Carlton Lake #1
Key Takeaway
Carlton Lake #1 is classified as significant hazard in Montana. It was completed in 1899 and is 127 years old. Its primary use is irrigation. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 22 ft (taller than 63.5% in MT) |
| Dam Length | 420 ft |
| Dam Type | Earth |
| Normal Storage | 450 acre-ft |
| Surface Area | 40 acres |
| Drainage Area | 1 sq mi |
| Year Completed | 1899 (127 years old) |
| NID ID | MT01156 |
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
CARLTON CREEK IRRIGATION
Private
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Carlton Lake #1?
Carlton Lake #1 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 Carlton Lake #1?
Carlton Lake #1 is owned by CARLTON CREEK IRRIGATION (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Carlton Lake #1 built?
Carlton Lake #1 was completed in 1899, making it 127 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 Carlton Lake #1?
Carlton Lake #1 serves the following purposes: Irrigation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Carlton Lake #1?
Carlton Lake #1 has a dam height of 22 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.
When was Carlton Lake #1 last inspected?
Carlton Lake #1 was last inspected on September 25, 2003. Inspection dates indicate when a formal review occurred, not the results of that inspection.