Sd Noname 173 Reservoir Report
Nearby: Missile 249 (Nid) Virgil Horton 1
Last Updated: December 6, 2025
Sd Noname 173 is a privately owned dam located in Pennington, South Dakota, along the TR BAD RIVER.
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Summary
Built in 1957, this earth dam stands at 16 feet in height and stretches 600 feet in length, with a storage capacity of 60 acre-feet. Although it is regulated by the South Dakota Department of Environment and Natural Resources, the dam is classified as low hazard potential and is currently rated as "Not Rated" in terms of condition assessment.
Managed by the Natural Resources Conservation Service, Sd Noname 173 plays a crucial role in water resource management in the region, with a maximum discharge capacity of 2100 cubic feet per second. Despite not having a designated primary purpose, the dam serves as a vital structure for flood control and water storage along the TR BAD RIVER. The dam is not owned or funded by any federal agency, indicating its significance as a privately maintained water resource infrastructure in South Dakota.
With its strategic location and modest hazard potential, Sd Noname 173 stands as a key component of the local water management system in Pennington County. While the dam has not been formally inspected or rated for condition, its presence underscores the importance of private ownership in maintaining critical water infrastructure in the face of changing climate patterns and increasing water demands. As climate enthusiasts and water resource advocates, understanding the role and status of structures like Sd Noname 173 is essential for safeguarding water resources and enhancing resilience in the face of climate variability.
Year Completed |
1957 |
Dam Length |
600 |
Dam Height |
16 |
River Or Stream |
TR BAD RIVER |
Primary Dam Type |
Earth |
Hydraulic Height |
16 |
Nid Storage |
60 |
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.
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Sd Noname 173