Virtual Guidebook to Yosemite
O'Shaughnessy Dam, Hetch Hetchy Valley
Yosemite National Park, California

High river flow at O'Shaugnessy Dam, Hetch Hetchy Reservoir.

O'Shaugnessy Dam on the Tulomne River, floods Hetch Hetchy Valley.
The lodge at Hetch Hetchy is used by city of San Francisco employees.

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