Iowa Noname73 Reservoir Report

Last Updated: December 10, 2025

Iowa Noname73, located in Churchville, Iowa, is a privately owned earth dam constructed in 1975 by the USDA NRCS for multiple purposes including fire protection, stock, small fish pond, recreation, and water supply.


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Summary

The dam measures 18 feet in height and 540 feet in length, with a storage capacity of 96 acre-feet and a surface area of 6.7 acres. Situated on TR-North River in Madison County, Iowa, this dam is regulated by the Iowa Department of Natural Resources and is inspected, permitted, and enforced by state authorities.

Despite its low hazard potential and moderate risk assessment, the condition of Iowa Noname73 is currently rated as "Not Rated" due to the absence of recent inspection data. The dam has an uncontrolled spillway type with no outlet gates, and its primary purpose is to provide essential services while serving as a recreational amenity for the local community. With a drainage area of 0.31 square miles, this dam plays a crucial role in managing water resources in the region and demonstrates the collaborative effort between private owners and state agencies in ensuring the safety and functionality of water infrastructure in Iowa.

Year Completed

1975

Dam Length

540

Dam Height

18

River Or Stream

TR-NORTH RIVER

Primary Dam Type

Earth

Surface Area

6.7

Drainage Area

0.31

Nid Storage

96

Hazard Potential

Low

Foundations

Soil

Nid Height

18
       
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.