J.L. Big Reservoir
Key Takeaway
J.L. Big Reservoir is classified as low hazard in Montana. Its primary use is irrigation.
Physical Details
| Dam Height | 24 ft (taller than 67.5% in MT) |
| Dam Type | Earth |
| Max Storage | 342 acre-ft |
| Normal Storage | 342 acre-ft |
| Surface Area | 59 acres |
| NID ID | MT03849 |
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
DUNCAN RANCH COMPANY
Private
Nearby Dams
Frequently Asked Questions
What is the hazard classification of J.L. Big Reservoir?
J.L. Big 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 J.L. Big Reservoir?
J.L. Big Reservoir is owned by DUNCAN RANCH COMPANY (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
What is the primary purpose of J.L. Big Reservoir?
J.L. Big Reservoir 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 J.L. Big Reservoir?
J.L. Big Reservoir has a dam height of 24 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.