Marsh Lake

Cataract Creek· Madison, Montana· Built 1956· Earth· 8 ft tall
Low Hazard Irrigation Private

Key Takeaway

Marsh Lake is classified as low hazard in Montana. It was completed in 1956 and is 70 years old. Its primary use is irrigation.

Physical Details

Dam Height 8 ft (taller than 0.5% in MT)
Dam Length314 ft
Dam TypeEarth
Max Storage68 acre-ft
Normal Storage17 acre-ft
Surface Area0 acres
Drainage Area0 sq mi
Max Discharge54 cfs
Year Completed1956 (70 years old)
NID IDMT01272

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: No

Ownership

Larry G Young

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Marsh Lake?

Marsh Lake 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 Marsh Lake?

Marsh Lake is owned by Larry G Young (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Marsh Lake built?

Marsh Lake was completed in 1956, making it 70 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 Marsh Lake?

Marsh Lake 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 Marsh Lake?

Marsh Lake has a dam height of 8 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.