Pfaff Irrigation
Key Takeaway
Pfaff Irrigation is classified as significant hazard in Montana. It was completed in 1957 and is 69 years old. Its primary use is irrigation. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 28 ft (taller than 80.9% in MT) |
| Dam Length | 500 ft |
| Dam Type | Earth |
| Max Storage | 284 acre-ft |
| Normal Storage | 138 acre-ft |
| Drainage Area | 11 sq mi |
| Max Discharge | 600 cfs |
| Year Completed | 1957 (69 years old) |
| NID ID | MT00346 |
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
PFAFF RANCH INC
Private
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Pfaff Irrigation?
Pfaff Irrigation 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 Pfaff Irrigation?
Pfaff Irrigation is owned by PFAFF RANCH INC (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Pfaff Irrigation built?
Pfaff Irrigation was completed in 1957, making it 69 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 Pfaff Irrigation?
Pfaff Irrigation 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 Pfaff Irrigation?
Pfaff Irrigation has a dam height of 28 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.