Kaukauna Locks And Dam Reservoir Report

Last Updated: December 6, 2025

The Kaukauna Locks and Dam, located on the Fox River in Wisconsin, was completed in 1931 with a primary purpose of flood risk reduction.


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Summary

This concrete structure, owned and operated by the US Army Corps of Engineers, also serves hydroelectric, navigation, recreation, and water supply purposes. With a significant hazard potential, the dam has a very high risk assessment rating due to potential failure of the concrete wall and tainter gates. However, recent risk management measures, including regular monitoring, inspections, and emergency action plans, have improved the structure's reliability and long-term resilience.

To address concerns with the dam, the USACE has replaced tainter gates and performed pier repairs, while the State rehabilitated the locks in 2007 to enhance in-season navigation. With a controlled spillway and five locks, the Kaukauna Locks and Dam plays a crucial role in managing water levels and ensuring the safety of nearby communities. Despite the identified risks, the coordinated efforts of the USACE, State, and hydropower company have helped mitigate potential hazards and maintain the functionality of this vital water resource infrastructure.

Year Completed

1931

Dam Length

603

River Or Stream

FOX

Primary Dam Type

Concrete

Surface Area

234

Length Of Locks

144

Hydraulic Height

13

Drainage Area

6120

Nid Storage

1300

Structural Height

22

Hazard Potential

Significant

Foundations

Rock

Nid Height

22
       
Seasonal Comparison

Weather Forecast

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.