Atlas Dam

MILK RIVER· Valley, Montana· Built 1984· Gravity·
Low Hazard Fish And Wildlife Pond Federal Government

Key Takeaway

Atlas Dam is classified as low hazard in Montana. It was completed in 1984 and is 42 years old. Its primary use is fish and wildlife pond.

Physical Details

Dam Length409 ft
Dam TypeGravity
Max Storage51 acre-ft
Normal Storage51 acre-ft
Surface Area9 acres
Drainage Area2 sq mi
Year Completed1984 (42 years old)
NID IDMT03885

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
Last Inspection: July 14, 2011
State Regulated: No

Ownership

DOI BLM

Federal Government

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Frequently Asked Questions

What is the hazard classification of Atlas Dam?

Atlas 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 Atlas Dam?

Atlas Dam is owned by DOI BLM (Federal Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Atlas Dam built?

Atlas Dam was completed in 1984, making it 42 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 Atlas Dam?

Atlas Dam serves the following purposes: Fish And Wildlife Pond. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

When was Atlas Dam last inspected?

Atlas Dam was last inspected on July 14, 2011. 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.