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
Sunset Reservoir
Location	San Francisco, California
Coordinates	37°44′59″N 122°29′00″W
Type	Reservoir
Primary inflows	Municipal Water System
Primary outflows	Municipal Water System
Basin countries	United States
Max. length	330 m (1,080 ft)
Max. width	155 m (509 ft)
Surface area	11 acres (4.5 ha)
Max. depth	10 m (33 ft)
Water volume	270 acre⋅ft (330,000 m3)
Surface elevation	116 m (381 ft)
References	U.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 then Mayor Gavin Newsom.^[4]

Generation (MW·h) of Sunset Reservoir North Basin ^[5]

Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	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
2015	323	407	596	669	673	693	717	726	599	505	467	385	6,759
2016	266	444	490	571	710	681	795	784	691	583	501	365	6,879
2017	267	298	556	586	737	799	728	673	628	579	356	339	6,545
2018	320	451	516	645	777	837	724	729	690	544	374	297	6,905
2019	302	353	536	624	649	785	775	759	620	570	365	235	6,572
2020	337	456	447	563	737	734	829	686	539	498	394	312	6,531
2021	314	412	531	665	725	704	674	663	572	476	379	259	6,375
2022	330	393	521	588	689	718	692	643	542	500	370	259	6,246
Total													76,837

See also

• California portal
• Renewable energy portal

• 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}}: 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.

External links

• U.S. Geological Survey Geographic Names Information System: Sunset Reservoir
• San Francisco Public utilities Commission official website
• Cities of the UnderWorld - San Francisco on YouTube (begins at 00:05:33)