San Diego River Valley
Statistics
- Basin Name
- San Diego River Valley
- Basin Number
- 9-015
- SGMA Basin Priority
- Very Low
- Critically Overdrafted
- No
- Status
- Not Subject to SGMA
- DWR Region & POC
Southern Region
- Number of Wells
- 117
- Hydrologic Region Name
- South Coast Hydrologic Region
- Counties
- San Diego
- Adjacent Basins
At-A-Glance
Located in California’s hydrologic region, the San Diego River Valley is 9,873 acres in size. This Very Low priority basin is home to an estimated 45,800 people (2010 value), which have been at a rate of 14.97. San Diego River Valley is a(n) basin with approximately 117 wells, of which approximately 6 are water supply wells. Groundwater accounts for approximately 3.18 percent of the basin’s water supply.
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:
Groundwater level
- 1) CASGEM/WDL/GWIDS: No data or data insufficent to determine GWL status. Source: DWR
- 2) No available documention on groundwater level decline past or present in the basin
Salt intrusion –
- 1) The groundwater is characterized with moderate to high levels of salinity. A recent study by USGS evaluated the sources and movement of saline groundwater in these groundwater basins (USGS 2013b). The chloride concentrations ranged from 57 to 39,400 mg/L. The sources of salinity were natural geologic sources and sea water intrusion. Source: Chapter 7, EIS, Coordinated Long-Term Operation of the Central Valley Project and State Water Project, U.S. Bureau of Reclamation
GSA Information
