RESERVOIR LEVELS
December 21, 2024
450 ft 37.21, -119.97


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Buchanan Dam, also known as H.V. Eastman Lake, is a rockfill dam located in Chowchilla, California, along the Chowchilla River. Completed in 1975 by the US Army Corps of Engineers, the primary purpose of the dam is flood risk reduction, with additional benefits including hydroelectric power generation, irrigation, and recreation. Standing at a structural height of 218 feet and with a storage capacity of 185,256 acre-feet, Buchanan Dam plays a crucial role in managing water levels and mitigating flood risks in the region.

With a hazard potential rated as high, the dam is regularly inspected and maintained by the US Army Corps of Engineers to ensure its structural integrity and safety. Risk management measures include continual monitoring, prioritizing activities to address risks, and engaging with local emergency managers and the public to raise awareness and readiness for potential dam-related emergencies. The dam's emergency action plan is regularly updated, and maintenance and repairs are conducted as needed to keep the dam functioning properly. Despite the risks associated with severe weather events and potential dam releases, Buchanan Dam plays a vital role in managing water resources and protecting downstream communities from flooding.

Storage 24hr Change -1.09%
Percent of Normal 236%
Minimum 9,063 acre-ft
2022-11-29
Maximum 172,105 acre-ft
2024-07-08
Average 41,281 acre-ft
Dam_Height 179
Hydraulic_Height 192
Drainage_Area 235
Year_Completed 1975
Nid_Storage 150000
Structural_Height 218
Primary_Dam_Type Rockfill
Foundations Rock
Surface_Area 1780
Hazard_Potential High
River_Or_Stream CHOWCHILLA RIVER
Dam_Length 1746
Nid_Height 218
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