Mcmullin Bros Upper

TR-TIMBER CREEK· Prairie, Montana· Built 1960· Earth· 30 ft tall
Low Hazard Irrigation Private

Key Takeaway

Mcmullin Bros Upper is classified as low hazard in Montana. It was completed in 1960 and is 66 years old. Its primary use is irrigation.

Physical Details

Dam Height 30 ft (taller than 82.7% in MT)
Dam Length175 ft
Dam TypeEarth
Max Storage152 acre-ft
Normal Storage68 acre-ft
Drainage Area4 sq mi
Max Discharge320 cfs
Year Completed1960 (66 years old)
NID IDMT01351

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
State Regulated: Yes
Regulatory Agency: DNRC

Ownership

MCMULLIN BROS.

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Mcmullin Bros Upper?

Mcmullin Bros Upper 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 Mcmullin Bros Upper?

Mcmullin Bros Upper is owned by MCMULLIN BROS. (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Mcmullin Bros Upper built?

Mcmullin Bros Upper was completed in 1960, making it 66 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 Mcmullin Bros Upper?

Mcmullin Bros Upper 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 Mcmullin Bros Upper?

Mcmullin Bros Upper has a dam height of 30 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.

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.