Clermont Milldam Reservoir Report

Last Updated: December 5, 2025

Located in Clermont, Iowa, the Clermont Milldam is a gravity dam constructed in 1925 for recreational purposes along the Turkey River.


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Summary

With a height of 16 feet and a length of 248 feet, the dam provides a storage capacity of 578 acre-feet and covers a surface area of 70 acres. While the dam is primarily used for recreation, it is also regulated by the Iowa Department of Natural Resources, ensuring its safety and compliance with state regulations.

The dam's low hazard potential and moderate risk assessment make it a key feature in the region for both water resource management and climate enthusiasts. While the condition assessment is currently marked as "Not Rated," the dam's design and construction using soil foundations reflect its sturdy build and functionality. The Clermont Milldam serves as a vital component in the local water management system, showcasing the integration of natural resources with recreational activities along the Turkey River.

With its picturesque location and historical significance, the Clermont Milldam stands as a testament to Iowa's dedication to water resource management and conservation. As a popular spot for outdoor enthusiasts and nature lovers, the dam's presence along the Turkey River adds to the beauty and charm of the Fayette County landscape. Its regulated status and regular inspections highlight the commitment to maintaining the dam's integrity and ensuring the safety of all who visit this iconic water resource site.

Year Completed

1925

Dam Length

248

Dam Height

16

River Or Stream

TURKEY RIVER

Primary Dam Type

Gravity

Surface Area

70

Drainage Area

745

Nid Storage

578

Hazard Potential

Low

Foundations

Soil

Nid Height

16
       
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.