Water-table contours of Nevada

Metadata Updated: December 11, 2017

This data set consists of water-table contours for Nevada. These data were created as part of an effort to provide statewide information on water table and depth to ground water for Nevada. The data set was constructed from water-table contours published in 38 reports between 1961 and 2004. Data used to make the contours were collected from 1947 to 2004. The reports used were a subset of 104 reports identified during a literature search of published water-table and depth to ground-water contours. Reports used in this data set were chosen based on a scoring system using four criteria: the percentage of the hydrographic area (HA) with contours, the contour interval, the date of the water-level measurements, and whether control points were plotted with the contours. For example, more current water-level measurements were given a higher score than older data and contours covering a high percentage of the HA were scored higher than those that covered less area. If not already available digitally, the contours were digitized from the selected report and combined to make the statewide data set. Although depth to ground-water contours were available from several of the reports, the selection process resulted in only water-table contours being used in all areas except HA 153, Diamond Valley. Depth to ground-water contours based on well measurements from the year 2001 were used in this HA because a large change in ground-water levels had occurred since ground-water altitude contours were published in 1968. To generate the final water-table data set, digitized contours from the selected reports were merged into a single data set. Contours from a single report were chosen where data from different reports covered the same HA. Where few or no contours were available for an HA, data from a statewide report, Bedinger and others (see the source citations) was used to fill in the gaps. The final data set consists of contours representing water levels measured between 1947 and 2004, most of which are in unconfined to semiconfined unconsolidated sediment aquifers.

Access & Use Information

License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

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Dates

Metadata Date May 8, 2006
Metadata Created Date December 1, 2017
Metadata Updated Date December 11, 2017
Reference Date(s) January 1, 2006 (publication)
Frequency Of Update notPlanned
Frequency Of Update notPlanned

Metadata Source

Harvested from DOI CKAN Harvest Source

Graphic Preview

Image of the water-table contours of Nevada

Additional Metadata

Resource Type Dataset
Metadata Date May 8, 2006
Metadata Created Date December 1, 2017
Metadata Updated Date December 11, 2017
Reference Date(s) January 1, 2006 (publication)
Responsible Party U.S. Geological Survey (Point of Contact)
Contact Email
Access Constraints Use Constraints: Although this Federal Geographic Data Committee (FGDC) compliant metadata file is intended to document the data set in nonproprietary form, as well as ArcGIS format, 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 purposes only. Acknowledgment of the U.S. Geological Survey and the Nevada Division of Environmental Protection would be appreciated in products derived from these data., Access Constraints: none
Bbox East Long -113.844814
Bbox North Lat 42.005002
Bbox South Lat 35.332667
Bbox West Long -120.088770
Coupled Resource
Extras Rollup {"bbox-east-long": "-113.844814", "resource-type": "dataset", "bbox-north-lat": "42.005002", "coupled-resource": "[]", "graphic-preview-type": "jpg", "guid": "", "spatial_harvester": "true", "bbox-south-lat": "35.332667", "spatial-reference-system": "", "graphic-preview-file": "https://water.usgs.gov/GIS/browse/sir2006-5100_wanv_l.jpg", "spatial": "{\"type\": \"Polygon\", \"coordinates\": [[[-120.08877, 35.332667], [-113.844814, 35.332667], [-113.844814, 42.005002], [-120.08877, 42.005002], [-120.08877, 35.332667]]]}", "progress": "completed", "access_constraints": "[\"Use Constraints: Although this Federal Geographic Data Committee (FGDC) compliant metadata file is intended to document the data set in nonproprietary form, as well as ArcGIS format, 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 purposes only. Acknowledgment of the U.S. Geological Survey and the Nevada Division of Environmental Protection would be appreciated in products derived from these data.\", \"Access Constraints: none\"]", "temporal-extent-begin": "1947-01-01", "contact-email": "GS-W-NVpublic-info@usgs.gov", "bbox-west-long": "-120.088770", "metadata-date": "2006-05-08", "dataset-reference-date": "[{\"type\": \"publication\", \"value\": \"2006-01-01\"}]", "graphic-preview-description": "Image of the water-table contours of Nevada", "frequency-of-update": "notPlanned", "licence": "[\"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 these data, software, or related materials.\\n\\nThe 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.\"]", "metadata_type": "geospatial", "responsible-party": "[{\"name\": \"U.S. Geological Survey\", \"roles\": [\"pointOfContact\"]}]", "temporal-extent-end": "2004-01-01", "spatial-data-service-type": "", "metadata-language": ""}
Frequency Of Update notPlanned
Graphic Preview Description Image of the water-table contours of Nevada
Graphic Preview File https://water.usgs.gov/GIS/browse/sir2006-5100_wanv_l.jpg
Graphic Preview Type jpg
Guid
Harvest Object Id d95da9a9-da7a-4dc6-9cb2-b8552da88682
Harvest Source Id 1f3ebea5-58d2-4aaa-85a0-e7ebda3074e7
Harvest Source Title DOI CKAN Harvest Source
Licence 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 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.
Metadata Language
Metadata Type geospatial
Progress completed
Spatial Data Service Type
Spatial Reference System
Spatial Harvester true
Temporal Extent Begin 1947-01-01
Temporal Extent End 2004-01-01

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