Soap Creek Watershed Site 4-57a Reservoir Report

Last Updated: December 6, 2025

Soap Creek Watershed Site 4-57a, located in Appanoose County, Iowa, is a vital water resource managed by the local government for purposes such as fire protection, stock, and small fish pond maintenance.


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Summary

This earth dam, completed in 1992 by USDA NRCS, serves as a key component in flood risk reduction efforts in the region. With a dam height of 40 feet and a storage capacity of 275 acre-feet, this structure plays a crucial role in water management in the area.

Managed by the Iowa Department of Natural Resources, Soap Creek Watershed Site 4-57a is regulated, permitted, inspected, and enforced to ensure its proper functioning and safety. Despite being classified as having low hazard potential, the risk assessment for this site indicates a moderate level of risk. With a drainage area of 0.88 square miles and a surface area of 8.8 acres, this site plays a significant role in the overall water management strategy for the region, highlighting the importance of sustainable water resource management practices.

Overall, Soap Creek Watershed Site 4-57a is a noteworthy example of responsible water resource management in Iowa. With its strategic location along the TR-SOAP CREEK river/stream and its contribution to flood risk reduction efforts, this site showcases the collaboration between local government, federal agencies, and conservation services to safeguard water resources and promote environmental sustainability in the region.

Year Completed

1992

Dam Length

667

Dam Height

40

River Or Stream

TR-SOAP CREEK

Primary Dam Type

Earth

Surface Area

8.8

Drainage Area

0.88

Nid Storage

275

Hazard Potential

Low

Foundations

Soil

Nid Height

40
       
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.