Brost Number 7 Reservoir Report
Nearby: Brost Number 6 Brost Number 8
Last Updated: December 8, 2025
Brost Number 7 is a privately owned earth dam located in Jones, South Dakota, with a height of 31 feet and a length of 291 feet.
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Summary
Built in 1963, this dam has a storage capacity of 30 acre-feet and a maximum discharge of 750 cubic feet per second. It is regulated by the South Dakota Department of Environment and Natural Resources, with state permitting, inspection, and enforcement in place to ensure its safety and compliance with regulations.
Managed by the Natural Resources Conservation Service, Brost Number 7 serves as a crucial water resource infrastructure along the TR-WHITERIVER. Despite its low hazard potential, the dam has not been rated for its condition assessment. Emergency action plans and risk assessment measures are yet to be implemented, highlighting areas for potential improvement in emergency preparedness. With the proximity to the river and the surrounding community, it is essential for stakeholders to stay updated on the dam's condition and potential risks.
As a vital component of the local water management system, Brost Number 7 plays a critical role in maintaining water supply and flood control in the region. Climate change and extreme weather events underscore the importance of ensuring the resilience and safety of such infrastructure. Continued monitoring, maintenance, and preparedness efforts will be essential to safeguarding this dam and its surrounding environment for the future.
Year Completed |
1963 |
Dam Length |
291 |
Dam Height |
31 |
River Or Stream |
TR-WHITERIVER |
Primary Dam Type |
Earth |
Hydraulic Height |
31 |
Nid Storage |
30 |
Hazard Potential |
Low |
Nid Height |
31 |
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 7