Lyons Dam, Arch dam in Tuolumne County, California.
The concrete structure spans 535 feet across the South Fork Stanislaus River, reaching a height of 132 feet within Stanislaus National Forest.
Pacific Gas and Electric Company constructed the dam in 1930 to establish a water supply system for the growing communities in the Twain Harte region.
The reservoir serves as a gathering place for local fishing enthusiasts who frequent the 184-acre water surface throughout different seasons.
The dam maintains a water capacity of 6,400 acre-feet, providing essential municipal water resources to residential areas in Tuolumne County.
In 2012, the surrounding Rushing Meadows area of 625 acres transferred from Pacific Gas and Electric to National Forest Service management.
Location: Tuolumne County
GPS coordinates: 38.09430,-120.16700
Latest update: March 17, 2025 17:14
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