlandWaters environment American Geological Institute Glossary of Geology (http://glossary.agiweb.org/dbtw-wpd/glossary/search.aspx) hydrology hydrogeology model groundwater pumpage USGS Thesaurus Central Valley Aquifer CV-RASA Texture Model Flow Model CVHM Central Valley Hydrologic Model Groundwater Availability of the Central Valley Aquifer virtual well inlandWaters USGS Metadata Identifier USGS:4e5ad26b-a459-469f-abfd-6e37ef781b6f Geographic Names Information System (GNIS) Central Valley, California San Joaquin Valley Sacramento Valley Ventura County Santa Barbara County San Luis Obispo County Kern County Kings County Tulare County Monterey County San Benito County Santa Clara County Fresno County Merced County Madera County Mariposa County Alameda County Stanislaus County Contra Costa County San Joaquin County Tuolumne County Calaveras County Solano County Amador County Sacramento County Napa County Sonoma County Yolo County El Dorado County Placer County Sutter County Colusa County Nevada County Lake County Yuba County Glenn County Mendocino County Butte County Humboldt County Tehama County Shasta County Trinity County Central Valley California 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 dataset in nonproprietary form, as well as in ArcGIS format, this metadata file may include some ArcGIS-specific terminology. Spatial datasets supporting the Central Valley Groundwater Availability project were developed primarily by the U.S. Geological Survey's (USGS) Groundwater Resources Program. This program is conducting large-scale multidisciplinary regional studies of groundwater availability. The U.S. Bureau of Reclamation is supporting the updating of the Central Valley datasets and their documentation and release. Claudia C. Faunt U.S. Geological Survey Hydrologist 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 https://water.usgs.gov/GIS/browse/pp1766_municipal_pumpage_loc.png Illlustration of data set png Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog 9.3.1.3500 Schmid, Wolfgang Hanson, R. T. Maddock, Thomas, III Leake, S. A. 2006 Techniques and Methods 6-A17 Sacramento, CA USGS California Water Science Center https://pubs.usgs.gov/tm/2006/tm6A17/ Halford, Keith J. Hanson, Randall T. 2002 Open-File Report 2002-293 Reston, VA U.S. Geological Survey https://pubs.usgs.gov/of/2002/ofr02293/text.html 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. Points are centered in CVHM model grid cells The features in this dataset are computer-generated and represent locations of municipal wells in the Central Valley Hydrologic Model. The dataset is complete and is not anticipated to change. Faunt, Claudia C. (editor) 2009 Professional Paper 1766 Reston, VA U.S. Geological Survey 500000 online 2009 publication date Faunt and others (2009) See Professional Paper 1766 - Groundwater Availability of the Central Valley Aquifer, California. Gilliom, Robert J. Barbash, Jack E. Crawford, Charles G. Hamilton, Pixie A. Martin, Jeffrey D. Nakagaki, Naomi Nowell, Lisa H. Scott, Jonathan C. Stackelberg, Paul E. Thelin, Gail P. Wolock, David M. 2006 Circular 1291 Reston, VA U.S. Geological Survey https://pubs.usgs.gov/circ/2005/1291/ online 2009 publication date Gilliom and others (2006) Land use data for 1992 California Department of Water Resources 2000 vector digital data Sacramento, CA California Department of Water Resources http://www.water.ca.gov/landwateruse/lusrvymain.cfm online 2009 publication date CA DWR (2000) Land use data for 1960, 1973, 1992, 1998 and 2000 Dept of Geography and Planning and Geographic Information Center, California State University, Chico 2003 map Chico, CA California State University, Chico http://www.gic.csuchico.edu/pdf/summary_rpt.pdf online 2009 publication date CSU Chico (2003) Land use data for 1960 U.S. Geological Survey 1990 vector digital data Data User Guide 4 Reston, VA U.S. Geological Survey http://vterrain.org/Culture/LULC/Data_Users_Guide_4.html 250000 online 2009 publication date USGS (1990) Land use data for 1973 The model-grid centroid data were generated using a GIS. The upper and lower well-perforation depths were interpolated onto each model cell using a GIS. The aggregated perforation intervals and corresponding layers were assigned to the centroids. The model grid was intersected with land use information from California Department of Water Resources. Cells located in urban land uses were identified and retained. 2009 Central Valley, comprised of the Sacramento Valley on the north and the San Joaquin Valley on the south, located in the state of California. Vector Entity point 1669 Albers Conical Equal Area 29.500000 45.500000 -120.000000 23.000000 0.000000 0.000000 coordinate pair 100 100 meters North American Datum of 1983 Geodetic Reference System 80 6378137.000000 298.257222 Pumpage Rate for Municipal Wells Pumpage rate for municipal wells in the Central Valley for dates April 1961 through September 2003 dataset originator FID Internal feature number. ESRI Sequential unique whole numbers that are automatically generated. Shape Feature geometry. ESRI Coordinates defining the features. CELLNUM Hydrologic model grid cell number, beginning in northwest (upper left) and wrapping west to east (left to right) and south (down). dataset originator 1 43218 Integer ROW Hydrologic model grid row number, starting in the north and increasing to the south dataset originator 1 441 Integer COLUMN_ Hydrologic model grid column number, starting on west and increasing to the east. dataset originator 1 98 Integer 1992_id Landuse classification for landuse dataset (2 represents urban pumpage) Gilliam and others (2006) and CA DWR (2000) 1 22 Integer 1960_id Landuse classification for landuse dataset (2 represents urban pumpage) CA DWR (2000) and CSU Chico (2003) 1 22 Integer 1973_id Landuse classification for landuse dataset (2 represents urban pumpage) CA DWR (2000) and USGS (1990) 1 22 Integer 1998_id Landuse classification for landuse dataset (2 represents urban pumpage) CA DWR (2000) and Davis and others (1998) 1 22 Integer 2000_id Landuse classification for landuse dataset (2 represents urban pumpage) CA DWR (2000) 1 22 Integer ptop_lay Upper model layer in which virtual well is perforated dataset originator 1 9 Integer pbot_lay Bottom model layer in which virtual well is perforated in dataset originator 1 10 Integer SUBREGN Water Balance Subregion (WBS) to which cell belongs dataset originator 1 21 Integer U.S. Geological Survey Michael Ierardi IT Specialist mailing and physical

445 National Center

Reston Virginia 20192 USA 1-888-275-8747 (1-888-ASK-USGS) mierardi@usgs.gov Downloadable Data Digital geospatial datasets for the location of virtual wells used for urban (municipal and industrial use) pumpage in the Central Valley Hydrologic Model (CVHM). Although these data have been used by the U.S. Geological Survey, U.S. Department of the Interior, no warranty expressed or implied is made by the U.S. Geological Survey as to the accuracy of the data. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the U.S. Geological Survey in the use of these data, software, or related materials. The use of firm, trade, or brand names in this report is for identification purposes only and does not constitute endorsement by the U.S. Geological Survey. The names mentioned in this document may be trademarks or registered trademarks of their respective trademark owners. SHP ESRI Shapefile 0.045 https://water.usgs.gov/GIS/dsdl/pp1766_municipal_pumpage.zip None. This dataset is provided by the USGS as a public service. 2011 20201117 U.S. Geological Survey Michael Ierardi IT Specialist mailing and physical address

445 National Center

Reston VA 20192 USA 1-888-275-8747 (1-888-ASK-USGS) mierardi@usgs.gov FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998