Clintonville Reservoir Report

Last Updated: December 6, 2025

Clintonville, located in Waupaca County, Wisconsin, is home to a gravity dam on the Pigeon River with a primary purpose of recreation.


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Summary

Built in 1855, this dam stands at a height of 20 feet and has a hydraulic height of 12 feet, serving as a flood risk reduction measure in addition to its recreational function. With a storage capacity of 1020 acre-feet and a normal storage of 688 acre-feet, the dam covers a surface area of 163 acres and drains an area of 120 acres.

Despite its age, the Clintonville dam has a low hazard potential and is currently in fair condition as of the last assessment in May 2020. Inspected every 10 years, the dam has a controlled spillway and a maximum discharge capacity of 4700 cubic feet per second. The risk assessment for the dam indicates a very high risk level of 1, highlighting the importance of ongoing monitoring and maintenance to ensure the safety of the surrounding community and water resources. Overall, Clintonville's dam on the Pigeon River serves as a vital piece of infrastructure for both flood control and recreational purposes in the area.

Years Modified

1913 - Other

Year Completed

1855

Dam Length

240

Dam Height

20

River Or Stream

PIGEON

Primary Dam Type

Gravity

Surface Area

163

Hydraulic Height

12

Drainage Area

120

Nid Storage

1020

Structural Height

20

Hazard Potential

Low

Nid Height

20
       
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.