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FOLSOM DIKE 3

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March 23, 2025


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Folsom Dike 3 is a vital flood risk reduction structure located in Placer, California, along the American River. Built in 1956 by the Bureau of Reclamation, this earth dam stands at a height of 10 feet and has a hydraulic height of 5 feet, serving as a crucial barrier against potential flooding in the region. With a normal storage capacity of 1,010,000 acre-feet and a drainage area of 1,570 square miles, Folsom Dike 3 plays a key role in protecting nearby communities from high water levels.

Managed by the Bureau of Reclamation, Folsom Dike 3 serves multiple purposes beyond flood risk reduction, including hydroelectric power generation, irrigation, recreation, and water supply. The dam's associated structures, such as CA10148S001 and CA10148S002, contribute to its overall functionality and effectiveness in water resource management. Despite its high hazard potential, the condition assessment of Folsom Dike 3 is currently not available, highlighting the need for ongoing monitoring and maintenance to ensure its continued reliability in safeguarding the surrounding area from potential flooding events.

With a risk assessment rating of "High (2)", Folsom Dike 3 underscores the importance of proactive risk management measures to mitigate any potential threats to its structural integrity. While the dam does not have a spillway, its strategic location and design make it a critical component of the water infrastructure in the region. As a federal-owned structure, Folsom Dike 3 stands as a testament to the collaborative efforts of various agencies in safeguarding water resources and enhancing climate resilience in California.

Year_Completed 1956
Dam_Height 10
River_Or_Stream AMERICAN RIVER
Dam_Length 1395
Primary_Dam_Type Earth
Surface_Area 11180
Hydraulic_Height 5
Drainage_Area 1570
Nid_Storage 1120000
Structural_Height 10
Hazard_Potential High
Foundations Rock
Nid_Height 10
       

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