Soap Creek Watershed Site 4-37 Reservoir Report

Last Updated: December 6, 2025

Soap Creek Watershed Site 4-37 in Floris, Iowa, is a Grade Stabilization earth dam completed in 1998 by USDA NRCS.


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Summary

This local government-owned structure on Tr- Soap Creek is designed to prevent erosion and manage water flow in the area. With a dam height of 29 feet and a length of 400 feet, it has a maximum storage capacity of 36 acre-feet and covers a drainage area of 0.13 square miles.

Although the dam has a low hazard potential and is currently rated as "Not Rated" in terms of condition assessment, it serves a critical role in managing water resources in the region. The structure's primary purpose is grade stabilization, and it also acts as an uncontrolled spillway with a width of 1 foot. Despite not being state regulated, Soap Creek Watershed Site 4-37 plays a vital role in mitigating flood risks and ensuring water security for the community.

While the risk assessment for this dam is moderate, with a rating of 3, there are currently no specific risk management measures in place. The structure has not been inspected recently, and there is no Emergency Action Plan (EAP) prepared or updated for potential emergencies. As climate change continues to impact water resources, the importance of maintaining and monitoring structures like Soap Creek Watershed Site 4-37 becomes increasingly significant for ensuring the safety and sustainability of the local environment.

Year Completed

1998

Dam Length

400

Dam Height

29

River Or Stream

Tr- Soap Creek

Primary Dam Type

Earth

Surface Area

1

Drainage Area

0.13

Nid Storage

36

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.