Sd Noname 66 Reservoir Report
Nearby: Sd Noname 67 Sd Noname 68
Last Updated: December 5, 2025
Sd Noname 66 is a privately owned dam located in Haakon, South Dakota, along the TR-BAD RIVER.
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Summary
Built in 1938, this earth dam stands at a height of 16 feet and has a storage capacity of 109 acre-feet. The dam serves multiple purposes, although specific details on its primary purpose are not provided in the data.
Managed by the South Dakota Department of Environment and Natural Resources (DENR), Sd Noname 66 is regulated, permitted, inspected, and enforced by the state. Despite being classified as having a low hazard potential, the dam's condition is currently listed as "Not Rated" and there is no information available on its emergency action plan or risk assessment. The dam has not been modified in recent years, and there is limited data on its associated structures or maintenance history.
Overall, Sd Noname 66 presents an intriguing case study for water resource and climate enthusiasts, as it showcases the importance of proper regulation and maintenance of private dams. With its historical significance and relatively small storage capacity, this dam serves as a reminder of the critical role that such structures play in managing water resources and mitigating potential risks in South Dakota's landscape.
Year Completed |
1938 |
Dam Length |
570 |
Dam Height |
16 |
River Or Stream |
TR-BAD RIVER |
Primary Dam Type |
Earth |
Hydraulic Height |
16 |
Nid Storage |
109 |
Hazard Potential |
Low |
Nid Height |
16 |
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 66