Lewton Dam is an earth dam located in Harding County, South Dakota, built in 1950. It carries a Low hazard potential classification.
Dam profile
NID height · 12 ft12 ft tall and 545 ft long. 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 Lewton Dam
The primary purpose of Lewton Dam 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 Robert Lewton (private). It impounds the Slick Sreek.
The dam stands 12 feet tall and stretches 545 feet across, creates a reservoir covering 28 acres, has a maximum storage capacity of 325 acre-feet, and collects water from a drainage area of 39 square miles. Completed in 1950, 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 11/05/1985. That was over 40 years ago.
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Location
| State | South Dakota |
| County | Harding |
| Nearest City | None |
| River/Stream | Slick Sreek |
| Coordinates | 45.65466, -104.01328 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 12 ft |
| Dam Height | 12 ft |
| Dam Length | 545 ft |
| Year Completed | 1950 (76 years old) |
Storage & Hydraulics
| NID Storage | 325 acre-ft |
| Max Storage | 325 acre-ft |
| Normal Storage | 56 acre-ft |
| Surface Area | 28 acres |
| Drainage Area | 39 sq mi |
| Max Discharge | 150,570 cfs |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | Robert Lewton |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 11/05/1985 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | SD02154 |
| Federal ID | SD02154 |
| More Info | State Dam Safety Program |