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Sunset Reservoir

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Coordinates: 37°44′59″N 122°29′00″W / 37.7496°N 122.4833°W / 37.7496; -122.4833
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Sunset Reservoir
LocationSan Francisco, California
Coordinates37°44′59″N 122°29′00″W / 37.7496°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)
Water volume270 acre⋅ft (330,000 m3)
ReferencesU.S. Geological Survey Geographic Names Information System: 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]

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 (MWh) [5]
Year Jan Feb Mar Apr May Jun Jul Aug Sept Oct Nov Dec Total
2010 620 278 238 89 1,224
2011 4 288 413 685 841 1,080 929 957 661 528 188 178 6,751
2012 20 202 496 718 987 1,067 922 727 681 535 274 200 6,828
2013 47 96 163 172 193 246 232 313 304 269 268 280 2,582
2014 242 276 485 574 660 732 677 733 715 645 536 366 6,640
Total 24,025

See also

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}}: 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. Retrieved 2009-09-29.
  4. ^ KGO ABC7 News, December 2010
  5. ^ "Sunset Reservoir North Basin, Monthly". Electricity Data Browser. Energy Information Administration. Retrieved March 19, 2016.
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