Jena M. Huntington Rose L. Medina 2014 vector digital data Reston, Virginia U.S. Geological Survey https://water.usgs.gov/lookup/getspatial?sir2014_5152_Potentiometric Jena M. Huntington C. Amanda Garcia Michael R. Rosen 2014 document U.S. Geological Survey Scientific Investigations Report SIR 2014-5152 Reston, Virginia U.S. Geological Survey https://pubs.usgs.gov/sir/2014/5152 This data set contains the potentiometric water-level altitude contours representing the 2009 potentiometric surface of the basin fill groundwater system of Dixie Valley, west-central Nevada. This data set was created as part of a U.S. Geological Survey study, done in cooperation with the Bureau of Reclamation. The intended uses of these data include, but are not limited to, natural resource modeling, mapping, and visualization applications. 19510823 20120719 ground condition Complete None planned -118.328891 -117.603369 40.106709 39.217023 ISO 19115 Topic Categories inlandWaters elevation geoscientificInformation USGS Thesaurus Water-level altitude Groundwater Potentiometric surface Potentiometric contour Geographic Names Information System Nevada Great Basin West-central Nevada Dixie Valley None 2012 1951 USGS Metadata Identifier USGS:ab0eb6f0-3ad4-444f-a1d0-ce4d25e94f61 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 and related materials. 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. Acknowledgement of the U.S. Geological Survey and the Bureau of Reclamation would be appreciated in products derived from these data. Although this Federal Geographic Data Committee (FGDC) compliant metadata file is intended to document the data set in non-proprietary form, this metadata file may include some ArcGIS-specific terminology. These data are not intended to result in exact or site specific prediction of water-level altitude or depth to ground water. These data are not intended to be used as a survey product and are for reference only. U.S. Geological Survey Public Information mailing

2730 N. Deer Run Road

Carson City NV 89706 US (775) 887-7600 GS-W-NVcrs_Webmaster@usgs.gov https://water.usgs.gov/GIS/browse/sir2014_5152_Potentiometric.jpg Illustration of data set jpg Compilation of this data set and the associated metadata was done in cooperation with the Bureau of Reclamation. Technical review of these data was done by Toby L. Welborn and Tim S. McKinney of the U.S. Geological Survey. Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; Esri ArcGIS 10.2.2.3552 Jena M. Huntington Rose L. Medina 2014 vector digital data Reston, Virginia U.S. Geological Survey https://water.usgs.gov/lookup/getspatial?sir2014_5152_GWFlow Jena M. Huntington C. Amanda Garcia Michael R. Rosen 2014 document U.S. Geological Survey Scientific Investigations Report SIR 2014-5152 Reston, Virginia U.S. Geological Survey https://pubs.usgs.gov/sir/2014/5152 Verification was done by interactive on-screen review. Frequency tests were performed on all feature class attributes to check that no features were unlabeled, misspelled, or inconsistent. Corrections were made until one visual comparison, combined with on-screen review, determined 100 percent of the digital attribute data was correct. The logical consistency topologically is clean. Chain-node topology is present. Using ArcGIS tools and routines, all lines were checked for node errors, overshoots, undershoots, dangles, intersections, and duplicate features. Complete for Dixie Valley, west-central Nevada National map accuracy standards (NMAS) established for the United States in 1947 (U.S. Geological Survey, 1988) state that no more than 10 percent of features shall be more than 1/50th of an inch from their intended location on maps of scale smaller than 1:20,000. National standards for spatial data accuracy (NSSDA) published by the Federal Geographic Data Committee (FGDC) in 1998 relate the NMAS to the digital geospatial data standard by multiplying the NMAS accuracy by a factor of 1.1406 (Federal Geographic Data Committee, 1998) resulting in expected error in the geospatial data at standard mapping scales as follows: 1: 24,000-scale map - 14 meters 1: 62,500-scale map - 36 meters 1: 100,000-scale map - 58 meters 1: 250,000-scale map - 145 meters 1: 500,000-scale map - 290 meters 1:1,000,000-scale map - 579 meters All attempts were made to verify 100 percent of the digital spatial data with supporting source datasets. Two visual checks were done to verify that the digital data was a fair representation of hydrologic conditions in the study area. References Cited: U.S. Geological Survey, 1988, National mapping program technical instructions --- Part 2: Specifications, Standards for Digital Line Graphs: U.S. Geological Survey, 56 p. Federal Geographic Data Committee, Subcommittee for Base Cartographic data, 1998, Geospatial Positioning Accuracy Standards, Part 3: National Standard for Spatial Data Accuracy, FGDC-STD-007.3-1998, last accessed 03/29/2007 at URL http://www.fgdc.gov/standards/projects/FGDC-standards-projects/accuracy/part3/chapter3 50 Errors resulting from source map quality, automation processes, and scale resolution can impact the accuracy of data. Errors resulting from the quality of the source map and automation processes are unknown. Taking all known and unknown sources of error into account the horizontal positional accuracy is deductively estimated at 50 meters. U.S. Geological Survey Unknown tabular digital data onLine 19510823 20120719 ground condition NWIS This dataset contains the spatial and tabular information for selected wells and springs in Dixie Valley. U.S. Geological Survey 20040101 vector digital data 500000 onLine 20040101 publication date hydgeolnv This dataset contains the hydrogeologic units used to define the bedrock contacts and playa boundaries. Well and spring locations and water-level altitude measurements from fall 2009 (or closest to) were extracted from the USGS NWIS database. The data were converted from tabular format to a point feature class using the "Add XY Data" tool in ArcGIS ArcMap. NWIS 20120101 The ArcGIS Spatial Analyst "Spline" interpolation tool with the tension "spline type" was utilized to generate preliminary groundwater contours based on potentiometric water-level altitudes. Contours were then manually refined on-screen to reflect known hydrogeologic condidtions. NWIS hydgeolnv 20120101 Vector String 32 Transverse Mercator 0.9996 -117.0 0.0 500000.0 0.0 coordinate pair 0.000000002220024164500956 0.000000002220024164500956 meters D North American 1983 GRS 1980 6378137.0 298.257222101 SIR2014_5152_Potentiometric Line feature class ESRI OBJECTID Internal feature number. Esri Sequential unique whole numbers that are automatically generated. Shape Feature geometry. ESRI Coordinates defining the features. PotContourAlt_ft Water-table altitude, in feet (NAVD 1988) User-defined 3380 4200 Contour_Type Contour type User-defined Approximate The location of the contour is approximate and based on supporting data. User-defined Inferred The location of the contour is inferred and interpolated based on limited supporting data. User-defined Shape_Length Length of feature in internal units. Esri Positive real numbers that are automatically generated. U.S. Geological Survey Michael Ierardi IT Specialist mailing

445 National Center

Reston VA 20192 1-888-275-8747 (1-888-ASK-USGS) mierardi@usgs.gov Although this data set has 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 and related materials. 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 this data, software, or related materials. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. File Geodatabase 10.2 Spatial and attribute information Winzip 1 https://water.usgs.gov/GIS/dsdl/sir2014_5152.zip Shapefile NA Spatial and attribute information Winzip 1 https://water.usgs.gov/GIS/dsdl/sir2014_5152.zip None. This dataset is provided by USGS as a public service. 20201117 U.S. Geological Survey Michael Ierardi IT Specialist mailing and physical address

445 National Center

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