Wishon Reservoir
The earthen and rockfill gravity dam was constructed in 1958Pacific 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. 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.
byCourtright 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.
The reservoir Wishon Dam creates, Wishon Reservoir, has a maximum capacity of 128,606 acre-feet. 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. The area north of the dam that is now covered by the reservoir was known as Coolidge Meadows prior to the construction of the dam.
See also
References
- ^ "California Data Exchange Center".
- ^ "Popular Mechanics". Hearst Magazines. March 1959.
- ^ "California Hydroelectric Statistics & Data". California Energy Commission. Archived from the original on 2018-02-26. Retrieved 2018-05-02.
- ^ Federal Register, Volume 60 Issue 112 (Monday, June 12, 1995)
- ^ "Archived copy" (PDF). Archived from the original (PDF) on 2006-10-05. Retrieved 2012-08-04.
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: CS1 maint: archived copy as title (link) - ^ Sierra National Forest - Recreation
- ^ "Blackcap Mtn., Quadrangle" (Map scan). USGS TopoView (15 Minute Quadrangle Map). U.S. Geological Survey. September 23, 1955. Retrieved January 28, 2022.