Stoeffer Dam Reservoir Report
Nearby: Green Dam Rolling Hills Dam #2
Last Updated: December 13, 2025
Stoeffer Dam, located in Mingo, Iowa, is a privately owned structure built in 1987 for fire protection, stock, and small fish pond purposes.
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Summary
The dam is classified as an earth type with a height of 27 feet and a length of 400 feet, providing a storage capacity of 17 acre-feet. Situated on TR-Indian Creek, the dam serves a drainage area of 0.09 square miles and covers a surface area of 1.3 acres.
Managed by the Iowa Department of Natural Resources, Stoeffer Dam is regulated, inspected, and enforced for safety compliance. Despite its low hazard potential, the dam is categorized as having a moderate risk level, with no specific risk management measures identified. While the condition of the dam is currently not rated, the structure is regularly monitored for any potential risks or hazards.
Stoeffer Dam is equipped with an uncontrolled spillway and has no outlet gates or associated structures. With its strategic location and modest storage capacity, the dam plays a crucial role in water resource management and ecosystem support in the Story County area. Climate and water resource enthusiasts will find Stoeffer Dam to be an intriguing example of private ownership and regulatory oversight in the realm of dam infrastructure.
Year Completed |
1987 |
Dam Length |
400 |
Dam Height |
27 |
River Or Stream |
TR- INDIAN CREEK |
Primary Dam Type |
Earth |
Surface Area |
1.3 |
Drainage Area |
0.09 |
Nid Storage |
17 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
27 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Indian Creek Near Mingo
|
79cfs |
South Skunk River Below Squaw Creek Near Ames
|
130cfs |
Fourmile Creek Near Ankeny
|
9cfs |
South Skunk River At Colfax
|
211cfs |
Squaw Creek At Ames
|
53cfs |
South Skunk River Near Ames
|
92cfs |
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.
Stoeffer Dam