Stoeser Dam #2 Reservoir Report
Nearby: Bob Stoeser Dam Stoeser Dam #3
Last Updated: December 6, 2025
Stoeser Dam #2, located in Stanley, South Dakota, is a privately owned Earth dam built in 1976 on the tributary of Willow Creek.
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Summary
The dam stands at 30 feet tall with a length of 500 feet, providing a storage capacity of 280 acre-feet. Despite its low hazard potential, the dam's risk assessment is moderate, indicating a level 3 risk.
The dam features an uncontrolled spillway with a width of 75 feet and has not been rated for its condition assessment. While it has not been inspected since 1999, the dam is regulated and permitted by the South Dakota Department of Agriculture and Natural Resources. The surrounding area is not densely populated, reducing the risk of potential damage in case of a breach. Overall, Stoeser Dam #2 serves as a crucial water resource in the region, ensuring water supply and flood control for the local community.
As a significant structure in the St. Paul District of the US Army Corps of Engineers, Stoeser Dam #2 plays a vital role in managing water resources in South Dakota. With its historical construction in the 1970s, the dam continues to provide essential services for the region. While it may require updated inspections and assessments, the dam remains a key component of the local water infrastructure, contributing to the overall sustainability and resilience of the area in the face of changing climate conditions.
Year Completed |
1976 |
Dam Length |
500 |
Dam Height |
30 |
River Or Stream |
TRIB. WILLOW CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
30 |
Nid Storage |
280 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
30 |
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.
Stoeser Dam #2