Hetch Hetchy Reservoir
Yosemite National Park, California
Hetch Hetchy Reservoir
When the O'Shaughnessy Dam was completed in the 1920s, Yosemite Valley's twin, Hetch Hetchy, was submerged under an eight-mile reservoir providing water and power to San Francisco. Despite this change, Hetch Hetchy still offers alluring scenery for those who venture into the park's northern reaches.
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