Sd Noname 185 Reservoir Report
Nearby: Whidby Structnot Ratede 20 Prokop Dam
Last Updated: December 6, 2025
Sd Noname 185 is a private dam located in Jackson, South Dakota, with a significant hazard potential and a height of 22 feet.
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Summary
Built in 1950, this earth dam holds a maximum storage capacity of 70 acre-feet and has a normal storage of 35 acre-feet. Situated on a tributary of the White River, this dam plays a crucial role in managing the water resources in the region, with a maximum discharge capacity of 1200 cubic feet per second.
Managed by the South Dakota Department of Environment and Natural Resources (DENR), Sd Noname 185 is regulated, permitted, inspected, and enforced by the state. While the dam's condition assessment is not currently rated, it meets state jurisdiction and regulatory standards. With its location in a rural area and no associated structures, this dam serves as a key infrastructure for water resource management in the region and contributes to the overall climate resilience efforts.
With its history dating back to over 70 years, Sd Noname 185 stands as a testament to the importance of private dam structures in supporting water resource management in South Dakota. As climate change impacts continue to affect water availability and quality, dams like Sd Noname 185 play a crucial role in ensuring water security for communities and ecosystems in the region. As efforts to assess and manage risks associated with dams increase, Sd Noname 185 remains a significant asset in the state's water infrastructure network.
Year Completed |
1950 |
Dam Length |
520 |
Dam Height |
22 |
River Or Stream |
TRIB. WHITE RIVER |
Primary Dam Type |
Earth |
Hydraulic Height |
22 |
Nid Storage |
70 |
Hazard Potential |
Significant |
Nid Height |
22 |
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 185