Sd Noname 168 Reservoir Report
Nearby: Sd Noname 161 Sd Noname 169
Last Updated: December 6, 2025
Sd Noname 168 is a privately owned dam located in Jackson, South Dakota, with a low hazard potential but a significant historical impact.
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Summary
The earth dam, completed in 1940, stands at 23 feet tall and spans a length of 670 feet along the TR-BAD RIVER. Managed by the South Dakota Department of Environment and Natural Resources (DENR), this dam has a normal storage capacity of 55 acre-feet and a maximum storage of 120 acre-feet, with a maximum discharge rate of 1000 cfs.
Despite its age and lack of recent condition assessments, Sd Noname 168 remains under state regulation and inspection, with all necessary permitting, enforcement, and safety measures in place. It is interesting to note that this dam does not have a designated primary purpose or associated structures, making it a unique and somewhat mysterious feature along the river. With its relatively small size and isolated location in the rural county, Sd Noname 168 serves as a reminder of the intricate network of water resource infrastructure that supports communities and ecosystems across the region.
For water resource and climate enthusiasts, Sd Noname 168 presents an intriguing case study of a lesser-known dam with a rich history and a low but potentially underestimated hazard potential. Its location within the St. Paul District of the US Army Corps of Engineers, under the jurisdiction of the state of South Dakota, adds layers of complexity to its management and oversight. As the debate over aging infrastructure and climate resilience continues, Sd Noname 168 offers a glimpse into the challenges and opportunities of maintaining and adapting water resource systems in a changing environment.
Year Completed |
1940 |
Dam Length |
670 |
Dam Height |
23 |
River Or Stream |
TR-BAD RIVER |
Primary Dam Type |
Earth |
Hydraulic Height |
23 |
Nid Storage |
120 |
Hazard Potential |
Low |
Nid Height |
23 |
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 168