Sd Noname 204 Reservoir Report
Nearby: Sd Noname 62 Hilland Dam
Last Updated: December 5, 2025
Sd Noname 204 is a privately owned dam in Haakon, South Dakota, with a low hazard potential and a moderate risk assessment rating.
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Summary
Completed in 1955, this earth dam stands at 18 feet tall and has a length of 600 feet, providing a storage capacity of 85 acre-feet. The dam is regulated by the South Dakota Department of Environment and Natural Resources, with state permitting, inspection, and enforcement in place to ensure its safety and compliance with regulations.
Located on the TR CHEYENNE river, Sd Noname 204 is managed by the Natural Resources Conservation Service and falls under the jurisdiction of the St. Paul District of the US Army Corps of Engineers. Although the dam's condition is currently not rated, it is regularly inspected to maintain its integrity and minimize any potential risks. With a controlled spillway type and a maximum discharge capacity of 875 cubic feet per second, this dam plays a crucial role in water resource management in the region and contributes to the overall climate resilience of the area.
Year Completed |
1955 |
Dam Length |
600 |
Dam Height |
18 |
River Or Stream |
TR CHEYENNE |
Primary Dam Type |
Earth |
Hydraulic Height |
18 |
Nid Storage |
85 |
Hazard Potential |
Low |
Nid Height |
18 |
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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.
Sd Noname 204