Sd Noname 55 Reservoir Report
Nearby: Sd Noname 54 Sd Noname 56
Last Updated: December 5, 2025
Sd Noname 55 is a privately owned dam in Haakon, South Dakota, with a low hazard potential and a height of 13 feet.
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Summary
Completed in 1950, this earth dam sits on the TR-BAD RIVER and has a storage capacity of 62 acre-feet. Despite being in a state-regulated area with permits, inspections, and enforcement in place, its condition assessment is currently labeled as "Not Rated."
Located in a rural area with no associated structures, Sd Noname 55 serves primarily for water resource management purposes. With a maximum discharge capacity of 1000 cubic feet per second and a length of 500 feet, this dam plays a crucial role in regulating water flow in the region. Although the dam has not been updated or modified in recent years, it remains a key component of the local water infrastructure.
Although lacking in some detailed data points such as inspection frequency and emergency preparedness measures, Sd Noname 55 stands as a testament to the importance of private ownership in maintaining essential water resources. With its historical significance and functional capacity, this dam continues to be a vital structure for water management in South Dakota.
Year Completed |
1950 |
Dam Length |
500 |
Dam Height |
13 |
River Or Stream |
TR-BAD RIVER |
Primary Dam Type |
Earth |
Hydraulic Height |
13 |
Nid Storage |
62 |
Hazard Potential |
Low |
Nid Height |
13 |
Seasonal Comparison
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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 55