Brost Number 6 Reservoir Report
Nearby: Brost Number 5 Tornow Number 1
Last Updated: December 13, 2025
Brost Number 6, located in Jones County, South Dakota, is a privately owned earth dam completed in 1953.
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Summary
With a height of 32 feet and a storage capacity of 176 acre-feet, this dam serves the primary purpose of water resource management along the TR-White River. Managed by the Natural Resources Conservation Service, this structure is regulated by the South Dakota Department of Environment and Natural Resources, ensuring that it meets state inspection and enforcement standards.
Despite its low hazard potential and current condition assessment of 'Not Rated', Brost Number 6 plays a crucial role in maintaining water levels and flow in the White River watershed. With a maximum discharge capacity of 819 cubic feet per second, this dam provides essential flood protection and water supply benefits to the surrounding area. While lacking detailed risk assessment and emergency preparedness measures, the dam's stable state and oversight by state regulatory agencies ensure its continued functionality for the foreseeable future.
As a key component of the St. Paul District's water management infrastructure, Brost Number 6 stands as a testament to the importance of private investment in sustainable water resource management. With its historical significance and ongoing role in safeguarding the environment and communities downstream, this dam serves as a valuable asset in maintaining the health and resilience of the White River ecosystem in South Dakota.
Year Completed |
1953 |
Dam Length |
324 |
Dam Height |
32 |
River Or Stream |
TR-WHITE RIVER |
Primary Dam Type |
Earth |
Hydraulic Height |
32 |
Nid Storage |
176 |
Hazard Potential |
Low |
Nid Height |
32 |
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.
Brost Number 6