O. Drageset No.1 Reservoir Report
Nearby: R. Bierman No.2 O. Drageset No.2
Last Updated: December 10, 2025
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Summary
Drageset No.1 is a privately owned earthen dam located in Ziebach, South Dakota, along the TR MOREAU river. Constructed in 1948, this dam stands at a height of 18 feet and has a storage capacity of 108 acre-feet. Despite its low hazard potential, the dam is regulated by the South Dakota Department of Environment and Natural Resources (DENR), with regular inspections and enforcement measures to ensure its safety and compliance with state regulations.
Managed by private owners, O. Drageset No.1 serves primarily for water resource management and flood control along the TR MOREAU river. With a normal storage capacity of 57 acre-feet and a maximum discharge rate of 2100 cubic feet per second, this dam plays a crucial role in mitigating potential flood risks in the region. While the dam's condition is currently assessed as "Not Rated," it undergoes regular inspections to monitor its structural integrity and adherence to safety standards.
Located within the St. Paul District of the US Army Corps of Engineers, O. Drageset No.1 benefits from federal oversight and support, although it is not directly managed by the USACE. With its key role in water resource management and flood control, this earthen dam stands as a vital structure in safeguarding the surrounding area from potential water-related hazards.
Year Completed |
1948 |
Dam Length |
430 |
Dam Height |
18 |
River Or Stream |
TR MOREAU |
Primary Dam Type |
Earth |
Hydraulic Height |
18 |
Nid Storage |
108 |
Hazard Potential |
Low |
Nid Height |
18 |
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.
O. Drageset No.1