Rock Mountain Lake is an earth dam located in Jefferson County, Alabama, built in 1936. It carries a Significant hazard potential classification.
Dam profile
NID height · 49 ft49 ft tall and 1,838 ft long, taller than 92% of U.S. dams with a recorded height. Height is drawn to scale against a ten-story building, about 100 ft; the profile is a generic embankment section and the water level is illustrative.
About Rock Mountain Lake
The primary purpose of Rock Mountain Lake is water supply. The dam stores water for municipal, industrial, or agricultural use, helping ensure a reliable supply for the surrounding area. The dam is owned by B@ham Ind Water Board (private). It impounds the Tr-barton Branch near Robinwood.
The dam stands 49 feet tall and stretches 1,838 feet across, and has a maximum storage capacity of 254 acre-feet. Completed in 1936, 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.
At 49 feet, this dam is taller than 92% of dams nationwide.
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Location
| State | Alabama |
| County | Jefferson |
| Nearest City | Robinwood |
| River/Stream | Tr-barton Branch |
| Coordinates | 33.62333, -86.75167 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 49 ft |
| Dam Length | 1,838 ft |
| Year Completed | 1936 (90 years old) |
Storage & Hydraulics
| NID Storage | 254 acre-ft |
| Max Storage | 254 acre-ft |
| Normal Storage | 184 acre-ft |
| Max Discharge | 296 cfs |
Ownership & Safety
| Purpose | Water Supply |
| Owner | B@ham Ind Water Board |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Not assessed |
| Emergency Action Plan | No |
Identifiers
| NID ID | AL01271 |
| Federal ID | AL01271 |
| More Info | ASDSO on Alabama (no state dam safety program) |