Green Coulee Dam
Key Takeaway
Green Coulee Dam is classified as low hazard in Montana. It was completed in 1960 and is 66 years old. Its primary use is fire protection.
Physical Details
| Dam Height | 20 ft (taller than 44.5% in MT) |
| Dam Length | 200 ft |
| Dam Type | Earth |
| Max Storage | 78 acre-ft |
| Normal Storage | 48 acre-ft |
| Drainage Area | 4 sq mi |
| Max Discharge | 250 cfs |
| Year Completed | 1960 (66 years old) |
| NID ID | MT02212 |
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
BURGESS RANCH
Private
Nearby Dams
Burgess #1 (Garfield)
Garfield, MT
Low Hazard 20 ftBurgess #2
Garfield, MT
Low Hazard 20 ftTwitchell #1
Garfield, MT
Low Hazard 24 ftCoal Dam
Garfield, MT
Low Hazard 20 ftBurgess Reservoir (Garfield)
Garfield, MT
Low Hazard 30 ftChristmas Dam #1
Garfield, MT
Low Hazard 15 ftTaylor (Garfield)
Garfield, MT
Low Hazard 19 ftClaribell #11 Dam
Garfield, MT
Low HazardFrequently Asked Questions
What is the hazard classification of Green Coulee Dam?
Green Coulee Dam 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 Green Coulee Dam?
Green Coulee Dam is owned by BURGESS RANCH (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Green Coulee Dam built?
Green Coulee Dam 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 Green Coulee Dam?
Green Coulee Dam 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 Green Coulee Dam?
Green Coulee Dam has a dam height of 20 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.