Williams Dam is an earth dam located in Edmunds County, South Dakota, built in 1994. It carries a Low hazard potential classification.
Dam profile
NID height · 12 ft12 ft tall and 370 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 Williams Dam
The primary purpose of Williams Dam is fish and wildlife pond. The dam creates habitat for fish and wildlife, supporting local ecosystems and potentially serving conservation goals. The dam is owned by Leroy Williams (private). It impounds the Trib. Snake Creek.
The dam stands 12 feet tall and stretches 370 feet across, creates a reservoir covering 12 acres, has a maximum storage capacity of 135 acre-feet, and collects water from a drainage area of 11 square miles. Completed in 1994, the structure is 32 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 | Edmunds |
| Nearest City | None |
| River/Stream | Trib. Snake Creek |
| Coordinates | 45.37698, -99.12777 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 12 ft |
| Dam Height | 12 ft |
| Dam Length | 370 ft |
| Year Completed | 1994 (32 years old) |
Storage & Hydraulics
| NID Storage | 135 acre-ft |
| Max Storage | 135 acre-ft |
| Normal Storage | 35 acre-ft |
| Surface Area | 12 acres |
| Drainage Area | 11 sq mi |
| Max Discharge | 900 cfs |
Ownership & Safety
| Purpose | Fish and Wildlife Pond |
| Owner | Leroy Williams |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | SD02388 |
| Federal ID | SD02388 |
| More Info | State Dam Safety Program |