Oberreuter Dam Reservoir Report
Last Updated: December 15, 2025
The Oberreuter Dam, located in Mapleton, Iowa, is a privately owned structure designed by the USDA NRCS and regulated by the Iowa DNR.
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Summary
Completed in 1973, this earth dam stands at a height of 28 feet and has a length of 430 feet, serving primarily for fire protection, stock, and small fish pond purposes. With a storage capacity of 40 acre-feet and a surface area of 3.1 acres, the dam is situated on the TR-Reynolds Creek and has a low hazard potential.
Managed by the Natural Resources Conservation Service, the Oberreuter Dam has a moderate risk rating and has not been assessed for its condition. While it has not been inspected in recent years, the dam is equipped with an uncontrolled spillway and is considered to meet regulatory guidelines. With a drainage area of 0.24 square miles, the dam plays a crucial role in water resource management in Woodbury County, Iowa, providing essential benefits for both the local community and the environment.
Despite its low hazard potential, the Oberreuter Dam plays a significant role in water resource management in the region, ensuring fire protection, stock watering, and small fish pond needs are met. With its construction overseen by the USDA NRCS and regulation by the Iowa DNR, this earth dam stands as a testament to sustainable water infrastructure development and management practices in Iowa.
Year Completed |
1973 |
Dam Length |
430 |
Dam Height |
28 |
River Or Stream |
TR-REYNOLDS CREEK |
Primary Dam Type |
Earth |
Surface Area |
3.1 |
Drainage Area |
0.24 |
Nid Storage |
40 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
28 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Little Sioux River At Correctionville
|
327cfs |
Maple River At Mapleton
|
323cfs |
West Fork Ditch At Hornick
|
80cfs |
Little Sioux River Near Turin
|
1040cfs |
Monona-Harrison Ditch Near Turin
|
158cfs |
Missouri River At Decatur
|
14800cfs |
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.
Oberreuter Dam