The impact of spring breakup ice on stream channel morphology in northern New England By Jaime Craig
Distribution of Distribution of historic ice jam events in New England
Difficulty in studying ice breakup Hydrometric gauging stations are useless under icy conditions Water height isn’t a good representation of stream activity
Significance of river ice formation
Ice jam formation
Effect on sediment erosion Increase in turbidity Discharge during ice breakup is two to five times greater discharge during the open-water period. (Prowse, 1993) Increase to 291 mg/L (at 2,280 m 3 /sec) just before breakup and to a peak of 331 mg/L (2,480 m 3/ sec) during the final ice run. (Milburn and Prowse, 2000) Ice scouring
Andrew M. Tuthill, U.S. Army Corps of Engineers Ice scouring
Tunbridge, VT, March 1999
Bridge collapse
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