Stirling Number 1 Reservoir Report
Last Updated: December 14, 2025
Stirling Number 1 is a privately owned dam located in Jones, South Dakota, along the TR-Bad River.
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Summary
Constructed in 1958 by the Natural Resources Conservation Service, this earth dam stands at a height of 25 feet and has a maximum storage capacity of 53 acre-feet. With a low hazard potential and a condition assessment of "Not Rated," this dam plays a crucial role in water resource management in the region.
Despite being under state jurisdiction and regulation by the South Dakota Department of Environment and Natural Resources, Stirling Number 1 has not been assigned a Dam Safety Action Classification (DSAC) or undergone a risk assessment. However, the dam has a history of successful inspections, with state permitting, inspection, and enforcement all in place. The dam's emergency action plan status and risk management measures remain unspecified, suggesting room for improvement in emergency preparedness and response.
Overall, Stirling Number 1 serves as a significant infrastructure for water control and management in the region, providing essential storage and discharge capabilities for the TR-Bad River. As water resource and climate enthusiasts, understanding the operational and safety aspects of dams like Stirling Number 1 is crucial for sustainable water resource management and environmental conservation efforts in South Dakota and beyond.
Year Completed |
1958 |
Dam Length |
493 |
Dam Height |
25 |
River Or Stream |
TR-BAD RIVER |
Primary Dam Type |
Earth |
Hydraulic Height |
25 |
Nid Storage |
53 |
Hazard Potential |
Low |
Nid Height |
25 |
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.
Stirling Number 1