Katherine Allison Dam is an earth dam located in Sumter County, Alabama, built in 1965. It carries a Significant hazard potential classification.
Dam profile
NID height · 18 ft18 ft tall and 500 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 Katherine Allison Dam
The primary purpose of Katherine Allison Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Katherine Allison Estate (private). It impounds the Tr-ponkabia Creek near Brewersville.
The dam stands 18 feet tall and stretches 500 feet across, and has a maximum storage capacity of 51 acre-feet. Completed in 1965, 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 | Sumter |
| Nearest City | Brewersville |
| River/Stream | Tr-ponkabia Creek |
| Coordinates | 32.54667, -88.11667 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 18 ft |
| Dam Length | 500 ft |
| Year Completed | 1965 (61 years old) |
Storage & Hydraulics
| NID Storage | 51 acre-ft |
| Max Storage | 51 acre-ft |
| Normal Storage | 51 acre-ft |
| Max Discharge | 210 cfs |
Ownership & Safety
| Purpose | Recreation |
| Owner | Katherine Allison Estate |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Not assessed |
| Emergency Action Plan | No |
Identifiers
| NID ID | AL01482 |
| Federal ID | AL01482 |
| More Info | ASDSO on Alabama (no state dam safety program) |