Sweetwater Reservoir

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Sweetwater Reservoir
Location San Diego County, California[1]
Coordinates 32°41′49″N 116°59′14″W / 32.69694°N 116.98722°W / 32.69694; -116.98722Coordinates: 32°41′49″N 116°59′14″W / 32.69694°N 116.98722°W / 32.69694; -116.98722[2]
Type Reservoir
Primary inflows Sweetwater River
Primary outflows Sweetwater River[1]
Catchment area 182 square miles (470 km2)[1]
Basin countries United States
Built April 7, 1888 (1888-04-07)
Max. length 2 miles (3.2 km)
Max. width 0.75 miles (1.21 km)
Surface area 936 acres (379 ha)[1]
Max. depth 108 feet (33 m)
Water volume 27,689 acre feet (34,154,000 m3)[1]
Frozen Never
Islands none
Settlements La Presa
Sweetwater Reservoir as seen from San Miguel Mountain in 2006

Sweetwater Reservoir is a 960-acre (390 ha) artificial lake in San Diego County, California, formed by the Sweetwater Dam on the Sweetwater River. Construction of the dam was completed in 1888.


The area surrounding the reservoir is home to several species, including least Bell's vireo and the California gnatcatcher. It lies near the census-designated places of La Presa and Spring Valley. The drainage basin it forms along with Loveland Reservoir covers 230 square miles (600 km2).

See also[edit]


  1. ^ a b c d e "Dams Within the Jurisdiction of the State of California" (PDF). California Department of Water Resources. Retrieved 2014-08-25. 
  2. ^ "Sweetwater Reservoir". Geographic Names Information System. United States Geological Survey. 1981-01-19. Retrieved 2011-01-20.