- Basin Name
- Visitacion Valley
- Basin Number
- SGMA Basin Priority
- Very Low
- Critically Overdrafted
- Hydrologic Region Name
- San Francisco Bay Hydrologic Region
- San Francisco, San Mateo
Located in California’s hydrologic region, the Visitacion Valley is 5,831 acres in size. This Very Low priority basin is home to an estimated 31,853 people (2010 value), which have been at a rate of 12.52.
Visitacion Valley is a(n) basin with approximately 3 wells, of which approximately 0 are water supply wells. Groundwater accounts for approximately 9.72 percent of the basin’s water supply.
2014: CASGEM basin prioritization – very low
2018: Draft basin priority – very low. Comments –
- 1) CASGEM/WDL/GWIDS: No data or data insufficent to determine GWL status. Source: DWR
- 2) No available documentation on groundwater level decline past or present in the basin
Salt intrusion –
- 1) Natural sources of TDS to groundwater in the San Francisco Bay study unit (Marina, Lobos, Downtown, Islais Valley, South San Francisco, Visitacion Valley, Westside, and the Santa Clara Valley groundwater basins) include saltwater intrusion from the Bay and interaction between recharge water and aquifer materials derived from marine or estuarine sediments. On the east side of the Bay, high and moderate concentrations of TDS were detected in areas with a history of intrusion of water from the Bay in response to pumping of freshwater from aquifers. Using surface water–remediated. Source: Groundwater Quality in the San Francisco Bay Groundwater Basins, California, USGS 2012
2018 Final Basin Prioritization: Basin status remains unchanged at very low priority.