Iowa Noname62 Reservoir Report

Last Updated: December 15, 2025

Iowa Noname62 is a local government-owned dam located in Ringgold County, Iowa, specifically in the city of Diagonal.


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Summary

Built in 1976 by the USDA NRCS, this earth dam stands at a height of 26 feet and has a length of 900 feet. Its primary purpose is for fire protection, stock, or a small fish pond, with a storage capacity of 104 acre-feet.

Managed by the Iowa Department of Natural Resources, Iowa Noname62 is regulated, permitted, inspected, and enforced by state agencies to ensure its safety and functionality. The dam has a low hazard potential and a moderate risk assessment, with the last inspection dating back to October 1989. Despite its age, the condition of the dam is currently not rated, but it continues to serve its intended purposes effectively.

Situated on the TR-West Fork Grand River, Iowa Noname62 plays a crucial role in water resource management in the area. With its controlled spillway and state-regulated operations, this dam contributes to flood control, water supply, and environmental protection efforts in the region. For water resource and climate enthusiasts, Iowa Noname62 serves as a valuable infrastructure that highlights the importance of responsible dam ownership and maintenance in safeguarding our water resources for future generations.

Year Completed

1976

Dam Length

900

Dam Height

26

River Or Stream

TR-WEST FORK GRAND RIVER

Primary Dam Type

Earth

Surface Area

7

Drainage Area

0.66

Nid Storage

104

Hazard Potential

Low

Foundations

Soil

Nid Height

26
       
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.