Wishon Dam | |
---|---|
Coordinates | 37°00′11″N118°58′00″W / 37.00306°N 118.96667°W |
Purpose | Hydroelectricity |
Opening date | 1958 |
Dam and spillways | |
Type of dam | Rockfill [1] |
Impounds | North Fork Kings River [1] |
Height (foundation) | 265 ft (81 m) [1] |
Length | 3,328 ft (1,014 m) [1] |
Elevation at crest | 6,554.7 ft (1,997.9 m) [1] |
Dam volume | 3,700,000 cu yd (2,800,000 m3) [1] |
Reservoir | |
Creates | Wishon Reservoir |
Total capacity | 118,000 acre⋅ft (146,000,000 m3) [1] |
Catchment area | 177 sq mi (460 km2) [1] |
Surface area | 970 acres (390 ha) [1] |
Haas Powerhouse [2] | |
Hydraulic head | 850 ft (260 m) [2] |
Installed capacity | 128 MW [2] |
Annual generation | 447,850,000 KWh (2001–2012) [3] |
Wishon Dam (National ID # CA00411) is a dam in Fresno County, California in the Sierra National Forest, in the Sierra Nevada Mountain Range. It impounds the North Fork Kings River to form Wishon Reservoir.
The earthen and rockfill gravity dam was constructed in 1958 by Pacific Gas and Electric Company (PG&E) with a height of 260 feet (79 m) and a length of 3,330 feet (1,010 m) at its crest. [4] Wishon Dam and its companion Courtright Dam, which stands about five miles to the north, along with other smaller auxiliary gravity dam structures, are elements of PG&E's Haas-Kings River Project.
Courtright Reservoir serves as the upper reservoir for the Helms Pumped Storage Plant. Wishon Reservoir is the lower. During times of peak demand for electricity, which is also when it is most expensive, water is drained from Courtright Reservoir, run through the 1,212 MW Helms Power Plant and emptied into Wishon Reservoir. When demand and prices for electricity are low, water is pumped from Wishon Reservoir to Courtright Reservoir using the power plant's reversible turbines. Helms Power Plant is 1,000 feet (300 m) underground in a chamber carved out of solid granite at the north end of Wishon Lake. It is similar to Southern California Edison's Eastwood Powerhouse near Shaver Lake, which is also a pumped-storage plant. [5]
The reservoir Wishon Dam creates, Wishon Reservoir, has a maximum capacity of 128,606 acre-feet. [4] PG&E maintains Lily Pad Campground with 15 campsites on the southern shore, and recreation includes fishing (for German brown, rainbow or Eastern Brook trout), boating, camping and hiking. [6] The area north of the dam that is now covered by the reservoir was known as Coolidge Meadows [7] prior to the construction of the dam.
The Kings River, is a 132.9-mile (213.9 km) river draining the Sierra Nevada mountain range in central California in the United States. Its headwaters originate along the Sierra Crest in and around Kings Canyon National Park and form the eponymous Kings Canyon, one of the deepest river gorges in North America. The river is impounded in Pine Flat Lake before flowing into the San Joaquin Valley southeast of Fresno. With its upper and middle course in Fresno County, the Kings River diverges into multiple branches in Kings County, with some water flowing south to the old Tulare Lake bed and the rest flowing north to the San Joaquin River. However, most of the water is consumed for irrigation well upstream of either point.
The Governor Edmund G. Brown California Aqueduct is a system of canals, tunnels, and pipelines that conveys water collected from the Sierra Nevada Mountains and valleys of Northern and Central California to Southern California. Named after California Governor Edmund Gerald "Pat" Brown Sr., the over 400-mile (640 km) aqueduct is the principal feature of the California State Water Project.
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Castaic Dam is an embankment dam in northwestern Los Angeles County, California, in the unincorporated area of Castaic. Although located on Castaic Creek, a major tributary of the Santa Clara River, Castaic Creek provides little of its water. The lake is the terminus of the West Branch of the California Aqueduct, part of the State Water Project. The dam was built by the California Department of Water Resources and construction was completed in 1973. The lake has a capacity of 325,000 acre-feet (401,000,000 m3) and stores drinking water for the western portion of the Greater Los Angeles Area.
The Colorado–Big Thompson Project is a federal water diversion project in Colorado designed to collect West Slope mountain water from the headwaters of the Colorado River and divert it to Colorado's Front Range and plains. In Colorado, approximately 80% of the state's precipitation falls on the West Slope, in the Rocky Mountains, while around 80% of the state's growing population lives along the eastern slope, between the cities of Fort Collins and Pueblo.
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The Oroville–Thermalito Complex is a group of reservoirs, structures, and facilities located in and around the city of Oroville in Butte County, California. The complex serves not only as a regional water conveyance and storage system, but is the headwaters for, and therefore perhaps is the most vital part of, the California Department of Water Resources' State Water Project, as one of the largest publicly built and operated water and power development and conveyance systems.
The Dinkey Lakes Wilderness is a federally designated wilderness area located 45 miles (72 km) northeast of Fresno, in the state of California, United States. It comprises 30,000 acres (12,141 ha) within the Sierra National Forest and was added to the National Wilderness Preservation System by the California Wilderness Act of 1984. Elevations range from 8,200 feet (2,500 m) to 10,619 feet (3,237 m). Recreational activities in the wilderness include day hiking, backpacking, horseback riding, fishing, rock climbing and cross-country skiing.
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The North Fork Kings River is a 40.3-mile (64.9 km) tributary of the Kings River, in the U.S. state of California. The river's main stem is entirely within Fresno County, and its watershed drains about 387 square miles (1,000 km2) of the southern Sierra Nevada mountain range.
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