Redding Dam Reservoir Report

Last Updated: December 8, 2025

Redding Dam, located in Warren, Iowa, is a privately owned earth dam constructed in 1964 by the USDA SCS with a primary purpose of fire protection, stock, or small fish pond.


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Summary

This dam stands at 26 feet tall and spans 451 feet in length, with a storage capacity of 35 acre-feet. Situated on the TR-MIDDLE RIVER, Redding Dam serves as a vital water resource for the surrounding area, providing essential water for various purposes.

Managed by the Iowa DNR, Redding Dam is state-regulated and subject to regular inspections to ensure its structural integrity and safety. With a low hazard potential and a moderate risk assessment rating of 3, the dam poses minimal danger to the surrounding community. Despite being uncontrolled, the spillway of Redding Dam is designed to handle any excess water flow effectively, further mitigating potential risks associated with heavy rainfall or flooding events.

Redding Dam's location in Spring Hill, Iowa, makes it a key player in water resource management and climate resilience efforts in the region. As a primary source of water for fire protection and other essential needs, this dam plays a crucial role in sustaining the local ecosystem and supporting agricultural activities. With its solid construction and regular maintenance, Redding Dam stands as a reliable and secure water infrastructure essential for the community's well-being and safety.

Year Completed

1964

Dam Length

451

Dam Height

26

River Or Stream

TR-MIDDLE RIVER

Primary Dam Type

Earth

Surface Area

2.7

Drainage Area

0.2

Nid Storage

35

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.