Williamson Lake Dam is an earth dam located in Polk County, Arkansas, built in 1966. It carries a Low hazard potential classification.
Dam profile
NID height · 17 ft17 ft tall and 615 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 Williamson Lake Dam
The primary purpose of Williamson Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by G Williamson (private). It impounds the Heartsill Creek near Greenwood.
The dam stands 17 feet tall and stretches 615 feet across, and has a maximum storage capacity of 95 acre-feet. Completed in 1966, 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 | Arkansas |
| County | Polk |
| Nearest City | Greenwood |
| River/Stream | Heartsill Creek |
| Coordinates | 34.23667, -94.28333 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 17 ft |
| Dam Height | 17 ft |
| Dam Length | 615 ft |
| Year Completed | 1966 (60 years old) |
Storage & Hydraulics
| NID Storage | 95 acre-ft |
| Max Storage | 95 acre-ft |
| Normal Storage | 56 acre-ft |
| Max Discharge | 2,133 cfs |
Ownership & Safety
| Purpose | Recreation |
| Owner | G Williamson |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | AR00933 |
| Federal ID | AR00933 |
| More Info | State Dam Safety Program |