Soap Creek Watershed Site 4-48 Reservoir Report

Last Updated: December 6, 2025

Soap Creek Watershed Site 4-48 in Iowa, managed by the local government, serves as a vital structure for flood risk reduction and grade stabilization along the TR-South Soap Creek.


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Summary

Built in 2005 by the USDA NRCS, this earth dam stands at 29 feet high and spans 225 feet in length, with a storage capacity of 25 acre-feet. Despite its low hazard potential and moderate risk assessment, the dam has not been rated for condition assessment yet.

Located in Appanoose County, Iowa, this site plays a crucial role in managing water resources in the region, covering a drainage area of 0.11 square miles. With its uncontrolled spillway type and stone core construction, Soap Creek Watershed Site 4-48 represents a key component in the local water infrastructure system. While it has not undergone recent inspections or assessments, the dam continues to support the community's flood risk reduction efforts effectively.

As a part of the Rock Island District, Soap Creek Watershed Site 4-48 contributes to the overall water management efforts in the region, showcasing the collaborative efforts between local and federal agencies. With its strategic location and purposeful design, this structure stands as a testament to the importance of sustainable water resource management in mitigating climate-related risks and ensuring the resilience of communities in the face of changing environmental conditions.

Year Completed

2005

Dam Length

225

Dam Height

29

River Or Stream

TR- SOUTH SOAP CREEK

Primary Dam Type

Earth

Surface Area

1

Drainage Area

0.11

Nid Storage

25

Hazard Potential

Low

Foundations

Soil

Nid Height

29
       
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.