Little Kaukauna Lock And Dam Reservoir Report

Last Updated: December 6, 2025

Located in De Pere, Wisconsin, the Little Kaukauna Lock and Dam on the Fox River serves multiple purposes, including flood risk reduction, navigation, recreation, and water supply.


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Summary

Completed in 1926, this concrete gravity dam stands at a hydraulic height of 7 feet and a structural height of 16 feet, with a length of 588 feet. It has a significant hazard potential and a very high risk assessment rating, primarily due to potential seepage failure, concrete dam instability, and gate mechanical failure.

To mitigate risks and ensure the continuous operation of the dam, the US Army Corps of Engineers (USACE) and other partners actively monitor and maintain the structure. USACE staff conduct frequent inspections, adjust gates, and collaborate with state agencies and the hydropower company to address any issues promptly. Emergency Action Plans are in place, and daily discharge updates are provided to the public. Proactive measures, such as walkway replacements and lock rehabilitation, have enhanced the reliability and long-term resilience of the dam, ensuring its functionality and safety for the surrounding community and water resource enthusiasts.

Year Completed

1926

Dam Length

588

River Or Stream

FOX

Primary Dam Type

Concrete

Surface Area

564

Length Of Locks

146

Hydraulic Height

7

Drainage Area

6230

Nid Storage

4270

Structural Height

16

Hazard Potential

Significant

Foundations

Soil

Nid Height

16
       
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.