San Fernando Valley
Statistics
- Basin Name
- San Fernando Valley
- Basin Number
- 4-012
- SGMA Basin Priority
- Very Low
- Critically Overdrafted
- No
- Hydrologic Region Name
- South Coast
- Counties
- Los Angeles
- Adjacent Basins
At-A-Glance
Located in California’s South Coast hydrologic region, the San Fernando Valley is 144,837 acres in size. This Very Low priority basin is home to an estimated 1,743,187 people (2010 value), which have been at a rate of 18.89. San Fernando Valley is a(n) basin with approximately 475 wells, of which approximately 101 are water supply wells. Groundwater accounts for approximately 19.08 percent of the basin’s water supply.
Basin Notes
1979: May 12 — California Supreme Court affirms City of Los Angeles pueblo water rights to groundwater in basin derived from precipitation. History of the decision and watermaster links: Upper Los Angeles River Area Watermaster
1980-89: Contamination of groundwater and Superfund site established in Burbank, US Environmental Protection Agency (USEPA)
2003: Bulletin 118 basin description
2008: An Implementation Blueprint for Enhancing Groundwater Recharge in the San Fernando Basin, University of Southern California
2012: Groundwater Quality in the San Fernando–San Gabriel Groundwater Basins, California, US Geological Survey
2014: CASGEM basin prioritization – medium. Comments: Some public supply wells have shown contamination per B118
2016: Watermaster report, annual ULARA Watermaster reports
2018: Draft basin prioritization – Very Low. Comments:
- 1) CASGEM/WDL/GWIDS: Longterm hydrographs show groundwater level decline. Source: DWR
- 2) Upper Los Angeles River Area Watermaster notes decline
Basin is 98.98% adjudicated 2018 Final Basin Prioritization: Very Low.
San Fernando Valley Groundwater Remediation Program, Los Angeles Department of Water and Power
2023: San Fernando Valley Groundwater Remediation, West Coast Aerial Photography