Sanderson Number 2 Reservoir Report
Nearby: Barton Number 2 Sanderson Number 1
Last Updated: December 6, 2025
Sanderson Number 2 is a privately owned earth dam located in Jones, South Dakota, along the TR-BAD River.
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Summary
Built in 1955 by the Natural Resources Conservation Service, this dam is regulated by the South Dakota Department of Environment and Natural Resources. With a height of 25 feet and a length of 546 feet, it has a maximum storage capacity of 38 acre-feet and a normal storage capacity of 23 acre-feet. The dam has a low hazard potential and has not been rated for its condition.
Despite being in operation for over half a century, Sanderson Number 2 has not undergone recent inspections or condition assessments. It is crucial for the dam owner to prioritize regular maintenance and assessments to ensure its safety and functionality. With a maximum discharge rate of 756 cubic feet per second, it is essential to have emergency action plans in place to mitigate any potential risks to downstream communities in case of a dam failure. Climate enthusiasts and water resource professionals should keep a close eye on the maintenance and monitoring of Sanderson Number 2 to ensure the safety and sustainability of this vital infrastructure.
Year Completed |
1955 |
Dam Length |
546 |
Dam Height |
25 |
River Or Stream |
TR-BAD RIVER |
Primary Dam Type |
Earth |
Hydraulic Height |
25 |
Nid Storage |
38 |
Hazard Potential |
Low |
Nid Height |
25 |
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.
Sanderson Number 2