Sievers Dam Reservoir Report
Nearby: Lincoln Dam Clubine Dam
Last Updated: December 17, 2025
Sievers Dam, located in Monona, Iowa along the TR-Soldier River, was completed in 1965 and serves multiple purposes including fire protection, stock maintenance, and serving as a small fish pond.
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Summary
Owned by a private entity and regulated by the Iowa Department of Natural Resources, this earth dam stands at a height of 37 feet and spans 486 feet in length, with a storage capacity of 75 acre-feet and a surface area of 3.7 acres. Despite its low hazard potential and moderate risk assessment rating, the dam's condition remains unrated and inspection details are not available.
Managed by the Natural Resources Conservation Service, Sievers Dam's spillway type is uncontrolled, with no outlet gates or associated structures. The dam's risk management measures and emergency action plan status are also unspecified, highlighting potential areas for improvement in terms of safety standards and preparedness. With its location in a rural setting and relatively small drainage area of 0.43 square miles, continued monitoring and maintenance of Sievers Dam are essential to ensure its effectiveness in water resource management and climate resilience efforts for the surrounding community of Ute and beyond.
Year Completed |
1965 |
Dam Length |
486 |
Dam Height |
37 |
River Or Stream |
TR-SOLDIER RIVER |
Primary Dam Type |
Earth |
Surface Area |
3.7 |
Drainage Area |
0.43 |
Nid Storage |
75 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
37 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Maple River At Mapleton
|
323cfs |
Little Sioux River Near Turin
|
1040cfs |
Monona-Harrison Ditch Near Turin
|
158cfs |
West Fork Ditch At Hornick
|
80cfs |
Soldier River At Pisgah
|
112cfs |
Little Sioux River At Correctionville
|
327cfs |
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.
Sievers Dam