Brost Number 9
Brost Number 9 is an earth dam located in Jones County, South Dakota, built in 1955. It carries a Low hazard potential classification.
About Brost Number 9
The primary purpose of Brost Number 9 is fire protection, stock, or small fish pond. The dam maintains a small impoundment used for fire suppression, livestock watering, or as a fish pond. The dam is owned by Herman Brost (private). It impounds the Tr-white River.
The dam stands 32 feet tall and stretches 534 feet across, and has a maximum storage capacity of 89 acre-feet. Completed in 1955, the structure is well into its service life at over 50 years old.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life.
At 32 feet, this dam is taller than 76% of dams nationwide.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | South Dakota |
| County | Jones |
| Nearest City | None |
| River/Stream | Tr-white River |
| Coordinates | 43.82833, -100.87999 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 32 ft |
| Dam Height | 32 ft |
| Dam Length | 534 ft |
| Year Completed | 1955 (71 years old) |
Storage & Hydraulics
| NID Storage | 89 acre-ft |
| Max Storage | 89 acre-ft |
| Normal Storage | 68 acre-ft |
| Max Discharge | 1,008 cfs |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | HERMAN BROST |
| Owner Type | Private |
| Hazard Classification | Low |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | SD00147 |
| Federal ID | SD00147 |
| More Info | State Dam Safety Program |