Virgil Larson
Key Takeaway
Virgil Larson is classified as low hazard in Montana. It was completed in 1977 and is 49 years old. Its primary use is irrigation.
Physical Details
| Dam Height | 16 ft (taller than 31.7% in MT) |
| Dam Length | 800 ft |
| Dam Type | Earth |
| Max Storage | 210 acre-ft |
| Normal Storage | 75 acre-ft |
| Surface Area | 18 acres |
| Drainage Area | 2 sq mi |
| Max Discharge | 1,500 cfs |
| Year Completed | 1977 (49 years old) |
| NID ID | MT01589 |
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
VIRGIL D LARSON
Private
Nearby Dams
Rattlesnake #2
Wibaux, MT
Low Hazard 15 ftJ Witkowski #1
Wibaux, MT
Low Hazard 21 ftStark Dam
Fallon, MT
Low Hazard 20 ftKeirle #3
Fallon, MT
Low Hazard 15 ftWyrick
Fallon, MT
Low Hazard 22 ftKeirle
Fallon, MT
Low Hazard 15 ftLamesteer Dam
Wibaux, MT
Low Hazard 22 ftLeo #2
Fallon, MT
Low Hazard 20 ftFrequently Asked Questions
What is the hazard classification of Virgil Larson?
Virgil Larson 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 Virgil Larson?
Virgil Larson is owned by VIRGIL D LARSON (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Virgil Larson built?
Virgil Larson was completed in 1977, making it 49 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 Virgil Larson?
Virgil Larson 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 Virgil Larson?
Virgil Larson has a dam height of 16 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.