Sd Noname 260 Reservoir Report
Nearby: Sd Noname 256 Sd No Name 263
Last Updated: December 5, 2025
Sd Noname 260 is a privately owned dam located in Haakon, South Dakota, along the TR-Cheyenne River offstream.
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Summary
Constructed in 1950 by the Natural Resources Conservation Service, this earth dam stands at a height of 25 feet with a length of 100 feet. With a maximum storage capacity of 80 acre-feet and a normal storage level of 57 acre-feet, Sd Noname 260 plays a crucial role in water resource management in the region.
Managed by the South Dakota Department of Environment and Natural Resources, Sd Noname 260 is regulated, inspected, and enforced to ensure its structural integrity and compliance with safety standards. Despite being classified as having low hazard potential and a condition assessment of "Not Rated," the dam serves as a vital infrastructure for flood control and water supply. With a maximum discharge capacity of 1500 cubic feet per second, Sd Noname 260 plays a key role in mitigating potential risks associated with water flow in the region.
As a significant component of the St. Paul District in South Dakota, Sd Noname 260 stands as a testament to the collaborative efforts between private owners and government agencies in managing water resources and climate-related challenges. With its historical significance dating back to the mid-20th century, this dam continues to contribute to the sustainable development and resilience of the local community in Haakon County, South Dakota.
Year Completed |
1950 |
Dam Length |
100 |
Dam Height |
25 |
River Or Stream |
TR-CHEYENNE RIVER OFFSTREAM |
Primary Dam Type |
Earth |
Hydraulic Height |
25 |
Nid Storage |
80 |
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 260