Bernstein Dam Reservoir Report
Last Updated: December 13, 2025
Bernstein Dam, located in Mahaska County, Iowa, is a privately owned structure designed by the USDA NRCS for the primary purpose of recreation.
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Summary
Completed in 1976, this earth dam stands at a height of 35 feet and spans 525 feet in length, creating a reservoir with a storage capacity of 94 acre-feet. The dam is situated on TR-Muchakinock Creek and is regulated by the Iowa Department of Natural Resources, with state permitting, inspection, and enforcement in place to ensure its safety and compliance with regulations.
The dam's hazard potential is deemed significant, with a moderate risk assessment rating of 3. While its condition assessment is currently not rated, the dam has not undergone any modifications since its completion. Despite the lack of specific emergency preparedness details, the dam's risk management measures and inundation maps are not readily available. With its scenic location and recreational offerings, Bernstein Dam serves as a vital water resource for the local community, providing not only fire protection and stock water but also opportunities for fishing and outdoor activities.
Water resource and climate enthusiasts interested in the impact of dams on local ecosystems and water management will find Bernstein Dam to be a fascinating case study. With its earth structure and uncontrolled spillway, the dam presents both opportunities for recreation and challenges for risk management. As a privately owned facility, Bernstein Dam highlights the importance of state regulation and inspection to ensure the safety and sustainability of water infrastructure in the face of changing climate conditions.
Year Completed |
1976 |
Dam Length |
525 |
Dam Height |
35 |
River Or Stream |
TR-MUCHAKINOCK CREEK |
Primary Dam Type |
Earth |
Surface Area |
6.4 |
Drainage Area |
0.28 |
Nid Storage |
94 |
Hazard Potential |
Significant |
Foundations |
Soil |
Nid Height |
35 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
South Skunk River Near Oskaloosa
|
485cfs |
Des Moines River Near Tracy
|
1400cfs |
Cedar Creek Near Bussey
|
11cfs |
Des Moines River Near Pella
|
2080cfs |
English Creek Near Knoxville
|
2cfs |
Des Moines River At Ottumwa
|
1090cfs |
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.
Area Campgrounds
| Location | Reservations | Toilets |
|---|---|---|
Eveland Access
|
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Quercus Wilderness Area
|
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Glendale Access
|
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Lake Keomah State Park Campground
|
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Lake Keomah State Park
|
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Cedar Creek Access
|
Bernstein Dam