SNOFLO

       

ST. ANTHONY FALLS UPPER LOCK AND DAM

RESERVOIR LEVELS
March 17, 2025


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St. Anthony Falls Upper Lock and Dam, located in Minneapolis, Minnesota, is a captivating structure that plays a significant role in navigation and recreation along the Mississippi River. Completed in 1963, this federal-owned dam stands at a height of 93 feet and has a hydraulic height of 86 feet, serving as a vital component for managing water levels and ensuring structural integrity. With a spillway width of 1900 feet and a maximum discharge capacity of 91,000 cubic feet per second, the dam is equipped to handle varying water levels and provide flood risk management.

Managed by the US Army Corps of Engineers, St. Anthony Falls Upper Lock and Dam is a concrete structure with a multi-arch core type, designed to support navigation activities and maintain water storage capabilities. The dam's emergency action plan is regularly updated to address potential risks, with a focus on continuous monitoring, maintenance, and collaboration with local emergency managers. Despite its significant hazard potential, the dam serves as a crucial asset for water resource management and flood control measures in the region. Enthusiasts of water resources and climate will find St. Anthony Falls Upper Lock and Dam to be a fascinating example of engineering and environmental stewardship along the Mississippi River.

Year_Completed 1963
Dam_Height 83
River_Or_Stream MISSISSIPPI RIVER
Dam_Length 1900
Primary_Dam_Type Concrete
Surface_Area 35
Length_Of_Locks 400
Hydraulic_Height 86
Drainage_Area 19680
Nid_Storage 4900
Structural_Height 93
Outlet_Gates Tainter (radial) - 1, Uncontrolled - 0
Hazard_Potential Significant
Foundations Rock
Nid_Height 93

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