{ "culture": "en-US", "name": "GAMA_GIS_Wells", "guid": "1FA58D7A-17EA-43AC-830B-611EE353326F", "catalogPath": "", "snippet": "All well locations from all datasets standardized on the GAMA Program's Groundwater Information System (GAMA GIS). This is a replacement of previous versions, updated quarterly. Authoritative version. WGS 84.", "description": "

All well locations from all datasets standardized on the GAMA Program's Groundwater Information System (GAMA GIS). This is a replacement of previous versions, updated quarterly. Authoritative version. WGS 84. <\/span><\/p>

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All groundwater wells on GAMA Groundwater Information System, accessed July 7, 2025. <\/span><\/p>

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Sources of data include (as indicated in GM_DATA_SOURCE field): <\/span><\/p>

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GeoTracker: Wells sampled under regulated activities like cleanup and remediation. These are accessible through the California State Water Resources Control Board GeoTracker web site. <\/span><\/p>

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USGS: Wells sampled and analyzed by the U.S. Geological Survey (USGS) through the Groundwater Ambient Monitoring and Assessment (GAMA) Program Priority Basin Project. <\/span><\/p>

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GAMA: Wells sampled by California State Water Resources Control Board staff for the GAMA Program Domestic Well Project. <\/span><\/p>

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DDW: Division of Drinking Water (DDW) wells sampled and regulated for delivered water quality under DDW oversight. <\/span><\/p>

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DPR: Wells sampled by the Department of Pesticide Regulation (DPR) groundwater program. <\/span><\/p>

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WDL: Wells in the Department of Water Resources (DWR) water quality sampling network in their water data library. <\/span><\/p>

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LLNL: Wells sampled for groundwater age, isotopes, or noble gas for the GAMA Program by Lawrence Livermore National Laboratory (LLNL). <\/span><\/p>

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NWIS: Wells sampled by the USGS and accessible via the National Water Information System (NWIS). <\/span><\/p>

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UC Davis: Location of wells gathered from multiple local entities for use in the UC Davis Nitrate Report, under agreement with the GAMA Program. <\/span><\/p>

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LOCALGW: Wells sampled under various local groundwater projects. As of July 30, 2019, this only includes the domestic sampling completed by the Central Coast Regional Water Quality Control Board. <\/span><\/p>

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GAMA_LOCALGW: Wells sampled under local groundwater projects, generally sampled from private wells from various private and governmental organizations. Data was submitted through the GAMA Data Connection Portal. <\/span><\/p>

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The field, GM_DATASET_NAME can also help explain the source of the dataset. <\/span><\/p>

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Direct any questions to: GAMA@waterboards.ca.gov.<\/span><\/p><\/div><\/div><\/div><\/div>", "summary": "All well locations from all datasets standardized on the GAMA Program's Groundwater Information System (GAMA GIS). This is a replacement of previous versions, updated quarterly. Authoritative version. WGS 84.", "title": "GAMA GIS Wells", "tags": [ "GAMA", "SWRCB", "groundwater", "water quality" ], "type": "Feature Service", "typeKeywords": [ "ArcGIS", "ArcGIS Server", "Data", "Feature Access", "Feature Service", "providerSDS", "Public Data Collection", "Service" ], "thumbnail": "thumbnail/thumbnail.png", "url": "", "extent": [ [ -124.355466000177, 32.5416409998804 ], [ -114.133384000061, 41.9985000001828 ] ], "minScale": 0, "maxScale": 1.7976931348623157E308, "spatialReference": "WGS_1984_Web_Mercator_Auxiliary_Sphere", "accessInformation": "Created by GAMA Staff from GAMA Groundwater Information System: https://gamagroundwater.waterboards.ca.gov/gama/gamamap/public/.", "licenseInfo": "

For public use. For questions, please contact WB.GAMA@waterboards.ca.gov.<\/span><\/p><\/div><\/div><\/div><\/div>", "portalUrl": "" }