Sunset Reservoir

Sunset Reservoir is one of three terminal reservoirs in the Regional Water System in San Francisco, California. The reservoir, the city's largest, is located in the Sunset District at 24th Avenue and Ortega Street, and is owned and maintained by the San Francisco Public Utilities Commission. Completed in 1960, the subterranean reservoir was constructed as an 11-acre (4.5 ha), 1,000 by 500 feet (300 m × 150 m), concrete basin, now containing 720 floor-to-ceiling columns. With its maximum depth of 33 ft (10 m), the reservoir's capacity is 270 acre⋅ft (330,000 m3) with average daily flows of 46 acre feet (57,000 m3) through 42-inch (1.1 m) inlet/outlet pipes.[1]

Sunset Reservoir
LocationSan Francisco, California
Coordinates37.7496°N 122.4833°W / 37.7496; -122.4833
TypeReservoir
Primary inflowsMunicipal Water System
Primary outflowsMunicipal Water System
Basin countriesUnited States
Max. length330 m (1,080 ft)
Max. width155 m (509 ft)
Surface area11 acres (4.5 ha)
Max. depth10 m (33 ft)
Water volume270 acre⋅ft (330,000 m3)
Surface elevation116 m (381 ft)
ReferencesU.S. Geological Survey Geographic Names Information System: Sunset Reservoir

Seismic upgrades
  • Seismic rehabilitation, which would include stabilization of the soil dam embankment (completed); a retrofit of the walls and roof using seismic joints, shear walls, diagonal bracing, and struts; and foundation improvements.
  • General rehabilitation, which would include repairing deteriorated concrete, replacing part of the reservoir lining material, replacing inlet piping, installing security fencing, upgrading the landscaping, and other miscellaneous site improvements.[2]

Solar project

The Sunset Reservoir Solar Project has installed 25,000 solar panels on the 480,000 sq ft (45,000 m2) roof of the reservoir. The 5-megawatt plant more than tripled the city's 2-megawatt solar generation capacity.[3] It opened in December 2010 in a ceremony introduced by Mayor Gavin Newsom.[4]

Generation (MW·h) of Sunset Reservoir North Basin [5]
YearJanFebMarAprMayJunJulAugSepOctNovDecTotal
2010 62027823889 1,224
2011 42884136858411,080929957661528188178 6,751
2012 202024967189871,067922727681535274200 6,828
2013 4796163172193246232313304269268280 2,582
2014 242276485574660732677733715645536366 6,640
2015 323407596669673693717726599505467385 6,759
Total30,784

See also
  • List of lakes in California
  • List of lakes in the San Francisco Bay Area

References
  1. H. Kenneth Hudnell (April 2009). "Mixing, De-Stratification, And Break-Point Chlorination In San Francisco's Sunset Reservoir" (.PDF). SolarBee, Inc: 2. Retrieved 2009-10-13. Cite journal requires |journal= (help)
  2. Public utilities Commission (2009). "Sunset Reservoir Upgrades - North Basin". City and County of San Francisco. Retrieved 2009-09-29.
  3. "Mayor Newsom Praises SFPUC For Approving New Five Megawatt Solar Project at Sunset Reservoir" (PDF) (Press release). SFPUC Communications and Public Outreach. 12 December 2008. Archived from the original (PDF) on March 6, 2016. Retrieved October 27, 2018.
  4. KGO ABC7 News, December 2010
  5. "Sunset Reservoir North Basin, Monthly". Electricity Data Browser. Energy Information Administration. Retrieved March 8, 2017.
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