W a Williamson is an earth dam located in Elmore County, Alabama, built in 1955. It carries a Significant hazard potential classification.
Dam profile
NID height · 32 ft32 ft tall and 660 ft long, taller than 74% 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 W a Williamson
The primary purpose of W a Williamson is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by W a Williamson (private). It impounds the Tr Coosada Creek near Coosada School Community.
The dam stands 32 feet tall and stretches 660 feet across, and has a maximum storage capacity of 144 acre-feet. Completed in 1955, the structure is well into its service life at over 50 years old.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life.
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Location
| State | Alabama |
| County | Elmore |
| Nearest City | Coosada School Community |
| River/Stream | Tr Coosada Creek |
| Coordinates | 32.51333, -86.37000 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 32 ft |
| Dam Length | 660 ft |
| Year Completed | 1955 (71 years old) |
Storage & Hydraulics
| NID Storage | 144 acre-ft |
| Max Storage | 144 acre-ft |
| Normal Storage | 134 acre-ft |
| Max Discharge | 150 cfs |
Ownership & Safety
| Purpose | Recreation |
| Owner | W a Williamson |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Not assessed |
| Emergency Action Plan | No |
Identifiers
| NID ID | AL00706 |
| Federal ID | AL00706 |
| More Info | ASDSO on Alabama (no state dam safety program) |