Bob Stoeser Dam Reservoir Report
Nearby: Stoeser Dam #2 Stoeser Dam #3
Last Updated: December 13, 2025
Bob Stoeser Dam, located in Stanley, South Dakota, is a private dam constructed in 1996 on a tributary of Willow Creek.
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Summary
This Earth-type dam stands at a height of 22 feet and spans a length of 320 feet, with a maximum storage capacity of 93 acre-feet. The dam is regulated by the South Dakota Department of Environment and Natural Resources (DENR), with state permitting, inspection, and enforcement in place to ensure its safety and compliance with regulations.
Despite being classified as having a low hazard potential, Bob Stoeser Dam is considered to have a moderate risk level (3) based on a risk assessment. The spillway, with a width of 65 feet, is of the uncontrolled type. The dam has not been rated for its condition assessment, and there is no emergency action plan (EAP) in place at the moment. With a maximum discharge capacity of 880 cubic feet per second, the dam plays a crucial role in water resource management in the area, serving as a key infrastructure for flood control and water storage.
Bob Stoeser Dam, situated in a scenic location in South Dakota, represents a vital piece of infrastructure for the local community. Its presence on the landscape serves as a reminder of the importance of water resource management and the need for continued monitoring and maintenance to ensure its long-term stability and safety. Enthusiasts of water resources and climate will find interest in the intricate details of this dam and the role it plays in the broader ecosystem of the region.
Year Completed |
1996 |
Dam Length |
320 |
Dam Height |
22 |
River Or Stream |
TRIB. WILLOW CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
22 |
Drainage Area |
1 |
Nid Storage |
93 |
Hazard Potential |
Low |
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.
Bob Stoeser Dam