Marine Dam

TR-LITTLE BITTERROOT RIVER· Lake, Montana· Built 1970· Earth· 15 ft tall

Key Takeaway

Marine Dam is classified as low hazard in Montana. It was completed in 1970 and is 56 years old. Its primary use is fire protection.

Physical Details

Dam Height 15 ft (taller than 18.8% in MT)
Dam Length600 ft
Dam TypeEarth
Max Storage387 acre-ft
Normal Storage198 acre-ft
Year Completed1970 (56 years old)
NID IDMT03694

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

DENNIS D. MCDONALD

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Marine Dam?

Marine 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 Marine Dam?

Marine Dam is owned by DENNIS D. MCDONALD (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Marine Dam built?

Marine Dam was completed in 1970, making it 56 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 Marine Dam?

Marine Dam serves the following purposes: Fire Protection, Stock, Or Small Fish Pond. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is Marine Dam?

Marine Dam has a dam height of 15 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.