Sd Noname 261 Reservoir Report
Nearby: Sd Noname 160 Sd Noname 156
Last Updated: December 6, 2025
Sd Noname 261 is a privately owned dam located in Haakon, South Dakota, along the TR-BAD RIVER.
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Summary
Constructed in 1957, this earth dam stands at 26 feet in height and spans 125 feet in length, with a storage capacity of 90 acre-feet. Managed by the South Dakota Department of Environment and Natural Resources, this dam is regulated, permitted, inspected, and enforced by state agencies to ensure its safety and functionality.
Despite its low hazard potential and current "Not Rated" condition assessment, Sd Noname 261 plays a crucial role in water resource management and climate resilience efforts in the region. With a maximum discharge capacity of 7500 cubic feet per second, this dam serves to regulate flow, store water, and mitigate flood risks in the area. The dam's strategic location and operational features contribute to its importance in maintaining water quality, supporting irrigation, and enhancing overall environmental sustainability.
As a non-federal dam, Sd Noname 261 exemplifies the collaborative efforts between private owners and state agencies in effectively managing water resources and infrastructure. With its compliance with state regulations, consistent inspections, and emergency response preparedness, this dam stands as a vital component in the local water management system, highlighting the significance of public-private partnerships in ensuring the resilience and sustainability of water resources in South Dakota.
Year Completed |
1957 |
Dam Length |
125 |
Dam Height |
26 |
River Or Stream |
TR-BAD RIVER |
Primary Dam Type |
Earth |
Hydraulic Height |
26 |
Nid Storage |
90 |
Hazard Potential |
Low |
Nid Height |
26 |
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 261