SNOFLO

       




AMERICAN FALLS

RESERVOIR LEVELS
March 28, 2025


56°F

Today

37°F

Tonight

10mph

Windspeed

46%

Humidity

American Falls is a concrete gravity dam located on the Snake River in Idaho, completed in 1927 by the Bureau of Reclamation for flood risk reduction. Standing at a structural height of 104 feet and a dam height of 86.5 feet, it has a storage capacity of 1,671,300 acre-feet and covers a surface area of 58,076 acres. The dam plays a crucial role in fire protection, irrigation, stock, fish and wildlife pond management, and recreation in the region.

Managed by the Bureau of Reclamation, American Falls has a high hazard potential and a very high risk assessment rating. Despite its age, the dam has not had a recent condition assessment. It is regulated and inspected by the Bureau of Reclamation, with emergency action plans in place. The dam's controlled spillway helps manage water flow, with a maximum discharge capacity of 87,000 cubic feet per second. The surrounding area offers opportunities for outdoor activities and supports diverse ecosystems along the Snake River.

Overall, American Falls Dam serves as a vital infrastructure for water resource management and climate resilience in Idaho. With its historical significance, engineering design, and multi-purpose functions, the dam continues to play a key role in ensuring water security, flood protection, and recreational opportunities for the local community and wildlife habitat along the Snake River.

Year_Completed 1927
Dam_Height 86.5
River_Or_Stream SNAKE RIVER
Dam_Length 5277
Primary_Dam_Type Concrete
Surface_Area 58076
Hydraulic_Height 78
Drainage_Area 13580
Nid_Storage 1671300
Structural_Height 104
Hazard_Potential High
Foundations Unlisted/Unknown
Nid_Height 104
       

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