L and M is an earth dam located in St. Clair County, Alabama, built in 1954. It carries a Significant hazard potential classification.
Dam profile
NID height · 20 ft20 ft tall and 700 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 L and M
The primary purpose of L and M is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Mountainview Lake Inc (private). It impounds the Tr Big Black Creek near Whites Chapel Ala.
The dam stands 20 feet tall and stretches 700 feet across, and has a maximum storage capacity of 200 acre-feet. Completed in 1954, 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 | St. Clair |
| Nearest City | Whites Chapel Ala |
| River/Stream | Tr Big Black Creek |
| Coordinates | 33.72167, -86.45000 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 20 ft |
| Dam Length | 700 ft |
| Year Completed | 1954 (72 years old) |
Storage & Hydraulics
| NID Storage | 200 acre-ft |
| Max Storage | 200 acre-ft |
| Normal Storage | 140 acre-ft |
| Max Discharge | 1,200 cfs |
Ownership & Safety
| Purpose | Recreation |
| Owner | Mountainview Lake Inc |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Not assessed |
| Emergency Action Plan | No |
Identifiers
| NID ID | AL01052 |
| Federal ID | AL01052 |
| More Info | ASDSO on Alabama (no state dam safety program) |