Yosemite National Park

Yosemite National Park

O'Shaugnessy Dam

Latitude, Longitude: 37.947413, -119.788570

O'Shaugnessy Dam, at the west end of Hetch Hetchy Valley, provides a viewpoint of the Valley's waterfalls, rock formations, and reservoir. The Hetch Hetchy Road is open all year, though it may close for periods after snowstorms, and is open only during daylight hours (approximately).