Black Sea Reservoir

TR-WEST BLACKTAIL CREEK· Rosebud, Montana· Built 1950· Earth· 28 ft tall

Key Takeaway

Black Sea Reservoir is classified as low hazard in Montana. It was completed in 1950 and is 76 years old. Its primary use is fire protection.

Physical Details

Dam Height 28 ft (taller than 80.9% in MT)
Dam Length350 ft
Dam TypeEarth
Max Storage1.1K acre-ft
Normal Storage748 acre-ft
Year Completed1950 (76 years old)
NID IDMT00546

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

BIG TIMBER LIVESTOCK CO

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Black Sea Reservoir?

Black Sea Reservoir 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 Black Sea Reservoir?

Black Sea Reservoir is owned by BIG TIMBER LIVESTOCK CO (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Black Sea Reservoir built?

Black Sea Reservoir was completed in 1950, making it 76 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 Black Sea Reservoir?

Black Sea Reservoir 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 Black Sea Reservoir?

Black Sea Reservoir has a dam height of 28 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.