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2016. California. Department of Water Resources. This polygon shapefile contains the boundaries of 517 groundwater basins and subbasins as defined by the California Department of Water Resources a... California. Department of Water Resources.
2016. County of San Mateo Information Services Department and California. Department of Water Resources. Ground Water Basins in San Mateo County. Source: California Department of Water Resources. This layer is part of the San Mateo County Sea Level Ris... County of San Mateo Information Services Department.