Cobb is an earth dam located in St. Clair County, Alabama, built in 1950. It carries a Significant hazard potential classification.
Dam profile
NID height · 15 ft15 ft tall and 450 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 Cobb
The primary purpose of Cobb is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by W T Cobb (private). It impounds the Tr Big Canoe Creek near Ashville.
The dam stands 15 feet tall and stretches 450 feet across, and has a maximum storage capacity of 52 acre-feet. Completed in 1950, the structure is well-established, with more than 75 years of service.
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 | St. Clair |
| Nearest City | Ashville |
| River/Stream | Tr Big Canoe Creek |
| Coordinates | 33.80167, -86.31500 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 15 ft |
| Dam Length | 450 ft |
| Year Completed | 1950 (76 years old) |
Storage & Hydraulics
| NID Storage | 52 acre-ft |
| Max Storage | 52 acre-ft |
| Normal Storage | 44 acre-ft |
| Max Discharge | 360 cfs |
Ownership & Safety
| Purpose | Recreation |
| Owner | W T Cobb |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Not assessed |
| Emergency Action Plan | No |
Identifiers
| NID ID | AL01066 |
| Federal ID | AL01066 |
| More Info | ASDSO on Alabama (no state dam safety program) |