Lower Peak Lake Auxiliary is a private hydroelectric dam located in Placer County, California, near the town of Washington.
Wind
Humidity
Built in 1860, this earth dam stands at a height of 7 feet and has a hydraulic height of 3.5 feet. With a storage capacity of 484 acre-feet, the dam serves the primary purpose of hydroelectric power generation and is regulated by the Federal Energy Regulatory Commission.
Situated on the South Yuba River, Lower Peak Lake Auxiliary has a surface area of 33.3 acres and a maximum discharge of 312 cubic feet per second. The dam features an uncontrolled spillway with a width of 55 feet and has a low hazard potential. Although the condition assessment is not available, the risk assessment is moderate, with a risk level of 3. Emergency action plans have been prepared and last revised in December 2020, ensuring that the dam is well-prepared for any potential hazards.
Overall, Lower Peak Lake Auxiliary is a historic structure with a vital role in providing hydroelectric power to the region. Its location in the picturesque surroundings of Placer County makes it a significant landmark for water resource and climate enthusiasts interested in the sustainable development of water infrastructure in California.
Year Completed |
1860 |
Dam Length |
410 |
Dam Height |
7 |
River Or Stream |
South Yuba River - Tr |
Primary Dam Type |
Earth |
Surface Area |
33.3 |
Hydraulic Height |
3.5 |
Drainage Area |
1 |
Nid Storage |
484 |
Structural Height |
7 |
Hazard Potential |
Low |
Nid Height |
7 |
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Muninnvagl
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Cold Springs Campground
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Hampshire Rocks
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Hampshire Rocks Campground
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Loch Leven Lakes Dispersed Camping
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