Rahmann Dam Reservoir Report
Nearby: Dallmann Dam Volk Dam
Last Updated: January 6, 2026
Rahmann Dam, located in Riverton, Nebraska, is a privately owned structure primarily designed for flood risk reduction along the TR-MID BR Thompson Creek.
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Summary
Completed in 1960, this earth dam stands at a height of 16.1 feet and spans 350 feet in length. With a storage capacity of 68.3 acre-feet, it serves a crucial role in mitigating potential flooding in the area.
Managed by the Nebraska Department of Natural Resources, Rahmann Dam is inspected regularly to ensure its structural integrity and compliance with state regulations. Despite being classified as having a low hazard potential, its condition assessment has not been rated as of the last inspection in April 2017. The dam's emergency action plan status and risk assessment measures are currently unspecified, indicating a potential area for further development and improvement in its risk management strategies.
As a vital piece of infrastructure in Franklin County, Nebraska, Rahmann Dam plays a key role in protecting the surrounding community from the impacts of flooding. With its specified purposes centered around flood risk reduction, this earth dam stands as a testament to the ongoing efforts to safeguard water resources and manage climate-related challenges in the region.
Year Completed |
1960 |
Dam Length |
350 |
Dam Height |
16.1 |
River Or Stream |
TR-MID BR THOMPSON CREEK |
Primary Dam Type |
Earth |
Surface Area |
4.8 |
Hydraulic Height |
16.1 |
Drainage Area |
0.53 |
Nid Storage |
68.3 |
Structural Height |
16.1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
16 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
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.
Rahmann Dam