{"accessLevel": "public", "bureauCode": ["010:12"], "contactPoint": {"@type": "vcard:Contact", "fn": "Nevada Water Science Center", "hasEmail": "mailto:GS-W-NVcrs_Webmaster@usgs.gov"}, "description": "This data set consists of water-table contours for Nevada.   These data were created as part of an \neffort to provide statewide information on water table and depth to ground water for Nevada.\n\t\t\t\nThe data set was constructed from water-table contours published in 38 reports between 1961 and 2004.  \nData used to make the contours were collected from 1947 to 2004.  The reports used were a subset of \n104 reports identified during a literature search of published water-table and depth to ground-water contours.  \nReports used in this data set were chosen based on a scoring system using four criteria: the percentage \nof the hydrographic area (HA) with contours, the contour interval, the date of the water-level measurements, \nand whether control points were plotted with the contours.  For example, more current water-level \nmeasurements were given a higher score than older data and contours covering a high percentage of the \nHA were scored higher than those that covered less area. If not already available digitally, the contours \nwere digitized from the selected report and combined to make the statewide data set.  Although depth \nto ground-water contours were available from several of the reports, the selection process resulted in \nonly water-table contours being used in all areas except HA 153, Diamond Valley.  Depth to ground-\nwater contours based on well measurements from the year 2001 were used in this HA because a large \nchange in ground-water levels had occurred since ground-water altitude contours were published in 1968.  \nTo generate the final water-table data set, digitized contours from the selected reports were merged into \na single data set.  Contours from a single report were chosen where data from different reports covered \nthe same HA.  Where few or no contours were available for an HA, data from a statewide report, Bedinger \nand others (see the source citations) was used to fill in the gaps. The final data set consists of contours \nrepresenting water levels measured between 1947 and 2004, most of which are in unconfined to semiconfined \nunconsolidated sediment aquifers.", "distribution": [{"@type": "dcat:Distribution", "accessURL": "https://doi.org/10.5066/P9OGRY1D", "description": "Landing page for access to the data", "format": "XML", "mediaType": "application/http", "title": "Digital Data"}, {"@type": "dcat:Distribution", "description": "The metadata original format", "downloadURL": "https://data.usgs.gov/datacatalog/metadata/USGS.ada657df-470b-4a59-a066-09dadc2fa219.xml", "format": "XML", "mediaType": "text/xml", "title": "Original Metadata"}], "identifier": "http://datainventory.doi.gov/id/dataset/USGS_ada657df-470b-4a59-a066-09dadc2fa219", "keyword": ["Great Basin", "Nevada", "USGS:ada657df-470b-4a59-a066-09dadc2fa219", "contour", "ground water", "inlandWaters", "water table"], "modified": "2020-11-17T00:00:00Z", "publisher": {"@type": "org:Organization", "name": "U.S. Geological Survey"}, "spatial": "-120.088770, 35.332667, -113.844814, 42.005002", "theme": ["geospatial"], "title": "Water-table contours of Nevada"}