Brost Number 3 Reservoir Report
Nearby: Dykstra Number 10 Dykstra Number 9
Last Updated: December 8, 2025
Brost Number 3 is a private dam located in Jones, South Dakota, along the TR-White River.
°F
°F
mph
Wind
%
Humidity
Summary
Built in 1953 by the Natural Resources Conservation Service, this earth dam stands at a height of 25 feet and has a length of 309 feet. The dam has a storage capacity of 35 acre-feet, with a normal storage level of 27 acre-feet. Despite its age, the dam is currently rated as being in "Not Rated" condition with a low hazard potential.
This dam is under state jurisdiction and regulation by the South Dakota Department of Environment and Natural Resources (DENR). It is regularly inspected, permitted, and enforced by the state agency to ensure its safety and compliance with regulations. The dam's purpose and associated structures are not specified in the data, but it is known to have a maximum discharge capacity of 1008 cubic feet per second, indicating its importance for water resource management in the area.
Brost Number 3 is a key structure in the region, providing valuable water storage and flood control along the TR-White River. With its low hazard potential and state regulation, this dam plays a crucial role in the water management infrastructure of South Dakota. Enthusiasts of water resources and climate will find this dam's data and history to be of interest in understanding the challenges and importance of managing water resources in the region.
Year Completed |
1953 |
Dam Length |
309 |
Dam Height |
25 |
River Or Stream |
TR-WHITE RIVER |
Primary Dam Type |
Earth |
Hydraulic Height |
25 |
Nid Storage |
35 |
Hazard Potential |
Low |
Nid Height |
25 |
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 3