Iowa Noname84 Reservoir Report

Last Updated: December 7, 2025

Iowa Noname84 is a dam located in Washington County, Iowa, specifically in the city of Coppock.


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Summary

Built in 1974 by the Washington County Engineer, this earth-type dam stands at a height of 39 feet and spans a length of 600 feet. With a primary purpose of providing fire protection and serving as a stock or small fish pond, Iowa Noname84 has a storage capacity of 88 acre-feet and covers a surface area of 5 acres.

Managed and regulated by the Iowa Department of Natural Resources, Iowa Noname84 is classified as a low hazard potential dam with a moderate risk assessment rating. While its condition assessment is currently not rated, the dam is subject to state inspection, permitting, and enforcement. Situated along the TR-Dutch Creek, this dam plays a crucial role in water resource management and protection within the region.

Enthusiasts of water resources and climate in Iowa will find Iowa Noname84 to be an intriguing infrastructure project that demonstrates the intersection of local government ownership, environmental regulation, and community safety. With its modest size and purposeful design, this dam serves as a valuable asset for fire protection and wildlife support while also highlighting the importance of responsible dam management in the face of changing climate conditions and water resource challenges.

Year Completed

1974

Dam Length

600

Dam Height

39

River Or Stream

TR-DUTCH CREEK

Primary Dam Type

Earth

Surface Area

5

Drainage Area

0.09

Nid Storage

88

Hazard Potential

Low

Foundations

Soil

Nid Height

39
       
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.