Buto, S.G. 2016 vector digital data Reston, VA U.S. Geological Survey https://doi.org/10.5066/F7P84918 Harrill, J.R. 1968 report Water Resources Bulletin 35 Carson City, NV State of Nevada Department of Conservation and Natural Resources https://images.water.nv.gov/images/publications/water%20resources%20bulletins/Bulletin35.pdf This dataset represents "phreatophyte areas" mapped as part of an analysis of irrigation pumping in Diamond Valley, Nevada published in 1968. The data were digitized for comparison with mapping of groundwater discharge areas done in 2011 as part of a groundwater study in these valleys published in 2016. This data set was created as part of a U.S. Geological Survey study. The intended uses of this data set include, but are not limited to, natural resource modeling, mapping, and visualization applications. 1968 ground condition Complete None planned -116.077128819 -115.8649653170 40.159098398 39.775330662 ISO 19115 Topic Categories biota environment inlandWaters USGS Thesaurus inlandWaters Discharge Groundwater Groundwater Discharge Evapotranspiration Evaporation ET ET unit Phreatophyte USGS Metadata Identifier USGS:422b7a66-0ac5-4d69-9935-8f12fe604ce9 Geographic Names Information System Diamond Valley Eureka County Elko County Nevada Great Basin None Acknowledgment of the U.S. Geological Survey and Eureka County, Nevada 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 nonproprietary form, this metadata file may include some ArcGIS-specific terminology. These data are not intended to be used as a survey product and are for reference only. U.S. Geological Survey Nevada Water Science Center Public Information Officer Mailing and physical address

2730 N. Deer Run Road

Carson City NV 89701 USA (775)887-7600 (775)887-7629 https://water.usgs.gov/GIS/browse/NV_WRB35_gda.jpg Image of the Groundwater discharge area for Diamond Valley, Central Nevada, 1968 jpg Technical review of this database was done by Karen Hanson and Kimberly Jones of the U.S. Geological Survey Utah Water Science Center. Environment as of Metadata Creation: Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; ESRI ArcCatalog 10.2 (Build 3552) Service Pack [N/A] (Build [N/A]) Buto, S.G. 2016 vector digital data Reston, VA U.S. Geological Survey https://doi.org/10.5066/F7T151RK Rush, F.E. Everett, D.E. 1964 report Ground-water resources-reconnaissance series 30 Carson City, NV State of Nevada Department of Conservation and Natural Resources https://images.water.nv.gov/images/publications/recon%20reports/rpt30-monitor_antelope_kobeh_valley.pdf Mayers,C.J. Buto, S.G. 2016 vector digital data Reston, VA U.S. Geological Survey https://doi.org/10.5066/F71J97VZ Berger, D.L. Mayers, C.J. Garcia, C.A. Buto, S.G. Huntington, J.M. 2016 document United States Geological Survey Scientific Investigations Report SIR2016-5055 Reston, VA U.S. Geological Survey https://doi.org/10.3133/sir20165055 Buto, S.G. 2016 vector digital data Reston, VA U.S. Geological Survey https://doi.org/10.5066/F7JM27QV Berger, D.L. Mayers, C.J. Garcia, C.A. Buto, S.G. Huntington, J.M. 2016 document United States Geological Survey Scientific Investigations Report SIR2016-5055 Reston, VA U.S. Geological Survey https://doi.org/10.3133/sir20165055 Buto, S.G. Mayers,C.J. Smith, J.L. 2016 vector digital data Reston, VA U.S. Geological Survey https://doi.org/10.5066/F75B00K7 Berger, D.L. Mayers, C.J. Garcia, C.A. Buto, S.G. Huntington, J.M. 2016 document United States Geological Survey Scientific Investigations Report SIR2016-5055 Reston, VA U.S. Geological Survey https://doi.org/10.3133/sir20165055 Buto, S.G. Garcia, C.A. 2016 raster digital data Reston, VA U.S. Geological Survey https://doi.org/10.5066/F7930R9K Berger, D.L. Mayers, C.J. Garcia, C.A. Buto, S.G. Huntington, J.M. 2016 document United States Geological Survey Scientific Investigations Report SIR2016-5055 Reston, VA U.S. Geological Survey https://doi.org/10.3133/sir20165055 Buto, S.G. Garcia, C.A. 2016 raster digital data Reston, VA U.S. Geological Survey https://doi.org/10.5066/F7DV1H0J Berger, D.L. Mayers, C.J. Garcia, C.A. Buto, S.G. Huntington, J.M. 2016 document United States Geological Survey Scientific Investigations Report SIR2016-5055 Reston, VA U.S. Geological Survey https://doi.org/10.3133/sir20165055 All attempts were made to compare 100 percent of the digital attribute data to the original source map. Verification was done by visual comparison of the source using on-screen review. Frequency tests were run to check for unlabeled, misspelled, or inconsistent attributes. Corrections were made until comparisons determined 100 percent of the digital attribute data matched the original source map. The logical consistency topologically is clean. Polygon topology is present. Using ArcGIS tools and routines polygons were checked for gaps, overlaps, and missing features. Complete for Diamond Valley, 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 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 https://www.fgdc.gov/standards/projects/FGDC-standards-projects/accuracy/part3/chapter3 200 meters This boundary is the result of field interpretation of the location of the boundary between areas dominated by phreatophytic vegetation and areas dominated by xeric vegetation. No details of the field mapping procedures are documented in the source report. The source map was presented on a basemap of "U.S. Geological Survey Topographic quadrangle maps" of unreported scale. The scale bar presented on the plate indicates the plate was drawn at approximately 1:250,000-scale. The paper map was scanned and rectified to digital versions of the 1:24,000-scale U.S. Geological Survey topographic quadrangles. RMS error during rectification was reported at 15.3 meters. Taking all known and unknown sources of error into account, the horizontal positional accuracy is deductively estimated at 200 meters. Harrill, J.R. 1968 Paper Map Carson City, NV State of Nevada Department of Conservation and Natural Resources https://images.water.nv.gov/images/publications/water%20resources%20bulletins/Bulletin35.pdf 250000 paper map 1968 ground condition wrb35-plate2 Spatial and Attribute information U.S. Department of Agriculture 20020319 Raster Digital Data Set Fort Worth, TX U.S. Department of Agriculture https://gdg.sc.egov.usda.gov/ 24000 online unknown unknown source map Eureka DRG Spatial information U.S. Department of Agriculture 20020712 Raster Digital Data Set Fort Worth, TX U.S. Department of Agriculture https://gdg.sc.egov.usda.gov/ 24000 online unknown unknown source map Elko DRG Spatial information Plate 2 from Nevada Water Resources Bulletin Report 35 was scanned at 1200 dpi. The scanned document was georeferenced to digital raster graphics (DRG) of the U.S. Geological Survey 1:24,000-scale quadrangles covering Elko and Eureka Counties using tools available in ArcMap 10.2. The 1:24,000-scale DRGs were used for georeferencing as they were assumed to be the source of the basemap adapted for the plate. A total of 8 links were used to georeference the document. The georeferenced image was rectified using 2nd order polynomial transformation. Rectification resulted in an RMS error of 15.3 m. wrb35-plate2 Eureka DRG Elko DRG 20141112 wrb35-plate2Rectified Phreatophyte boundaries from the rectified plate were digitized to a line feature class. Topology was verified to ensure the line data did not contain dangles, overlaps, or improper intersections. Points containing attributes representing vegetation assemblages shown on the source map also were digitized. ArcGIS tools were used to convert the lines to a polygon feature class and verify the polygons had no overlapping or missing features. The points were used to populate polygon attributes at the time of conversion. wrb35-plate2Rectified 20141112 NV_WRB35_GDA Vector G-polygon 15 Transverse Mercator 0.9996 -117.0 0.0 500000.0 0.0 coordinate pair 0.0001 0.0001 Meters D_WGS_1984 WGS_1984 6378137.0 298.257223563 NV_WRB35_GDA_p Polygon features representing the outer boundary of groundwater discharge by phreatophytes for Diamond Valley, Nevada, 1968 user-defined OBJECTID Internal feature number. esri Sequential unique whole numbers that are automatically generated. SHAPE Feature geometry. esri Coordinates defining the features. ETUnit Vegetation assemblage depicted on Plate 2 of the source report user-defined Grasses Area of spring supported vegetation or mixed grasses Rush, 1968 Playa Area of Playa Rush, 1968 Shrub Area of mainly greasewood and rabbitbrush Rush, 1968 SHAPE_Length The length of the feature in internal units esri 1722.416324 286813.271655 meters SHAPE_Area The area of the feature in internal units esri 182090.411948 200940577.663393 Meters U.S. Geological Survey Michael Ierardi IT Specialist mailing address

445 National Center

Reston VA 20192 USA 1-888-275-8747 (1-888-ASK-USGS) mierardi@usgs.gov 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. File Geodatabase 10.2 Online accessible data WinZip 0.57 https://water.usgs.gov/GIS/dsdl/NV_WRB35_GDA.zip Shapefile 10.2 Spatial and attribute information WinZip 0.62 https://water.usgs.gov/GIS/dsdl/NV_WRB35_GDA.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 USA 1-888-275-8747 (1-888-ASK-USGS) mierardi@usgs.gov FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998