Sd Noname 146 Reservoir Report
Nearby: Sd Noname 145 Sd Noname 143
Last Updated: December 13, 2025
Located in Jackson, South Dakota, Sd Noname 146 is a privately owned earth dam constructed in 1950 with a height of 17 feet and a length of 620 feet.
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Summary
Managed by the Natural Resources Conservation Service, this dam holds a maximum storage capacity of 120 acre-feet and serves the primary purpose of water resource management on the TR-Bad River. While the dam is regulated by the South Dakota Department of Environment and Natural Resources, it has a low hazard potential and is currently rated as "Not Rated" in terms of condition assessment.
Despite its age, Sd Noname 146 remains a crucial component of the local water infrastructure, providing essential water storage and flood control benefits to the surrounding area. The dam's strategic location along the TR-Bad River ensures effective management of water resources, with a maximum discharge capacity of 860 cubic feet per second. With state permitting, inspection, and enforcement in place, the dam continues to operate safely and efficiently, contributing to the overall water security of the region.
As water resource and climate enthusiasts, it is important to recognize the significance of structures like Sd Noname 146 in ensuring sustainable water management practices. With the involvement of state and federal agencies, as well as regular inspections and enforcement measures, this dam plays a vital role in mitigating potential risks and safeguarding the local community from water-related hazards. By understanding and supporting the continued maintenance and operation of such infrastructure, we can work towards a more resilient and sustainable water future for South Dakota and beyond.
Year Completed |
1950 |
Dam Length |
620 |
Dam Height |
17 |
River Or Stream |
TR-BAD RIVER |
Primary Dam Type |
Earth |
Hydraulic Height |
17 |
Nid Storage |
120 |
Hazard Potential |
Low |
Nid Height |
17 |
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 146