Mckay Creek

TR-SIXMILE CREEK· Powell, Montana· Built 1955· Earth· 33 ft tall
High Hazard Irrigation Private

Key Takeaway

Mckay Creek is classified as high hazard in Montana. It was completed in 1955 and is 71 years old. Its primary use is irrigation. High hazard means loss of life is likely if the dam fails — it does not indicate the dam's current condition. Learn more.

Physical Details

Dam Height 33 ft (taller than 91.5% in MT)
Dam Length800 ft
Dam TypeEarth
Max Storage156 acre-ft
Normal Storage131 acre-ft
Surface Area21 acres
Drainage Area0 sq mi
Max Discharge60 cfs
Year Completed1955 (71 years old)
NID IDMT01222

Safety Information

High Hazard

Loss of human life is likely if the dam fails.

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

Emergency Action Plan: Yes
Last Inspection: August 19, 2021
State Regulated: Yes
Regulatory Agency: DNRC

Ownership

PRICE TRUST

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Mckay Creek?

Mckay Creek is classified as High Hazard. Loss of human life is likely if the dam fails. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.

Who owns and operates Mckay Creek?

Mckay Creek is owned by PRICE TRUST (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Mckay Creek built?

Mckay Creek was completed in 1955, making it 71 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 Mckay Creek?

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

How tall is Mckay Creek?

Mckay Creek has a dam height of 33 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 Mckay Creek last inspected?

Mckay Creek was last inspected on August 19, 2021. 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.