Sd Noname 279 Reservoir Report
Nearby: Sd Noname 269 Sd Noname 270
Last Updated: December 6, 2025
Sd Noname 279 is a privately owned dam located in Haakon, South Dakota, along the TR-Cheyenne River.
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Summary
Built in 1970 by the Natural Resources Conservation Service, this earth dam stands at 28 feet high and stretches 165 feet in length, with a storage capacity of 90 acre-feet. Despite its low hazard potential, the dam is regulated by the South Dakota Department of Environment and Natural Resources, ensuring regular inspections and enforcement of safety measures.
The dam's primary purpose and associated structures are not specified in the data, but its condition assessment is marked as "Not Rated." While the dam has not been assigned an Emergency Action Plan (EAP) or undergone risk assessment, it meets state permitting requirements and has state jurisdiction. With a maximum discharge capacity of 875 cubic feet per second and a normal storage capacity of 66 acre-feet, Sd Noname 279 plays a crucial role in managing water resources in the area.
Located within the St. Paul District of the US Army Corps of Engineers, Sd Noname 279 is a key feature in the local water management infrastructure. The dam's association with the Cheyenne River highlights its importance in regulating water flow and providing flood control measures for the surrounding area. Climate and water resource enthusiasts will find Sd Noname 279 an intriguing subject for further study and appreciation of the intricate interaction between human structures and natural hydrological systems.
Year Completed |
1970 |
Dam Length |
165 |
Dam Height |
28 |
River Or Stream |
TR-CHEYENNE RIVER |
Primary Dam Type |
Earth |
Hydraulic Height |
28 |
Nid Storage |
90 |
Hazard Potential |
Low |
Nid Height |
28 |
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 279