Jensen No.1
Jensen No.1 is an earth dam located in Mellette County, South Dakota, built in 1965. It carries a Low hazard potential classification.
About Jensen No.1
The primary purpose of Jensen No.1 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 Wm Jensen (private). It impounds the Trib-cottonwood Creek.
The dam stands 25 feet tall and stretches 460 feet across, and has a maximum storage capacity of 21 acre-feet. Completed in 1965, 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.
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Location
| State | South Dakota |
| County | Mellette |
| Nearest City | None |
| River/Stream | Trib-cottonwood Creek |
| Coordinates | 43.60499, -100.87666 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 25 ft |
| Dam Height | 25 ft |
| Dam Length | 460 ft |
| Year Completed | 1965 (61 years old) |
Storage & Hydraulics
| NID Storage | 21 acre-ft |
| Max Storage | 21 acre-ft |
| Normal Storage | 17 acre-ft |
| Max Discharge | 750 cfs |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | WM JENSEN |
| Owner Type | Private |
| Hazard Classification | Low |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | SD01246 |
| Federal ID | SD01246 |
| More Info | State Dam Safety Program |