A. Dosch Reservoir Report
Nearby: L. Woodward F. Miller
Last Updated: December 6, 2025
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Summary
Dosch, located in Dupree, South Dakota, stands as a testament to the importance of water resource management in the region. Constructed in 1938, this earth dam serves the primary purpose of water storage with a maximum capacity of 127 acre-feet and a normal storage level of 51 acre-feet. The dam spans 60 feet in length and reaches a height of 18 feet, impacting the flow of the TR-Cheyenne River.
Managed by the South Dakota Department of Environment and Natural Resources (DENR), A. Dosch is regulated, permitted, inspected, and enforced by state authorities, ensuring its structural integrity and compliance with safety standards. Despite being categorized as low hazard potential, the condition assessment of the dam remains unrated, highlighting the need for ongoing monitoring and maintenance to uphold its reliability in the face of changing climate conditions.
With a history of over 80 years of service, A. Dosch represents a critical piece of infrastructure in the water resource network of Ziebach County. Supported by state jurisdiction and oversight, this dam serves as a key component in managing water flow, storage, and discharge in the region. As climate change impacts continue to unfold, the importance of maintaining and enhancing the resilience of structures like A. Dosch becomes increasingly evident for the sustainable management of water resources in South Dakota.
Year Completed |
1938 |
Dam Length |
60 |
Dam Height |
18 |
River Or Stream |
TR-CHEYENNE |
Primary Dam Type |
Earth |
Hydraulic Height |
18 |
Nid Storage |
127 |
Hazard Potential |
Low |
Nid Height |
18 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Moreau R Near Faith Sd
|
14cfs |
Cheyenne R Near Plainview Sd
|
0cfs |
Moreau R Near Whitehorse Sd
|
35cfs |
Grand R At Little Eagle Sd
|
47cfs |
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.
A. Dosch