Imp. No. 1 is a dam located in Walker County, Alabama. It carries a Significant hazard potential classification.
Dam profile
NID height · 35 ft35 ft tall, taller than 80% of U.S. dams with a recorded height. 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 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 Drummond Co. Inc. (private).
The dam stands 35 feet tall, has a maximum storage capacity of 69 acre-feet, and collects water from a drainage area of 0 square miles.
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 35 feet, this dam is taller than 80% of dams nationwide.
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Location
| State | Alabama |
| County | Walker |
| Nearest City | Gorgas |
| Coordinates | 33.62305, -87.20834 |
Physical Characteristics
| NID Height | 35 ft |
| Dam Height | 35 ft |
Storage & Hydraulics
| NID Storage | 69 acre-ft |
| Max Storage | 69 acre-ft |
| Drainage Area | 0 sq mi |
| Max Discharge | 3,550 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Tailings |
| Owner | Drummond Co. Inc. |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Not assessed |
| Emergency Action Plan | No |
Identifiers
| NID ID | AL83475 |
| Federal ID | AL83475 |
| More Info | ASDSO on Alabama (no state dam safety program) |