Sd Noname 286 Reservoir Report
Nearby: Sd Noname 287 Armstrong Irr. Dam
Last Updated: December 5, 2025
Sd Noname 286 is a private dam located in Haakon, South Dakota, along the TR-Cheyenne River.
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Summary
Built in 1958, this earthen dam stands at a height of 25 feet and has a storage capacity of 68 acre-feet. With a low hazard potential and a condition assessment of "Not Rated," the dam is regulated by the South Dakota Department of Environment and Natural Resources (DENR).
Although Sd Noname 286 has not been rated for its condition, it is regularly inspected, permitted, and enforced by the state regulatory agency. The dam plays a crucial role in water resource management in the area, providing a normal storage capacity of 44 acre-feet and a maximum discharge of 250 cubic feet per second. Despite its age, Sd Noname 286 continues to serve its purpose effectively, ensuring the safety and stability of the surrounding community.
With Dusty Johnson (R) as the representative for the St. Paul District, where the dam is located, Sd Noname 286 remains an important structure for the local ecosystem and water supply. As climate change continues to impact water resources, monitoring and maintaining dams like Sd Noname 286 will be essential in ensuring water security and resilience in the face of changing environmental conditions.
Year Completed |
1958 |
Dam Length |
275 |
Dam Height |
25 |
River Or Stream |
TR-CHEYENNE RIVER |
Primary Dam Type |
Earth |
Hydraulic Height |
25 |
Nid Storage |
68 |
Hazard Potential |
Low |
Nid Height |
25 |
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.
Sd Noname 286