Sd Noname 70 Reservoir Report
Nearby: Sd Noname 69 Sd Noname 67
Last Updated: December 5, 2025
Sd Noname 70 is a privately-owned dam located in Haakon, South Dakota, along the TR-BAD RIVER.
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Summary
Built in 1960, this earth dam stands at a height of 18 feet and has a storage capacity of 137 acre-feet. Managed by the Natural Resources Conservation Service, this structure plays a crucial role in water resource management in the region.
Despite its low hazard potential, Sd Noname 70 is regulated by the South Dakota Department of Environment and Natural Resources, ensuring that it meets all safety and inspection standards. With a maximum discharge capacity of 1875 cubic feet per second, this dam provides flood control and water storage benefits to the surrounding areas. While its condition is currently rated as 'Not Rated', regular inspections and maintenance help to ensure its continued functionality and safety.
This dam, situated within the St. Paul District of the US Army Corps of Engineers, serves as a key infrastructure for water supply and management in the region. With its strategic location and vital role in regulating water flow along the TR-BAD RIVER, Sd Noname 70 is a noteworthy structure for water resource and climate enthusiasts to study and appreciate.
Year Completed |
1960 |
Dam Length |
640 |
Dam Height |
18 |
River Or Stream |
TR-BAD RIVER |
Primary Dam Type |
Earth |
Hydraulic Height |
18 |
Nid Storage |
137 |
Hazard Potential |
Low |
Nid Height |
18 |
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 70