From the O'Shaughnessy Dam, the moment you cast your gaze across the cobalt-blue Hetch Hetchy and the towering canyon rims, domes and waterfalls, you will feel the power of place. On your right ...

But at a meeting Dec. 14, the Columbus City Council breathed new life into the utilities' generation program by approving $15.3 million in bond money to repair the plant at O'Shaughnessy Dam.

But one thing that even an optimist like me does not see happening any time soon is the draining of the lake behind the O’Shaughnessy Dam and the restoration to its original grandeur of Hetch ...

But the valley is still part of the park. Visitors can walk across the top of 100-year-old O’Shaughnessy Dam and hike along the edge of the reservoir via the 5-mile round-trip trail to Wapama Falls.

Yosemite’s Hetch Hetchy in May 2005. O’Shaughnessy Dam holds back Hetch Hetchy Reservoir in the foreground as Tueeulala Falls, upper left, and Wapama Falls, right, fill the reservoir.

Does it make sense to tear down O'Shaughnessy Dam today? Only if dozens of questions over water purity, water rights, drought years, electricity, politics and a monumental bill can be answered.

Heavy rains over the weekend flooded parts of the Scioto River, leading to rushing waters over the O'Shaughnessy Dam on Sunday, April 6, 2025. Doral Chenoweth Wolf's Ridge Brewing creates beer ...

But after one of the country’s first major environmental battles — a struggle that transformed Muir’s Sierra Club into a political force — the O’Shaughnessy Dam was completed in 1923.

Road crews began resurfacing the Glick Road Bridge over the O'Shaughnessy Dam, Monday. It's a process that is expected to take the next two weeks. While the reconstruction is taking place ...

O’Shaughnessy Dam at Hetch Hetchy Reservoir in Yosemite National Park, where much of San Francisco’s water is held. National Park Service State regulators have ordered the city of San ...