PAYETTE LAKE AT MCCALL ID

RESERVOIR LEVELS
February 12, 2025


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Payette Lake, also known as Lardo Dam, is a private water resource located in McCall, Idaho. The lake is regulated by the Idaho Department of Water Resources and is considered to be a significant hazard potential with a fair condition assessment. It was completed in 1943 and has a storage capacity of 41,000 acre-feet, with a surface area of 5,337 acres and a drainage area of 144 square miles.

The dam, made of concrete with a multi-arch core, stands at a height of 13.3 feet and has a hydraulic height of 7.3 feet. It has a controlled spillway with a width of 124 feet, and there are no outlet gates associated with the structure. The risk assessment for the dam is considered very high (1), indicating the potential for significant consequences in the event of a failure. Regular inspections are conducted, with the last assessment taking place in September 2020.

For water resource and climate enthusiasts, Payette Lake offers a fascinating study in dam infrastructure and management. Its historical significance, unique design features, and potential risk factors make it a compelling subject for those interested in the intersection of water resources and environmental protection. The lake's location in the picturesque Valley County, surrounded by the natural beauty of Idaho, adds to its allure as a key site for understanding the complexities of water management in a changing climate.

Gage Height, Ft 24hr Change -0.83%
Percent of Normal 84%
Minimum 0.86 ft
2021-03-18
Maximum 7.72 ft
2010-06-05
Average 1 ft
Dam_Height 13.3
Hydraulic_Height 7.3
Drainage_Area 144
Year_Completed 1943
Nid_Storage 41000
Foundations Rock, Soil
Surface_Area 5337
Hazard_Potential Significant
Outlet_Gates None
River_Or_Stream NORTH FORK PAYETTE RIVER PAYETTE RIVER
Dam_Length 168
Nid_Height 13
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