Lower Otay Lake with aircraft from TOPGUN
|Region||San Diego County|
|- left||Jamul Creek|
|Source||Outlet of Lower Otay Reservoir|
|- location||Otay County Open Space Preserve|
|- elevation||392 ft (119 m)|
|Mouth||San Diego Bay|
|- location||Imperial Beach|
|- elevation||0 ft (0 m)|
|Length||25 mi (40 km)|
|Basin||145 sq mi (376 km2)|
The Otay River is a river in southern San Diego County, California. The 25 mi (40 km) river begins at San Miguel Mountain, flows through the Upper- and Lower- Otay Reservoirs, and continues on between the southern part of the Chula Vista and the Otay Mesa West district of San Diego, and empties into San Diego Bay. Savage Dam, completed in 1919, forms the 49,510 acre·ft (61,070,000 m3) Lower Otay Reservoir, which is used to supply drinking water to parts of southern San Diego County. The reservoir is also the terminus for Pipeline 3 of the Second San Diego Aqueduct, which delivers water from the Colorado River via the Colorado River Aqueduct.
The Upper Otay Reservoir is formed by Upper Otay Dam, built in 1901. The reservoir was established as a hatchery for the introduction of Florida-strain largemouth bass in 1959. The reservoir was chemically treated first, which killed all of the native fish. In 1996, the reservoir was opened to fishing, but all fish caught must be released. Since the river is used as a municipal water supply, there is no human contact allowed at either reservoir. Early testing of manned gliders by noted aviator John J. Montgomery occurred in the region in the late 19th century.
- "Otay Watershed". Project Clean Water. Retrieved 2009-03-22.
- Cohen, Saul Bernard (2000). "Osseo to Palmhurst: Otay River". Columbia Gazetteer of North America. New York: Columbia University Press. ISBN 0-231-11990-9.
- Otay River Watershed Management Plan. San Diego County, Accessed 2011-01-28
- Harwood, Craig S. and Fogel, Gary B. Quest for Flight: John J. Montgomery and the Dawn of Aviation in the West, University of Oklahoma Press, 2012.