Mill 5/6 East Tailings Storage Facility

MAGGIE CK-OS· Eureka, Nevada· Built 2019· Earth· 220 ft tall
Significant Hazard Tailings Private

Key Takeaway

Mill 5/6 East Tailings Storage Facility is classified as significant hazard in Nevada. It was completed in 2019 and is 7 years old. Its primary use is tailings. Significant hazard means failure could cause economic or environmental damage. Learn more.

Physical Details

Dam Height 220 ft (taller than 98.4% in NV)
Dam Length20,022 ft
Dam TypeEarth
Max Storage67.5K acre-ft
Normal Storage27.9K acre-ft
Surface Area410 acres
Drainage Area1 sq mi
Max Discharge0 cfs
Year Completed2019 (7 years old)
NID IDNV10808

Safety Information

Significant Hazard

No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities.

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

Emergency Action Plan: Yes
Last Inspection: October 6, 2022
State Regulated: Yes
Regulatory Agency: NEVADA DWR

Ownership

NEVADA GOLD MINES LLC

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Mill 5/6 East Tailings Storage Facility?

Mill 5/6 East Tailings Storage Facility is classified as Significant Hazard. No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.

Who owns and operates Mill 5/6 East Tailings Storage Facility?

Mill 5/6 East Tailings Storage Facility is owned by NEVADA GOLD MINES LLC (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Mill 5/6 East Tailings Storage Facility built?

Mill 5/6 East Tailings Storage Facility was completed in 2019, making it 7 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 Mill 5/6 East Tailings Storage Facility?

Mill 5/6 East Tailings Storage Facility 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 Mill 5/6 East Tailings Storage Facility?

Mill 5/6 East Tailings Storage Facility has a dam height of 220 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 Mill 5/6 East Tailings Storage Facility last inspected?

Mill 5/6 East Tailings Storage Facility was last inspected on October 6, 2022. 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.