Hetch Hetchy Reservoir
| Hetch Hetchy Reservoir | |
|---|---|
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| Hetch Hetchy Reservoir | |
| Location | Yosemite National Park Tuolumne County, California |
| Coordinates | 37°56′21″N 119°43′32″W / 37.9390878°N 119.7254523°WCoordinates: 37°56′21″N 119°43′32″W / 37.9390878°N 119.7254523°W [1] |
| Lake type | Reservoir |
| Primary inflows | Falls Creek Rancheria Creek Tiltill Creek Tuolumne River |
| Primary outflows | Tuolumne River |
| Catchment area | 1,180 km2 (460 sq mi) |
| Basin countries | United States |
| Water volume | 360,000 acre·ft (440,000,000 m3) |
| Surface elevation | 3,783 ft (1,153 m) |
| References | U.S. Geological Survey Geographic Names Information System: Hetch Hetchy Reservoir |
Hetch Hetchy Reservoir is a reservoir located within Yosemite National Park, about 65 miles (105 km) northeast from the city of Merced, California. The reservoir has a capacity of 360,000 acre·ft (440,000 ML) and is formed by the 364-foot (111 m) O'Shaughnessy Dam. The reservoir lies in the Hetch Hetchy Valley on the Tuolumne River. After a years-long battle to preserve the Valley, led by John Muir, the dam was approved under the administration of Woodrow Wilson in 1913. Construction was completed in 1923.
Hetch Hetchy is owned by the City and County of San Francisco and is operated and maintained by the San Francisco Public Utilities Commission. The reservoir's primary purpose is to supply drinking water and electric power to the San Francisco Bay Area. It is one of nine reservoirs in San Francisco's system and holds about 25% of its overall water storage capacity. The water is transported from the reservoir by the Hetch Hetchy Aqueduct. Hydroelectricity is produced by Kirkwood and Moccasin Powerhouses, which have capacities of 118 and 100 megawatts, respectively. Because Hetch Hetchy is a municipal water supply, and its water is not filtered, swimming and boating are prohibited. Fishing is permitted only from the lake shore.
See also [edit]
- List of dams and reservoirs in California
- List of lakes in California
- List of largest reservoirs of California
- San Francisco Public Utilities Commission
References [edit]
- "San Francisco Water Sources". San Francisco Public Utilities Commission. 2009. Archived from the original on 2011-06-29. Retrieved 2009-03-26.
- Sarah Null (December 2003). Thesis: Water Supply Implications of Removing O'Shaughnessy Dam (PDF). University of California, Davis. Retrieved 2009-03-26.
External links [edit]
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