Lake Eleanor - Kayaking Trails

Lake Eleanor - Kayaking Trails


for the Lake Eleanor in Ventura County, California, see Banning Dam Lake Eleanor is a reservoir located in the northwestern backcountry of Yosemite National Park at an altitude of 4,657 feet (1,419 m). The reservoir has a capacity of 26,100 acre feet (32,200,000 m3) and a surface area of 953 acres (3.9 km²). The lake was formed in 1918 by damming Eleanor Creek as part of the Hetch Hetchy Reservoir system, constructed to supply water and power to the city of San Francisco. The original smaller, natural lake was also named "Eleanor" after the daughter of Josiah Whitney, leader of the California Geological Survey in the 1860s. Lake Eleanor Dam (National ID # CA00121) stands as a concrete multiple arch dam with a height of 68 feet (21 m) and a length of 1,260 feet (380 m). This first stage of the Hetch Hetchy project was built for year-round hydroelectric power generation, which was then sold to help finance construction of the larger O'Shaughnessy Dam, completed in 1923. That dams were planned for a valley in Yosemite National Park caused significant opposition. One of the most potent opponents was the Sierra Club and its founding President, John Muir. After two vetoes by Teddy Roosevelt, on December 19, 1913, Woodrow Wilson signed the Raker Act permitting construction. It began in 1914. The remote location dictated the use of an unusual multiple-arch structure here. It dramatically minimized the amount of concrete used in comparison with a gravity dam. Even more unusual, the concrete arches were elliptical rather than circular, the only multiple-arch dam ever built this way. Chief designer for the San Francisco Board of Public Works Michael O'Shaughnessy, along with hydraulic structural engineer R.P. McIntosh, were primarily responsible for the design. Still owned and operated by the city, the lake now provides opportunities for angling, hiking, and camping.

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Est. time
2 hours 45 minutes
Distance
2.5 km
Main destination
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