Soap Creek Watershed Site 68-62 Reservoir Report

Last Updated: December 7, 2025

Soap Creek Watershed Site 68-62, located in Monroe County, Iowa, is a key flood risk reduction infrastructure project designed by the USDA NRCS in 2005.


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Summary

This earth dam stands at a height of 23 feet and spans 534 feet in length, with a storage capacity of 59 acre-feet. The primary purpose of this structure is flood risk reduction, specifically for the TR- North Soap Creek.

Managed by the Iowa DNR, this site is regulated, permitted, inspected, and enforced by state agencies to ensure its functionality and safety. Despite its low hazard potential and moderate risk assessment, the condition of the dam is currently not rated. With a drainage area of 0.23 square miles and a surface area of 3.1 acres, Soap Creek Watershed Site 68-62 plays a crucial role in mitigating flood risks and stabilizing grades in the region.

This site, situated in the city of Selma, Iowa, demonstrates the collaborative efforts between local government and federal agencies in safeguarding communities against the impacts of extreme weather events. As a vital component of the water resource management system in the area, Soap Creek Watershed Site 68-62 serves as a testament to the importance of proactive infrastructure development in adapting to a changing climate and protecting vulnerable regions from potential flooding.

Year Completed

2005

Dam Length

534

Dam Height

23

River Or Stream

TR- NORTH SOAP CREEK

Primary Dam Type

Earth

Surface Area

3.1

Drainage Area

0.23

Nid Storage

59

Hazard Potential

Low

Foundations

Soil

Nid Height

23
       
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.