F. Cnot Ratedtis Reservoir Report
Nearby: F. Joens G.P. Joens
Last Updated: December 8, 2025
Located in Dewey, South Dakota, F.
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Summary
Cnot Ratedtis is a privately owned dam on the TR MOREAU river, regulated by the South Dakota Department of Environment and Natural Resources. Built in 1950, this earth dam stands at a height of 24 feet and has a storage capacity of 63 acre-feet. Despite being classified as low hazard potential, its condition is currently listed as "Not Rated."
With a maximum discharge of 1200 cubic feet per second, F. Cnot Ratedtis plays a crucial role in water resource management in the area. However, the lack of recent inspection data and a condition assessment raises concerns about its long-term reliability. It is essential for water resource and climate enthusiasts to keep a close watch on this dam and advocate for proper maintenance and monitoring to ensure its continued safety and functionality for the community.
Year Completed |
1950 |
Dam Length |
400 |
Dam Height |
24 |
River Or Stream |
TR MOREAU |
Primary Dam Type |
Earth |
Hydraulic Height |
24 |
Nid Storage |
63 |
Hazard Potential |
Low |
Nid Height |
24 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Moreau R Near Whitehorse Sd
|
35cfs |
Grand R At Little Eagle Sd
|
47cfs |
Moreau R Near Faith Sd
|
14cfs |
Oak Cr Near Wakpala Sd
|
10cfs |
Cheyenne R Near Plainview Sd
|
0cfs |
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.
F. Cnot Ratedtis