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STONY GORGE

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March 23, 2025


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Stony Gorge, located in Glenn County, California, is a Federal-owned structure managed by the Bureau of Reclamation. Completed in 1928, this buttress dam serves as a vital water supply source for the region, with a storage capacity of 58,500 acre-feet and a normal storage level of 50,380 acre-feet. The dam stands at 151 feet in height and has a structural height of 151 feet, providing essential water resources for the surrounding area.

With a hazard potential categorized as high, Stony Gorge underwent modifications in 1985 for hydraulic and structural improvements, as well as seismic upgrades in 2009. The dam has a risk assessment rating of moderate (3), indicating the importance of ongoing risk management measures. Despite its age, the condition assessment of Stony Gorge is currently listed as not available, emphasizing the need for regular inspections and maintenance to ensure its continued function and safety.

In the event of an emergency, the Emergency Action Plan (EAP) for Stony Gorge was last revised in 2016, with an annual inspection frequency to monitor its safety. With its critical role in water supply and risk management, Stony Gorge stands as a key infrastructure for water resource and climate enthusiasts to monitor and support for the sustainable management of California's water systems.

Years_Modified 1985 - Hydraulic, 1985 - Structural, 2009 - Seismic
Year_Completed 1928
Dam_Height 119
River_Or_Stream STONY CREEK
Dam_Length 868
Primary_Dam_Type Buttress
Surface_Area 1280
Hydraulic_Height 131
Drainage_Area 197
Nid_Storage 58500
Structural_Height 151
Hazard_Potential High
Nid_Height 151
       

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