Jenson Dam is an earth dam located in Perkins County, South Dakota, built in 1934. It carries a Low hazard potential classification.
Dam profile
NID height · 29 ft29 ft tall and 600 ft long, taller than 65% of U.S. dams with a recorded height. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Jenson Dam
The primary purpose of Jenson Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by M. Jenson (private). It impounds the Tr-grand.
The dam stands 29 feet tall and stretches 600 feet across, and has a maximum storage capacity of 500 acre-feet. Completed in 1934, the structure is well-established, with more than 75 years of service.
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 | Perkins |
| Nearest City | None |
| River/Stream | Tr-grand |
| Coordinates | 45.61999, -102.46999 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 29 ft |
| Dam Height | 29 ft |
| Dam Length | 600 ft |
| Year Completed | 1934 (92 years old) |
Storage & Hydraulics
| NID Storage | 500 acre-ft |
| Max Storage | 500 acre-ft |
| Normal Storage | 360 acre-ft |
| Max Discharge | 670 cfs |
Ownership & Safety
| Purpose | Recreation |
| Owner | M. Jenson |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | SD00918 |
| Federal ID | SD00918 |
| More Info | State Dam Safety Program |