Rager Dam Reservoir Report
Nearby: Kasparbauer Cohrs Dam
Last Updated: December 13, 2025
Rager Dam, located in Missouri Valley, Iowa, is a private dam designed by the USDA NRCS with a primary purpose of flood risk reduction.
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Summary
Completed in 2011, this earth dam stands at a height of 58 feet and spans 550 feet in length, with a maximum storage capacity of 102 acre-feet. The dam serves multiple purposes including fish and wildlife pond, grade stabilization, and recreation, while also regulating the flow of a tributary to Elk Creek.
Managed by the Iowa Department of Natural Resources, Rager Dam has a low hazard potential and has not been rated for its condition assessment. Despite its primary function of flood risk reduction, the dam also provides opportunities for recreational activities and supports wildlife habitats. With its strategic location and efficient design, Rager Dam plays a vital role in water resource management and climate resilience efforts in the region, contributing to the overall environmental sustainability and safety of the area.
Year Completed |
2011 |
Dam Length |
550 |
Dam Height |
58 |
River Or Stream |
Trib to Elk Creek |
Primary Dam Type |
Earth |
Surface Area |
2 |
Drainage Area |
0.46 |
Nid Storage |
102 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
58 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Soldier River At Pisgah
|
112cfs |
Boyer River At Logan
|
417cfs |
Little Sioux River Near Turin
|
1040cfs |
Monona-Harrison Ditch Near Turin
|
158cfs |
Maple River At Mapleton
|
323cfs |
Missouri River At Decatur
|
15500cfs |
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.
Rager Dam