Gail Vrooman Reservoir Report
Nearby: John Holloway Glen Bringman
Last Updated: December 8, 2025
Gail Vrooman, a privately owned dam located in Dewey, South Dakota, is regulated by the South Dakota Department of Environment and Natural Resources (DENR).
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Summary
This earth dam, completed in 1950, stands at a height of 20 feet and spans a length of 500 feet along the TR MOREAU river. With a storage capacity of 72 acre-feet, Gail Vrooman serves as a crucial water resource for the surrounding area, with a maximum discharge of 960 cubic feet per second.
Despite being classified as having a low hazard potential and not currently rated for its condition, Gail Vrooman plays a vital role in water management within the region. As a privately owned structure, it is subject to state regulations, inspections, and enforcement measures to ensure its safety and integrity. While specific details regarding its emergency action plan, risk assessment, and management measures are not provided, the dam's presence highlights the importance of monitoring and maintaining water infrastructure for climate resilience and resource sustainability.
As enthusiasts of water resources and climate, understanding the significance of dams like Gail Vrooman in regulating water flow, providing storage capacity, and mitigating flood risks is crucial. By recognizing the role of such structures in managing water resources effectively, we can work towards ensuring their continued functionality, resilience, and safety in the face of changing climate conditions and increasing water demands.
Year Completed |
1950 |
Dam Length |
500 |
Dam Height |
20 |
River Or Stream |
TR MOREAU |
Primary Dam Type |
Earth |
Hydraulic Height |
20 |
Nid Storage |
72 |
Hazard Potential |
Low |
Nid Height |
20 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Moreau R Near Whitehorse Sd
|
35cfs |
Grand R At Little Eagle Sd
|
47cfs |
Moreau R Near Faith Sd
|
14cfs |
Cheyenne R Near Plainview Sd
|
0cfs |
Oak Cr Near Wakpala Sd
|
10cfs |
Bad R Near Fort Pierre Sd
|
7cfs |
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.
Gail Vrooman