Imco Tailings Dam

REESE RIVER-OS· Lander, Nevada· Built 1975· Earth· 70 ft tall
Low Hazard Tailings Private

Key Takeaway

Imco Tailings Dam is classified as low hazard in Nevada. It was completed in 1975 and is 51 years old. Its primary use is tailings.

Physical Details

Dam Height 70 ft (taller than 89.1% in NV)
Dam Length320 ft
Dam TypeEarth
Max Storage220 acre-ft
Normal Storage80 acre-ft
Surface Area23 acres
Drainage Area0 sq mi
Max Discharge8,500 cfs
Year Completed1975 (51 years old)
NID IDNV00154

Safety Information

Low Hazard

No probable loss of human life and low economic/environmental losses expected.

Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?

Emergency Action Plan: No
Last Inspection: June 26, 2018
State Regulated: Yes
Regulatory Agency: NEVADA DWR

Ownership

M-I LLC

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Imco Tailings Dam?

Imco Tailings Dam is classified as Low Hazard. No probable loss of human life and low economic/environmental losses expected. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.

Who owns and operates Imco Tailings Dam?

Imco Tailings Dam is owned by M-I LLC (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Imco Tailings Dam built?

Imco Tailings Dam was completed in 1975, making it 51 years old. Many U.S. dams were built between the 1930s and 1970s during a period of major infrastructure investment.

What is the primary purpose of Imco Tailings Dam?

Imco Tailings Dam serves the following purposes: Tailings. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is Imco Tailings Dam?

Imco Tailings Dam has a dam height of 70 ft. Dam height is measured from the natural streambed at the downstream toe to the top of the dam, and may differ from the visible height.

When was Imco Tailings Dam last inspected?

Imco Tailings Dam was last inspected on June 26, 2018. Inspection dates indicate when a formal review occurred, not the results of that inspection.

Data from the National Inventory of Dams (NID) maintained by the US Army Corps of Engineers. Dam conditions may have changed since the last update. This site is not affiliated with USACE. Do not use for emergency planning — contact your local dam safety program.