CGRG Bibliography of Canadian Geomorphology
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Author : Giles, T.R.; Grainger, W.; Skermer, N.; and Turner, K.P.
Date : 2005.
Title : The Stemwinder Creek Mud Flow, an unusual event?
Publication : Landslide Risk Management: Proceedings of the International Conference on Landslide Risk Management, Vancouver. Edited by: Hungr, O.; Fell, R.; Couture, R.; and Eberhardt, E. Leiden: A.A. Balkema.
Issue :
Page(s) : Paper on CD.
Abstract
In parts of the Similkameen River valley, alluvial fans are referred to as relict, suggesting that they are inactive. On August 17th, 2004, a convective rainstorm triggered flow-type landslides near Hedley, British Columbia. Sheetwash was concentrated into rills and gullies on steeper slopes and sediment was rapidly moved into channels. On Stemwinder Creek, a debris flood carved through thick accumulations of matrix-rich talus and transformed into a mud flow. On the alluvial fan, Highway 3 was blocked, property was damaged, and sediment reached the Similkameen River. This event involved several factors, including an intense rainstorm on steep, open grassland, and a large supply of sediment along the channels. The reoccurrence of a similar magnitude event in Stemwinder Creek is dependent on the likelihood of a similarly sized rainfall event. If global warming models that predict more extreme weather patterns are accurate, this must be consid-ered in future landslide risk analysis.
Bibliography of Canadian Geomorphology