Rock Creek Lake
Key Takeaway
Rock Creek Lake is classified as significant hazard in Montana. It was completed in 1960 and is 66 years old. Its primary use is water supply. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 30 ft (taller than 82.7% in MT) |
| Dam Length | 320 ft |
| Dam Type | Earth |
| Max Storage | 2.6K acre-ft |
| Normal Storage | 1.5K acre-ft |
| Year Completed | 1960 (66 years old) |
| NID ID | MT03747 |
Safety Information
No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
FRANKLIN INC
Private
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Low Hazard 10 ftFrequently Asked Questions
What is the hazard classification of Rock Creek Lake?
Rock Creek Lake is classified as Significant Hazard. No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Rock Creek Lake?
Rock Creek Lake is owned by FRANKLIN INC (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Rock Creek Lake built?
Rock Creek Lake was completed in 1960, making it 66 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 Rock Creek Lake?
Rock Creek 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 Rock Creek Lake?
Rock Creek Lake has a dam height of 30 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.