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St. Clair River Ice Jam Dynamics and Possible Effect on Bed Changes

Author(s): Tomasz Kolerski; Hung Tao Shen

Linked Author(s): Tomasz Kolerski, Hung Tao Shen

Keywords: No Keywords

Abstract: This paper presents a numerical model study on the dynamics of the record ice jam of 1984 in the St. Clair River and its possible effect on river bed changes and conveyance. Simulations using the river ice dynamic model DynaRICE were made to examine the flow and bed shear stress during the jam formation and release periods. Simulation results indicate that the ice jam in the river did not cause a significant increase in bed shear stress compared to pre- and post-jam open water conditions. This implies that the jam may not have had a significant impact on the channel conveyance. The insignificant change in bed shear stress during the ice jam period is considered to be the result of the limited jam thickness and the backwater effect of the jam due to the constrained level difference between Lake Huron and Lake St. Clair, as well as the large depth of river flow relative to the jam thickness.

DOI:

Year: 2010

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