Flanders Dam Reservoir Report
Last Updated: December 13, 2025
Flanders Dam, located in Knox, Nebraska, is a private earth dam designed by the USDA NRCS for flood risk reduction along the TR-Missouri River.
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Summary
Completed in 1959, the dam stands at 38 feet high with a hydraulic height of 35 feet and a structural height of 49 feet. It spans 295 feet in length and has a storage capacity of 64 acre-feet, with a normal storage of 7 acre-feet.
Although Flanders Dam is state regulated and has undergone inspections, its condition assessment is marked as poor, raising concerns about its long-term stability and effectiveness in flood risk reduction. The dam's hazard potential is categorized as low, but with a risk management measures and emergency action plan in place, the dam's overall safety and functionality can be improved. As a key structure in the St. Paul District, Flanders Dam plays a crucial role in protecting the surrounding area from potential flooding events and ensuring the safety of residents and wildlife.
Given its critical role in flood risk reduction and its poor condition assessment, Flanders Dam warrants further attention and investment to enhance its resilience and longevity. With proper maintenance and risk management measures in place, Flanders Dam can continue to serve as a vital water resource infrastructure in Nebraska, safeguarding communities and ecosystems from the impacts of extreme weather events and climate change.
Year Completed |
1959 |
Dam Length |
295 |
Dam Height |
38 |
River Or Stream |
TR-MISSOURI RIVER |
Primary Dam Type |
Earth |
Surface Area |
1 |
Hydraulic Height |
35 |
Drainage Area |
2.4 |
Nid Storage |
64 |
Structural Height |
49 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
49 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Ponca Creek At Verdel
|
23cfs |
Niobrara River Nr. Verdel
|
517cfs |
Bazile Creek Near Niobrara
|
192cfs |
Verdigre C Nr Verdigre
|
206cfs |
Bazile Creek At Center
|
85cfs |
James R Near Scotland Sd
|
706cfs |
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.
Flanders Dam