Wells Dam is an earth dam located in Brule County, South Dakota, built in 1935. It carries a Low hazard potential classification.
Dam profile
NID height · 30 ft30 ft tall and 610 ft long, taller than 68% 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 Wells Dam
The primary purpose of Wells Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by S&pl (state). It impounds the Tr-missouri.
The dam stands 30 feet tall and stretches 610 feet across, and has a maximum storage capacity of 500 acre-feet. Completed in 1935, 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. The most recent inspection on record was 10/02/2010. That was over 16 years ago.
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Location
| State | South Dakota |
| County | Brule |
| Nearest City | None |
| River/Stream | Tr-missouri |
| Coordinates | 43.89051, -99.10398 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 30 ft |
| Dam Height | 30 ft |
| Dam Length | 610 ft |
| Year Completed | 1935 (91 years old) |
Storage & Hydraulics
| NID Storage | 500 acre-ft |
| Max Storage | 500 acre-ft |
| Normal Storage | 300 acre-ft |
| Max Discharge | 1,260 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | S&pl |
| Owner Type | State |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 10/02/2010 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | SD00718 |
| Federal ID | SD00718 |
| More Info | State Dam Safety Program |