Toprail Dam

Intermittent· Valley, Montana· Gravity·
Low Hazard Federal Government

Key Takeaway

Toprail Dam is classified as low hazard in Montana.

Physical Details

Dam Length616 ft
Dam TypeGravity
Max Storage56 acre-ft
Surface Area10 acres
Drainage Area0 sq mi
NID IDMT02773

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: August 16, 2016
State Regulated: No

Ownership

DOI BLM

Federal Government

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Toprail Dam?

Toprail 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 Toprail Dam?

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

When was Toprail Dam last inspected?

Toprail Dam was last inspected on August 16, 2016. 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.