How does a snow fence work?
Snow fences force wind to go around and through the fence, causing the wind to lose energy and speed. The snow particles suspended in the fast-moving air come to rest as the speed slows. This forms a drift behind or in front of the snow fence. The height of the fence and amount of snowfall common to the area, determines how much snow a fence can trap.
A snow fence is a structure to create snowdrifts in specific areas and to minimize snowdrifts on roads. Farmers use snow fences to collect snow in low areas to have a god water supply in the spring.
Temporary snow fences are usually made out of orange plastic which is attached to stakes. Permanent snow fences are made out of wood and heavier poles and are placed along roads with predictable snow and wind patterns. As the wind blows the snow settles along the fence preventing it to flow over.