Foster Number 2 Reservoir Report
Nearby: Foster Number 3 Foster Number 1
Last Updated: December 8, 2025
Located in Jones, South Dakota, Foster Number 2 is a privately owned earth dam completed in 1955 with a primary purpose that remains unspecified.
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Summary
The dam stands at a height of 29 feet and spans 561 feet in length, providing a storage capacity of 75 acre-feet. Situated on the TR-BAD RIVER, this structure falls under the regulatory jurisdiction of the South Dakota Department of Environment and Natural Resources (DENR) and is subject to state permitting, inspection, and enforcement protocols.
Managed by the Natural Resources Conservation Service, Foster Number 2 has a low hazard potential with a current condition assessment of "Not Rated." Despite lacking recent inspection data, the dam's normal storage capacity of 66 acre-feet and maximum discharge of 375 cubic feet per second indicate its significant role in water resource management for the surrounding area. With a strategic location in Fort Pierre and under the oversight of state regulatory agencies, Foster Number 2 serves as a key asset in maintaining water quality and flow within the region's hydrological system.
Year Completed |
1955 |
Dam Length |
561 |
Dam Height |
29 |
River Or Stream |
TR-BAD RIVER |
Primary Dam Type |
Earth |
Hydraulic Height |
29 |
Nid Storage |
75 |
Hazard Potential |
Low |
Nid Height |
29 |
Seasonal Comparison
Weather Forecast
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.
Foster Number 2