Thorstensen 3
Thorstensen 3 is an earth dam located in Dewey County, South Dakota, built in 1969. It carries a Low hazard potential classification.
About Thorstensen 3
The primary purpose of Thorstensen 3 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 Thorstensen (private). It impounds the Tr-moreau.
The dam stands 25 feet tall and stretches 270 feet across, and has a maximum storage capacity of 24 acre-feet. Completed in 1969, 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.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | South Dakota |
| County | Dewey |
| Nearest City | None |
| River/Stream | Tr-moreau |
| Coordinates | 45.22166, -101.02999 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 25 ft |
| Dam Height | 25 ft |
| Dam Length | 270 ft |
| Year Completed | 1969 (57 years old) |
Storage & Hydraulics
| NID Storage | 24 acre-ft |
| Max Storage | 24 acre-ft |
| Normal Storage | 12 acre-ft |
| Max Discharge | 1,800 cfs |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | THORSTENSEN |
| Owner Type | Private |
| Hazard Classification | Low |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | SD00233 |
| Federal ID | SD00233 |
| More Info | State Dam Safety Program |