Mueller - Mitchell Dam Reservoir Report
Nearby: Gibbs Dam Iowa Noname65
Last Updated: December 22, 2025
Located in Macksburg, Iowa, the Mueller - Mitchell Dam is a private dam primarily used for fire protection, stock, and small fish pond purposes.
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Summary
Constructed in 2008 by the NRCS, this earth dam stands at a height of 25 feet with a length of 572 feet, providing a storage capacity of 129 acre-feet. Situated on Tr- Ninemile Creek, the dam is regulated by the Iowa DNR and is equipped with an uncontrolled spillway with a width of 1 foot.
With a low hazard potential and a moderate risk assessment rating, the Mueller - Mitchell Dam is a vital water resource in Adair County, Iowa. While the dam's condition is currently not rated, it undergoes regular state inspections, enforcement, and permitting to ensure its structural integrity and safety. Its strategic location and purpose make it essential for maintaining water supply and supporting local wildlife in the area.
Dam Height |
25 |
Drainage Area |
0.3 |
Year Completed |
2008 |
Nid Storage |
129 |
Foundations |
Soil |
Surface Area |
11 |
River Or Stream |
Tr- Ninemile Creek |
Dam Length |
572 |
Hazard Potential |
Low |
Primary Dam Type |
Earth |
Nid Height |
25 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
South Raccoon River At Redfield
|
268cfs |
Middle Raccoon River At Panora
|
92cfs |
Raccoon River At Van Meter
|
1640cfs |
East Nishnabotna River Near Atlantic
|
143cfs |
Middle Raccoon River Near Bayard
|
121cfs |
Raccoon River Near West Des Moines
|
1300cfs |
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.
Mueller - Mitchell Dam