Soap Creek Watershed Site 68-63 Reservoir Report

Last Updated: December 7, 2025

Soap Creek Watershed Site 68-63, located in the picturesque city of Floris in Monroe County, Iowa, is a vital local government-owned flood risk reduction structure designed by the USDA NRCS in 1992.


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Summary

This earth dam stands at a height of 21 feet and spans 404 feet, providing crucial protection for the surrounding area against potential flooding events. With a storage capacity of 62 acre-feet, the dam serves multiple purposes including fire protection, stock watering, and small fish pond management in addition to flood risk reduction.

Managed by the Iowa Department of Natural Resources, Soap Creek Watershed Site 68-63 boasts a low hazard potential and a moderate risk assessment rating. Situated on the TR-SOAP CREEK, this structure plays a crucial role in safeguarding the local community and environment. With a drainage area of 0.24 square miles and a normal storage capacity of 15 acre-feet, this dam covers a surface area of 2.9 acres and is equipped with an uncontrolled spillway. Despite not having a current condition assessment rating, the dam's structural integrity and risk management measures ensure its continued effectiveness in protecting the area.

Overall, Soap Creek Watershed Site 68-63 stands as a testament to the collaborative efforts of local government agencies and the USDA NRCS in mitigating flood risks and ensuring the safety of residents in Monroe County, Iowa. With its strategic location, multiple purposes, and effective design, this dam serves as a valuable asset in water resource management and climate resilience efforts in the region.

Year Completed

1992

Dam Length

404

Dam Height

21

River Or Stream

TR-SOAP CREEK

Primary Dam Type

Earth

Surface Area

2.9

Drainage Area

0.24

Nid Storage

62

Hazard Potential

Low

Foundations

Soil

Nid Height

21
       
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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.