Milesville Dam is an earth dam located in Haakon County, South Dakota, built in 1938. It carries a Low hazard potential classification.
Dam profile
NID height · 15 ft15 ft tall and 600 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 Milesville Dam
The primary purpose of Milesville 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? & Ma T's Land LLC (state). It impounds the Straighthead Creek.
The dam stands 15 feet tall and stretches 600 feet across, and has a maximum storage capacity of 280 acre-feet. Completed in 1938, 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.
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Location
| State | South Dakota |
| County | Haakon |
| Nearest City | None |
| River/Stream | Straighthead Creek |
| Coordinates | 44.48384, -101.65561 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 15 ft |
| Dam Height | 15 ft |
| Dam Length | 600 ft |
| Year Completed | 1938 (88 years old) |
Storage & Hydraulics
| NID Storage | 280 acre-ft |
| Max Storage | 280 acre-ft |
| Normal Storage | 110 acre-ft |
| Max Discharge | 1,250 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | S&pl? & Ma T's Land LLC |
| Owner Type | State |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | SD00881 |
| Federal ID | SD00881 |
| More Info | State Dam Safety Program |