San Diego River Valley

Source: CA DWR

San Diego River Valley


  • Basin Name
  • San Diego River Valley
  • Basin Number
  • 9-015
  • SGMA Basin Priority
  • Very Low
  • Critically Overdrafted
  • No
  • Hydrologic Region Name
  • Southern California
  • Counties
  • San Diego
  • Adjacent Basins


Located in California’s hydrologic region, the San Diego River Valley is 9,873.37 acres in size. This Very Low priority basin is home to an estimated 40,629 people (2010 value), which have been at a rate of 14.97.

San Diego River Valley is a(n) basin with approximately 91 wells, of which approximately 5 are water supply wells. Groundwater accounts for approximately 4 percent of the basin’s water supply.

Source: CA DWR

Basin Notes

2004: Bulletin 118 basin description

2014: CASGEM basin prioritization – medium. Comments: High nitrates, iron and manganese treatment is required. High TDS ( >3,000 mg/l) in western portion of basin

2018: Draft basin priority – very low. Comments: no documentation available on groundwater levels/declines. Salt intrusion –

2019: Basin boundary modification. Per DWR: It “follows geologic contacts on a 1:100,000 scale qualified map, which is a more detailed mapping scale than the 1:250,000 scale maps used in 2016. Colluvium deposits are excluded from the upper reaches of the proposed basin. These deposits are thin, dry layers above non-permeable, consolidated deposits.” Phase 2 draft priority: very low

GSA Information

Author: Admin Think

OpenThink offers full-service design, web development, and website security services.