SNOFLO



MISSISSIPPI RIVER LOCK AND DAM 8

RESERVOIR LEVELS
Soil Dam Mississippi River
April 7, 2025


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Mississippi River Lock and Dam 8, also known as Pool 8, is a federal structure located in Victory, Wisconsin along the Mississippi River. Completed in 1937, this concrete dam serves primarily for navigation purposes, with a single lock and a spillway width of 2750 feet. The dam has a significant hazard potential and a very high risk assessment rating, but is considered low-risk by the US Army Corps of Engineers (USACE) due to continuous risk management measures and regular maintenance.

Lock and Dam 8 maintains a navigation pool for river traffic, with a maximum discharge of 274,000 cfs and a gated spillway regulated to hold a constant pool level for navigation purposes. Despite identified risks such as aging miter gates and potential navigation accidents, USACE actively works to reduce public safety risks associated with the dam. Additionally, the dam does not store flood waters but plays a crucial role in managing river flows and maintaining water levels for navigation, recreation, and safety in the area.

USACE emphasizes public awareness and coordination with state and county emergency managers to mitigate risks and ensure the proper functioning of Lock and Dam 8. With ongoing monitoring, maintenance, and risk management efforts, the dam continues to play a vital role in water resource management and climate resilience along the Mississippi River, exemplifying USACE's commitment to safeguarding communities and infrastructure in the face of potential hazards.

Year_Completed 1937
Dam_Height 30
River_Or_Stream MISSISSIPPI RIVER
Dam_Length 18520
Primary_Dam_Type Concrete
Surface_Area 20800
Length_Of_Locks 600
Hydraulic_Height 38
Drainage_Area 64770
Nid_Storage 260000
Structural_Height 42
Outlet_Gates Roller - 5, Tainter (radial) - 10, Uncontrolled - 0
Hazard_Potential Significant
Foundations Soil
Nid_Height 42
       

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