Greystone Tails Dam

COOKS CREEK-TR· Lander, Nevada· Built 1954· Earth· 111 ft tall
Low Hazard Tailings Private

Key Takeaway

Greystone Tails Dam is classified as low hazard in Nevada. It was completed in 1954 and is 72 years old. Its primary use is tailings.

Physical Details

Dam Height 111 ft (taller than 93.8% in NV)
Dam Length1,010 ft
Dam TypeEarth
Max Storage906 acre-ft
Normal Storage600 acre-ft
Surface Area25 acres
Drainage Area0 sq mi
Max Discharge5 cfs
Year Completed1954 (72 years old)
NID IDNV10620

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 5, 2019
State Regulated: Yes
Regulatory Agency: NEVADA DWR

Ownership

M-I LLC

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Greystone Tails Dam?

Greystone Tails 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 Greystone Tails Dam?

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

When was Greystone Tails Dam built?

Greystone Tails Dam was completed in 1954, making it 72 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 Greystone Tails Dam?

Greystone Tails 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 Greystone Tails Dam?

Greystone Tails Dam has a dam height of 111 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 Greystone Tails Dam last inspected?

Greystone Tails Dam was last inspected on June 5, 2019. 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.