Sd Noname 262 Reservoir Report
Nearby: Sd Noname 255 Sd Noname 288
Last Updated: December 5, 2025
Sd Noname 262 is a privately-owned dam located in Haakon County, South Dakota, along the TR-Cheyenne River.
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Summary
Built in 1954, this earth dam stands at a height of 19 feet and has a storage capacity of 61 acre-feet. While its primary purpose is not specified, the dam is state-regulated by the South Dakota Department of Environment and Natural Resources (DENR), with regular inspections, permitting, and enforcement in place to ensure its safety and compliance with regulations.
Despite being categorized as having a low hazard potential and a "Not Rated" condition assessment, Sd Noname 262 plays a crucial role in water resource management in the region. With a maximum discharge of 288 cubic feet per second, this dam provides essential flood control and water storage benefits for the surrounding area. Additionally, its location within the St. Paul District of the US Army Corps of Engineers signifies the importance of this structure in the broader context of water infrastructure in South Dakota.
As a key feature along the TR-Cheyenne River, Sd Noname 262 is not only a vital component of the local water resource system but also reflects the intricate network of dams and structures that contribute to climate resilience in the region. With its historical significance dating back to the 1950s and ongoing state oversight, this dam serves as a testament to the ongoing efforts to manage water resources effectively while balancing environmental and regulatory considerations.
Year Completed |
1954 |
Dam Length |
105 |
Dam Height |
19 |
River Or Stream |
TR-CHEYENNE RIVER |
Primary Dam Type |
Earth |
Hydraulic Height |
19 |
Nid Storage |
61 |
Hazard Potential |
Low |
Nid Height |
19 |
Seasonal Comparison
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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 262