Soap Creek Watershed Site 4-88 Reservoir Report
Last Updated: December 6, 2025
Soap Creek Watershed Site 4-88, located in Appanoose County, Iowa, is a crucial water resource managed by the local government for fire protection, stock, and small fish pond purposes.
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Summary
This earth dam, completed in 1992 by the USDA NRCS, stands at a height of 29 feet and spans a length of 336 feet, providing a storage capacity of 17 acre-feet. Despite its low hazard potential, the dam is regulated by the Iowa DNR and undergoes regular inspections, permitting, and enforcement to ensure its structural integrity and safety.
Situated along the TR- North Soap Creek, this dam serves as a flood risk reduction measure for the surrounding area, covering a drainage area of 0.07 square miles. While the spillway type is uncontrolled, the dam's condition is currently marked as "Not Rated," with a moderate risk assessment score of 3. With no associated structures and minimal modifications over the years, Soap Creek Watershed Site 4-88 remains a vital component of the local water infrastructure, contributing to the region's water management and conservation efforts. For water resource and climate enthusiasts, this site exemplifies the careful planning and maintenance required to safeguard water resources in the face of changing environmental conditions.
Year Completed |
1992 |
Dam Length |
336 |
Dam Height |
29 |
River Or Stream |
TR- NORTH SOAP CREEK |
Primary Dam Type |
Earth |
Surface Area |
1 |
Drainage Area |
0.07 |
Nid Storage |
17 |
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 4-88
Rathbun Lake Near Rathbun