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In 2007, the San Francisco Public Utilities Commission, which manages the city's water, began investigating the possibility of "daylighting" underground portions of the creek. [1] Because the city's Yosemite Basin watershed becomes overburdened during heavy rainfall, daylighting could significantly reduce strain on stormwater infrastructure. [2]
Its purpose was to provide water and hydroelectric power to San Francisco. Muir and the Sierra Club opposed the project, while others, including Gifford Pinchot, supported it. [69] In 1913, the O'Shaughnessy Dam was approved via passage of the Raker Act. [70] In 1918, Clare Marie Hodges was hired as the first female Park Ranger in Yosemite. [71]
Yosemite Valley is on the western slope of the Sierra Nevada mountains, 150 miles (240 km) east of San Francisco.It stretches for 7.5 miles (12.1 km) in a roughly east–west direction, with an average width of about 1 mile (1.6 km).
The Hetch Hetchy Valley began as a V-shaped river canyon cut out by the ancestral Tuolumne River. About one million years ago, the extensive Sherwin glaciation widened, deepened and straightened river valleys along the western slope of the Sierra Nevada, including Hetch Hetchy, Yosemite Valley, and Kings Canyon farther to the south. [12]
Yosemite photo weekend As part of Wiki Loves Monuments , I'm organizing a photo weekend in Yosemite National Park . The Yosemite Valley itself is listed on the National Register of Historic Places, as are a number of individual sites, like the Ahwahnee Hotel , Camp 4 , and the Camp Curry Historic District , to name a few.
Half Dome is a quartz monzonite batholith at the eastern end of Yosemite Valley in Yosemite National Park, California. It is a well-known rock formation in the park, named for its distinct shape. One side is a sheer face while the other three sides are smooth and round, making it appear like a dome cut in half.
Yosemite Creek flooding its channel in Yosemite Valley (2005). The Yosemite Creek watershed, which feeds the creek and Yosemite Falls, contains 43 square miles (110 km 2). It is largely a granite basin that was scraped clean of soil by glaciers. Because of the shallow soil base, the Yosemite Creek watershed has little capacity to hold water, so ...
O'Shaughnessy Dam is a 430-foot-high (131 m) concrete arch-gravity dam in Tuolumne County, California, United States.It impounds the Tuolumne River, forming the Hetch Hetchy Reservoir at the lower end of Hetch Hetchy Valley in Yosemite National Park, about 160 miles (260 km) east of San Francisco. [6]