Author(s): Robert Gerard
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Keywords: No Keywords
Abstract: A programme of ice jam observations in selected reaches of rivers in Alberta is described. In the first year of operation of this programme, four ice jams were observed in various parts of the province, three of which could be called major. The salient features and effects of these jams are described and summarised, and information is provided on the antecedent meteorological conditions and geomorphic characteristics of the jam sites. The four jams illustrate the ability of ice jams to cause severe perturbations in the natural regime both upstream and downstream of the jam site. After their formation water levels much higher than are reached by summer floods can be generated and, on failure, these high water levels may be propagated downstream accompanied by very high velocities and, possibly, significant scour.
Year: 1975