Iowa Noname96 Reservoir Report

Last Updated: December 7, 2025

Iowa Noname96 is a local government-owned dam located in Wayne County, Iowa, specifically in the city of Rathbun Reservoir.


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Summary

Built in 1980 by the USDA SCS, this earth dam stands at 33 feet high and spans 458 feet in length. It serves multiple purposes including fire protection, stock, and a small fish pond, with a storage capacity of 149 acre-feet and a surface area of 5.5 acres.

Managed by the Iowa Department of Natural Resources (DNR), Iowa Noname96 is regulated, inspected, and enforced by the state agency. With a low hazard potential and a moderate risk assessment rating, the dam is currently in a condition where it has not been rated. While no emergency action plan (EAP) has been prepared for this structure, the risk management measures and guidelines are in place to ensure the safety and integrity of the dam.

Situated on the TR-Walker Branch river/stream and under the jurisdiction of the Rock Island District of the US Army Corps of Engineers, Iowa Noname96 plays a vital role in providing essential services to the local community. Water resource and climate enthusiasts will find this dam an interesting subject for study and analysis, showcasing the importance of effective dam management and maintenance in ensuring public safety and environmental protection.

Year Completed

1980

Dam Length

458

Dam Height

33

River Or Stream

TR-WALKER BRANCH

Primary Dam Type

Earth

Surface Area

5.5

Drainage Area

0.2

Nid Storage

149

Hazard Potential

Low

Foundations

Soil

Nid Height

33
       
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.