Osborne Lake Dam is an earth dam located in Jefferson County, Alabama, built in 1969. It carries a High hazard potential classification.
Dam profile
NID height · 49 ft49 ft tall and 416 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 Osborne Lake Dam
The primary purpose of Osborne Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Mark E Osborne (private). It impounds the Trib. of Cahaba R. near Resid Below Drummond Lake.
The dam stands 49 feet tall and stretches 416 feet across, and has a maximum storage capacity of 323 acre-feet. Completed in 1969, the structure is well into its service life at over 50 years old.
This dam carries a high hazard potential classification, which means that a failure or uncontrolled release of water would likely cause loss of human life. This classification reflects the consequences of failure, not the likelihood — it indicates that people live or work in the area downstream. Notably, no emergency action plan is currently on file for this high-hazard dam.
At 49 feet, this dam is taller than 92% of dams nationwide.
Living Downstream
If you live or work downstream of this dam, consider taking these steps: learn your local evacuation routes, check whether your county emergency management office has a dam failure inundation map, and sign up for local emergency alerts. Alabama is the only state with no dam safety program, so there is no state office to contact about this structure; the federal record above is what exists. ASDSO's page on Alabama explains the gap.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Alabama |
| County | Jefferson |
| Nearest City | Resid Below Drummond Lake |
| River/Stream | Trib. of Cahaba R. |
| Coordinates | 33.51964, -86.68536 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 49 ft |
| Dam Length | 416 ft |
| Year Completed | 1969 (57 years old) |
Storage & Hydraulics
| NID Storage | 323 acre-ft |
| Max Storage | 323 acre-ft |
| Normal Storage | 271 acre-ft |
| Max Discharge | 4,452 cfs |
Ownership & Safety
| Purpose | Recreation |
| Owner | Mark E Osborne |
| Owner Type | Private |
| Hazard Classification | High |
| Condition Assessment | Not assessed |
| Emergency Action Plan | No |
Identifiers
| NID ID | AL01531 |
| Federal ID | AL01531 |
| More Info | ASDSO on Alabama (no state dam safety program) |