Rose L. Medina 1999 map Carson City, NV U.S. Geological Survey http://water.usgs.gov/lookup/getspatial?wrir99-4188_cv_x David L. Berger and Rose L. Medina 1999 Water-Resources Investigations Report 99-4188 Carson City, NV U.S. Geological Survey This data set contains the monitoring sites where water levels were collected and used to develop a spatial ground-water data base in Carson Valley, west-central Nevada. The ground-water data were collected from 48 shallow wells during a 3 week period in April and May 1998. This data set was created to display the ground-water monitoring sites used to develop a spatial ground-water data base in Carson Valley, west-central Nevada. Ground-water data includes depths to water and ground-water altitudes. Introduction This data set, created in cooperation with the State of Nevada Division of Environmental Protection, contains ground-water monitoring sites developed to be included in a spatial ground-water data base in Carson Valley, west-central Nevada. Location of the monitoring sites were determined in the field using a hand-held global positioning system (GPS). The data set was created in 1998, from a text file of latitude and longitude values. Land-surface altitude for each monitoring site was determined from 1:4,800-scale topographic maps. Water-level measurements were made using standard procedures for making water-level measurements with hand-held steel tapes. Reviews The digital data in this data set has gone through a rigorous, multi-level, quality-control process that ensures the data set is a fair representation of the source map. If errors are found in this data set, it will be appreciated if the user would pass this information to the Metadata_Contact. Two reviews were done. The reviewers were asked to check metadata and other documentation files for completeness and accuracy. Reviewers were asked to check the topological consistency, tolerances, projections, and geographic extent. References FIPS PUB 5-2, 1987 May 28, Codes for the identification of the states, the District of Columbia and the outlying areas of the United States, and associated areas, National Institue of Standards and Technology (NIST). FIPS PUB 6-4, 1990 August 31, Counties and equivalent entities of the United States, its possessions, and associated areas, NIST. Genge Aerial Surveys, 1977, Carson Valley aerial mapping project: Sacramento, Calif., 51 sheets, scale 1:4800. Notes 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 ARC/INFO format, this metadata file may include some ARC/INFO-specific terminology. April/May 1998 ground condition Complete None Planned -119.84896783 -119.63578156 39.08198128 38.84573181 none monitoring site water level below land surface inlandWaters screened interval water-level altitude none Carson Valley west-central Nevada Douglas County Great Basin HA105 None. Use with similarly scaled data. Acknowledgment of the U.S. Geological Survey and the State of Nevada Division of Environmental Protection would be appreciated in any products derived from this data. Rose L. Medina U.S. Geological Survey Physical Scientist mailing and physical address

333 W. Nye Ln.

Carson City NV 89706 USA 1-888-275-8747 (775) 887-7629 rlmedina@usgs.gov Compilation of this data set and the associated metadata was done in cooperation with the State of Nevada Division of Environmental Protection. None Unclassified None IRIX64, 6.4, IP27 UNIX ARC/INFO version 7.2.1 Rose L. Medina 1999 map Carson City, NV U.S. Geological Survey http://water.usgs.gov/lookup/getspatial?wrir99-4188_dtw David L. Berger and Rose L. Medina 1999 Water-Resources Investigations Report 99-4188 Carson City, NV U.S. Geological Survey Rose L. Medina 1999 map Carson City, NV U.S. Geological Survey http://water.usgs.gov/lookup/getspatial?wrir99-4188_wla David L. Berger and Rose L. Medina 1999 Water-Resources Investigations Report 99-4188 Carson City, NV U.S. Geological Survey Three visual checks were done to verify that the digital attribute data was a fair representation of the original source map. See Explanation. Where present, is described with each attribute defined in the Entity_and_Attribute Section. Point features present. See Supplemental_Information. Three visual checks were done to verify that sites were located in the correct area. 32 meters The monitoring sites were created from a latitude and longitude text file. The error inherent from the latitude and longitude is at least 32 meters on the x-y. Errors derived from the quality of the original map or found during the automation process also can affect the accuracy of this data. The maximum error is estimated at 35 meters on the x-y. David L. Berger Unpublished material map 62500 mylar separate 1998 ground condition on April/May 1998 none The water-level altitude contours data set was digitized from this mylar base map. Latitude and longitude values for the monitoring sites were recorded, in the field, using GPS in May 1998. 199805 1. Latitude, longitude, and additional attributes were placed in a delimited ASCII text file. 2. Using the UNIX command RDB2COVER, the ASCII file was projected into an ARC/INFO point data set. 3. Point topology was built. 4. The locations and attributes were verified. 19980610 Point Point 48 Universal Transverse Mercator 11 coordinate pair 2.571 2.571 Meters North American Datum of 1927 Clarke 1866 6378206.4 294.98 CV_X.PAT Point Attribute Table ARC/INFO(R) GIS Software AREA Area of polygon/region in square coverage units Attribute_Definition_Source: Computed Computed Positive real numbers n/a n/a PERIMETER Perimeter of polygon/region in coverage units Computed Positive real numbers n/a n/a CV_X# Internal feature number Computed Sequential unique positive integer n/a n/a CV_X-ID User-assigned feature number User defined Integer n/a n/a NUM Unique identifier User-assigned number 1 48 SITE Site identification number National Water Inventory System (NWIS) alphanumeric characters n/a n/a LAT Latitude value of site NWIS alphanumeric characters n/a n/a LONG Longitude value of site NWIS alphanumeric characters n/a n/a DTW-FT Depth to water, in feet NWIS 0.56 111.97 0.05 The measurement has an accuracy of +/- 0.05 ft and was derived from a hand-held steel tape, graduated in feet, tenths of feet, and hundredths of feet. LSA-FT Land surface altitude, in feet NWIS 4638 5160 2.5 The measurement has an accuracy of +/- 2.5 ft and was rounded to the nearest foot. It was derived from 1:4,800-scale topographic maps (Genge Aerial Surveys, 1977). WLA-FT Water level altitude, in feet Computed 4637 5059 2.5 The measurement has an accuracy of +/- 2.5 ft and was rounded to the nearest foot. It was derived from the difference between land-surface altitude and depth to water. TOP-SI Top of the screened interval, in feet NWIS 2 156 -1 No value given for the top of the screened interval. BOTTOM-SI Bottom of the screened interval, in feet NWIS -1 No value given for the bottom of the screened interval. User defined 11 176 DATE-MEASURED Date measurement was taken, YYYYMMDD. User-defined 19980429 19980508 FIPS Federal Information Processing Standards (FIPS) code NIST 32005 Nevada, Douglas County FIPS, 1987 HYD-AREA Hydrographic Area Code NWIS 105 Carson Valley NWIS HUC 8 digit Hydrologic Unit Code NWIS 16050201 Carson Valley NWIS U.S. Geological Survey Ask USGS - Water Webserver Team mailing

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Reston VA 20192 1-888-275-8747 (1-888-ASK-USGS) http://water.usgs.gov/user_feedback_form.html 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. Export Full data set zipped 1 http://water.usgs.gov/GIS/dsdl/wrir99-4188_cv_x.e00.gz SDTS Full data set zipped 1 http://water.usgs.gov/GIS/dsdl/wrir99-4188_cv_x.sdts.tar.gz None. This dataset is provided by USGS as a public service. 20041108 U.S. Geological Survey Ask USGS -- Water Webserver Team mailing

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Reston VA 20192 1-888-275-8747 (1-888-ASK-USGS) http://answers.usgs.gov/cgi-bin/gsanswers?pemail=h2oteam&subject=GIS+Dataset+wrir99-4188_cv_x FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998