Menomonie Reservoir Report

Last Updated: December 13, 2025

Menomonie, a public utility located in Dunn, Wisconsin, is a gravity dam constructed in 1957 primarily for hydroelectric purposes.


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Summary

With a height of 37 feet and a length of 642 feet, this dam boasts a storage capacity of 15,000 acre-feet and a maximum discharge of 92,000 cubic feet per second. The dam, situated on the Red Cedar River, covers a surface area of 1405 acres and has a drainage area of 1795 square miles, making it a crucial piece of infrastructure for water resource management in the region.

Despite its impressive capabilities, Menomonie poses a high hazard potential, with a very high risk assessment rating by federal agencies. The dam is equipped with a controlled spillway and six Tainter radial outlet gates for efficient water flow management. Even though the condition assessment is currently not available, regular inspections and emergency action plans are in place to ensure the safety and reliability of this critical structure. As a key component of the Federal Energy Regulatory Commission's oversight, Menomonie serves as a vital resource for both hydroelectric power generation and recreational activities in the area.

Overall, Menomonie stands as a testament to the importance of water resource management and climate resilience in Wisconsin. With its strategic location, impressive specifications, and high-risk profile, this gravity dam plays a significant role in regulating water flow, facilitating recreation, and safeguarding the surrounding communities from potential hazards. As water resource and climate enthusiasts, the intricate details and functionality of Menomonie offer a fascinating insight into the intersection of infrastructure development, environmental stewardship, and public safety in the region.

Year Completed

1957

Dam Length

642

Dam Height

37

River Or Stream

Red Cedar

Primary Dam Type

Gravity

Surface Area

1405

Drainage Area

1795

Nid Storage

15000

Outlet Gates

Tainter (radial) - 6

Hazard Potential

High

Foundations

Soil

Nid Height

37
       
Seasonal Comparison

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Dam Data Reference

Condition Assessment

Satisfactory
No existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.
Fair
No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action. Note: Rare or extreme event is defined by the regulatory agency based on their minimum
Poor A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency. Investigations and studies are necessary.
Unsatisfactory
A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.
Not Rated
The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.
Not Available
Dams for which the condition assessment is restricted to approved government users.

Hazard Potential Classification

High
Dams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.
Significant
Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environment damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be in areas with population and significant infrastructure.
Low
Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner's property.
Undetermined
Dams for which a downstream hazard potential has not been designated or is not provided.
Not Available
Dams for which the downstream hazard potential is restricted to approved government users.