Hearst Lake
Key Takeaway
Hearst Lake is classified as low hazard in Montana. It was completed in 1898 and is 128 years old. Its primary use is water supply.
Physical Details
| Dam Height | 9 ft (taller than 2.9% in MT) |
| Dam Length | 300 ft |
| Dam Type | Other |
| Max Storage | 140 acre-ft |
| Normal Storage | 140 acre-ft |
| Year Completed | 1898 (128 years old) |
| NID ID | MT03382 |
Safety Information
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?
Ownership
BUTTE-SILVER BOW
Local Government
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Hearst Lake?
Hearst 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 Hearst Lake?
Hearst Lake is owned by BUTTE-SILVER BOW (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Hearst Lake built?
Hearst Lake was completed in 1898, making it 128 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 Hearst Lake?
Hearst Lake serves the following purposes: Water Supply. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Hearst Lake?
Hearst Lake has a dam height of 9 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.