Imp No.1 is a dam located in Jefferson County, Alabama. It carries a Low hazard potential classification.
Dam profile
NID height · 100 ft100 ft tall, taller than 98% 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 Imp No.1
The primary purpose of Imp No.1 is tailings. Tailings dams contain waste material from mining operations — typically a slurry of finely ground rock left over after valuable minerals have been extracted. These structures require ongoing monitoring because tailings can contain heavy metals and other contaminants. The dam is owned by Jim Walters Resources (private).
The dam stands 100 feet tall, has a maximum storage capacity of 250 acre-feet, and collects water from a drainage area of 0 square miles.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life.
At 100 feet, this dam is taller than 98% of all dams in the United States.
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Location
| State | Alabama |
| County | Jefferson |
| Nearest City | Bessie Junction |
| Coordinates | 33.63333, -87.03333 |
Physical Characteristics
| NID Height | 100 ft |
| Dam Height | 100 ft |
Storage & Hydraulics
| NID Storage | 250 acre-ft |
| Max Storage | 250 acre-ft |
| Drainage Area | 0 sq mi |
| Max Discharge | 285 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Tailings |
| Owner | Jim Walters Resources |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | No |
Identifiers
| NID ID | AL83454 |
| Federal ID | AL83454 |
| More Info | ASDSO on Alabama (no state dam safety program) |