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DynaRICE Modeling to Assess the Effect of the 1984 Ice Jam on Possible Bed Changes in the St. Clair River
- The effect of the record ice jam of 1984 in the St. Clair River on river bed changes and conveyance was investigated using the river ice dynamic model DynaRICE. Simulations were used to examine the flow and bed shear stress during the jam formation and release periods. 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, and therefore the jam may not have had a significant direct impact on the channel conveyance, although an analysis with a coupled ice-sediment model may further clarify whether the jam has caused bed changes. The insignificant change on bed shear stress during the ice jam period is considered to be due to the limited backwater effect of the jam as it is constrained by the level difference between Lake Huron and Lake St. Clair, as well as the large depth of river flow relative to the jam thickness.
- St. Clair River Ice Jam Modelling
- Viewable Data:
- St. Clair River Channel Bathymetry
- DynaRICE Modelling of 1984 Ice Jam Impact on St. Clair River
- Additional Data and Information
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- Supporting Content
- Main Topics
- - St. Clair River
- Questions We Asked
- - Has St. Clair morphology changed since 1962, what initiated it, and when?
- - Has St. Clair conveyance changed, and if so, what were the causes?
- - Remedial measures should not be taken in the St. Clair