Sd Noname 206 Reservoir Report
Nearby: Bernard Armstrong Sd Noname 205
Last Updated: December 6, 2025
Sd Noname 206 is a privately owned dam located in Haakon County, South Dakota, along the TR BAD RIVER.
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Summary
Built in 1960 by the Natural Resources Conservation Service, this earth dam stands at a height of 13 feet and has a storage capacity of 52 acre-feet. With a low hazard potential and a moderate risk assessment rating of 3, the dam is regulated by the South Dakota Department of Environment and Natural Resources and is subject to regular inspection, permitting, and enforcement.
Despite its relatively small size, Sd Noname 206 plays a crucial role in water resource management and flood control in the region. With a maximum discharge capacity of 216 cubic feet per second, the dam helps mitigate potential flooding events along the TR BAD RIVER. The dam's primary purpose and specific design features, such as its uncontrolled spillway and earth construction type, reflect its focus on providing sustainable water management solutions while minimizing environmental impact.
As an essential piece of infrastructure in the St. Paul District, Sd Noname 206 serves as a testament to the importance of private ownership in maintaining and operating critical water resource structures. With its history of successful operation and regulatory compliance, this dam stands as a model for sustainable water resource management practices in the state of South Dakota.
Year Completed |
1960 |
Dam Length |
115 |
Dam Height |
13 |
River Or Stream |
TR BAD RIVER |
Primary Dam Type |
Earth |
Hydraulic Height |
13 |
Nid Storage |
52 |
Hazard Potential |
Low |
Nid Height |
13 |
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 206