Soap Creek Watershed Site 26-36 Reservoir Report

Last Updated: December 6, 2025

Located in the beautiful Soap Creek Watershed in Iowa, Site 26-36 is a local government-owned dam designed by the USDA NRCS for fire protection, stock, and small fish pond purposes.


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Summary

Completed in 1997, this earth dam stands at 26 feet high and spans 458 feet in length, with a storage capacity of 148 acre-feet and a surface area of 5.5 acres. The dam is regulated by the Iowa DNR and is used for flood risk reduction in the region.

With a low hazard potential and a moderate risk assessment rating of 3, Soap Creek Watershed Site 26-36 plays a crucial role in water resource management in the area. While the dam's condition assessment is currently not rated, it meets state permitting, inspection, and enforcement requirements. The dam features an uncontrolled spillway type and is situated along the TR-SOAP CREEK river/stream, offering essential protection to the surrounding community in Eldon and the wider Davis County.

Enthusiasts of water resources and climate will appreciate the significance of Soap Creek Watershed Site 26-36 as a key infrastructure for managing water supply, flood protection, and ecosystem health in the region. As a vital component of the local landscape, this dam serves multiple functions while maintaining a low hazard potential. Its strategic location and design by the USDA NRCS highlight the collaborative efforts to ensure water security and resilience in the face of changing climate conditions in Iowa's Soap Creek Watershed.

Year Completed

1997

Dam Length

458

Dam Height

26

River Or Stream

TR-SOAP CREEK

Primary Dam Type

Earth

Surface Area

5.5

Drainage Area

0.54

Nid Storage

148

Hazard Potential

Low

Foundations

Soil

Nid Height

26
       
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.