BIG SANDY RESERVOIR

RESERVOIR LEVELS
February 6, 2025
6,718 ft 42.25, -109.43


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Big Sandy, located in Sweetwater, Wyoming, is a Federal-owned dam on Big Sandy Creek with a primary purpose of flood risk reduction. Constructed in 1951, this Earth-type dam stands at a height of 85 feet and has a storage capacity of 54,400 acre-feet. The dam spans 2,350 feet in length and has a spillway width of 170 feet, designed to handle a maximum discharge of 7,350 cubic feet per second.

Managed by the Bureau of Reclamation, Big Sandy plays a critical role in mitigating flood risks in the region and providing irrigation water for agricultural purposes. The dam is state-regulated and inspected regularly to ensure its structural integrity and operational efficiency. With a hazard potential rated as high and a moderate risk assessment score, efforts are in place to manage potential risks and ensure the safety of surrounding communities.

For water resource and climate enthusiasts, Big Sandy serves as a vital infrastructure for water management in the area, showcasing the intersection of engineering, environmental stewardship, and public safety. As a key component of the Bureau of Reclamation's operations, the dam exemplifies the importance of proactive risk management and regulatory oversight in safeguarding water resources and enhancing resilience to climate-related challenges. With its strategic location and significant storage capacity, Big Sandy stands as a testament to the ongoing efforts to balance water needs, flood protection, and ecological sustainability in the region.

Storage 24hr Change 0.07%
Percent of Normal 150%
Minimum 81 acre-ft
2021-08-18
Maximum 51,962.71 acre-ft
2024-06-10
Average 16,201 acre-ft
Nid_Height 85
Hydraulic_Height 69
Drainage_Area 439
Year_Completed 1951
Dam_Height 85
Structural_Height 85
Primary_Dam_Type Earth
Foundations Rock, Soil
Surface_Area 2510
Hazard_Potential High
Outlet_Gates Valve - 2
Nid_Storage 54400
River_Or_Stream BIG SANDY CREEK
Dam_Length 2350
Reservoir Levels
       

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