Murnion Dam

SANTO ARROYO CREEK· Garfield, Montana· Earth· 23 ft tall
Low Hazard Irrigation Private

Key Takeaway

Murnion Dam is classified as low hazard in Montana. Its primary use is irrigation.

Physical Details

Dam Height 23 ft (taller than 66.4% in MT)
Dam Length1,090 ft
Dam TypeEarth
Max Storage284 acre-ft
Normal Storage158 acre-ft
Surface Area26 acres
Drainage Area18 sq mi
NID IDMT03962

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

COLIN MURNION

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Murnion Dam?

Murnion 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 Murnion Dam?

Murnion Dam is owned by COLIN MURNION (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

What is the primary purpose of Murnion Dam?

Murnion Dam 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 Murnion Dam?

Murnion Dam has a dam height of 23 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.