Source: CA DWR



  • Basin Name
  • Lobos
  • Basin Number
  • 2-038
  • SGMA Basin Priority
  • Very Low
  • Critically Overdrafted
  • No
  • Hydrologic Region Name
  • Counties
  • San Francisco
  • Adjacent Basins
  • Westside 2-035, Marina 2-039, Downtown San Francisco 2-040,


Located in California’s hydrologic region, the Lobos is 2,361 acres in size. This Very Low priority basin is home to an estimated 59,736 people (2010 value), which have been at a rate of -2.93.

Lobos is a(n) basin with approximately 4 wells, of which approximately 0 are water supply wells. Groundwater accounts for approximately 0 percent of the basin’s water supply.

Source: CA DWR

Basin Notes

2003: Bulletin 118 basin description

2014: CASGEM basin prioritization – very low. Comment: Limited water quality data but basins beneath the entire San Francisco peninsula are similar (Phillips et al 1993). May contain high concentrations of nitrates, chloride, boron and TDS (B-118)

2018: Draft basin priority – very low. Comments:

Groundwater level

  • 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

2018 Final Basin Prioritization: Basin remains unchanged at very low priority.

GSA Information


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