San Francisco's Groundwater Basins
Our groundwater management program ensures that local groundwater resources designated for current or future beneficial use are properly protected to prevent overdraft, pollution or contamination. There are 7 groundwater basins in San Francisco.
Groundwater Monitoring and Data Management
The Westside Basin Groundwater Monitoring Program provides information summarizing basin-wide groundwater pumping, groundwater levels and quality in the different aquifer systems within the basin, and surface water conditions, most notably in Lake Merced. The program also monitors physical and chemical changes in the groundwater system resulting from current pumping at the San Francisco Zoo and Golden Gate Park, the San Francisco Groundwater Supply Project wells, and the proposed Regional Groundwater Storage and Recovery Project in northern San Mateo County.
The current Annual Groundwater Monitoring Report, Westside Basin is available here.
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