Soap Creek Watershed Site 68-58a Reservoir Report
Last Updated: December 6, 2025
Soap Creek Watershed Site 68-58a, located in Monroe County, Iowa, is a flood risk reduction structure designed by the USDA NRCS and completed in 2006.
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Summary
This earth dam, standing at 29 feet high and stretching 335 feet in length, serves the primary purpose of mitigating flood risks in the area. With a storage capacity of 22 acre-feet and a drainage area of 0.1 square miles, the dam plays a crucial role in managing water flow and protecting downstream areas from potential flooding events.
Situated along a tributary to Kinser Creek, this dam has a low hazard potential and is currently rated as "Not Rated" in terms of condition assessment. Despite lacking in-depth inspection data, the structure is deemed to have moderate risk (level 3) and is equipped with an uncontrolled spillway measuring 12 feet in width. The dam's surface area covers just 1 acre, but its normalized storage capacity of 7 acre-feet and maximum discharge rate of 96 cubic feet per second demonstrate its ability to handle significant water volumes during heavy rainfall events.
Soap Creek Watershed Site 68-58a in Selma, Iowa, is a vital component of the region's water resource management infrastructure. Although it is not under state jurisdiction, the dam is subject to state permitting, inspection, and enforcement measures to ensure its operational integrity. With continuous monitoring and potential risk management measures in place, this dam plays a crucial role in safeguarding the local community from the impacts of flooding and preserving the ecological balance of the surrounding environment.
Year Completed |
2006 |
Dam Length |
335 |
Dam Height |
29 |
River Or Stream |
Trib to Kinser Creek |
Primary Dam Type |
Earth |
Surface Area |
1 |
Drainage Area |
0.1 |
Nid Storage |
22 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
29 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Dam Data Reference
Condition Assessment
SatisfactoryNo 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
HighDams 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.
Soap Creek Watershed Site 68-58a
Rathbun Lake Near Rathbun
200th Avenue Appanoose County