Imco Tailings Dam
Imco Tailings Dam is an earth dam located in Lander County, Nevada, built in 1975. It carries a Low hazard potential classification and has a fair condition assessment.
About Imco Tailings Dam
The primary purpose of Imco Tailings Dam 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 M-i Llc (private). It impounds the Reese River-os near Battle Mountain.
The dam stands 75 feet tall and stretches 320 feet across, creates a reservoir covering 23 acres, has a maximum storage capacity of 220 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1975, the structure is well into its service life at over 50 years old.
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. Its condition is rated fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. The most recent inspection on record was 06/26/2018.
At 75 feet, this dam is taller than 97% of all dams in the United States.
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Location
| State | Nevada |
| County | Lander |
| Nearest City | Battle Mountain |
| River/Stream | Reese River-os |
| Coordinates | 40.32000, -117.04000 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 75 ft |
| Dam Height | 70 ft |
| Dam Length | 320 ft |
| Year Completed | 1975 (51 years old) |
Storage & Hydraulics
| NID Storage | 220 acre-ft |
| Max Storage | 220 acre-ft |
| Normal Storage | 80 acre-ft |
| Surface Area | 23 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 8,500 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Tailings |
| Owner | M-I LLC |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 06/26/2018 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NV00154 |
| Federal ID | NV00154 |
| More Info | State Dam Safety Program |