Ice Flow/Jam Footage

This is the second of two videos capturing the March 6, 2011 Wild Ammonoosuc RIver Ice Flow in Woodsville, NH. This video takes place at the intersection of route 112 with rt 302. This footage captures the ice flow transitioning from dynamic, mass movement of ice to a static, mass jam. This jam is due to the constriction of two bridges crossing the river channel. Eventually the river undermines the ice jam due to the hydraulic head upstream of the ice jam.