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Layer: Groundwater Basins (ID: 116)

Parent Layer: Assets

Name: Groundwater Basins

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Type: Raster Layer

Geometry Type: null

Description: Groundwater basins were previously delineated by California Department of Water Resources. The bulletin 118 report describes groundwater resources and provides GIS data on groundwater basins. In addition monitoring of groundwater quality is conducted by the State Water Board under the Groundwater Ambient Monitoring Assessment (GAMA) Program. The Groundwater Quality Monitoring Act of 2001 (Sections 10780-10782.3 of the Water Code) requires the state to monitor and assess the quality of all priority groundwater basins that account for over 90% of all groundwater used in the state. The plan prioritizes groundwater basins for assessment based on groundwater use across the state. The State Water Board provided information on level of groundwater use that was linked to the DWR groundwater basins GIS layer. Additional information was provided that identified hydrogeologically vulnerable areas. These are typically high use groundwater basins that are vulnerable to contamination.

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Supported Query Formats: JSON, AMF

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