The O'Shaughnessy Dam and Hetch Hetchy valley reservoir in Yosemite National Park, California
California USA Date:1934 Duration:47 sec Sound:NO SOUND
The O'Shaughnessy dam across the Toulumne River,in the Hetch Hetchy valley, Yosemite National Park. It is named for the San Francisco City Engineer, M.M. O'Shaughnessy. Water flowing in the Hetch Hetchy aqueduct as seen from a boat. A view of the O'Shaughnessy dam from distant hillside. View of dam from above. Powerhouse. Electrical distribution system. Turbine deck in powerhouse. Controlled release of water from the dam. Water flowing through the powerhouse.
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