CGRG Bibliography of Canadian Geomorphology
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Author : Boultbee, N.; Nicol, D.; Jordan, P.; and Boyer, D.
Date : 2002.
Title : Coffee Creek landslides and flood event of November 1999.
Publication : Terrain Stability and Forest Management in the Interior of British Columbia: Workshop Proceedings. May 23-25, 2001 Nelson, British Columbia, Canada. Edited by: Jordan, P.; and Orban, J. British Columbia Ministry of Forests Forest Sciences. Technical Report
Issue : 003:
Page(s) : 215.
Abstract
On November 11 and 12, 1999, an unusual rainstorm caused flooding and landslides in several areas of the Kootenay region of British Columbia. The area most affected was the Coffee Creek drainage near Balfour, on Kootenay Lake, where serious damage occurred to Highway 31. Several landslides occurred in the watershed, and the forest service road along the creek was washed out at many locations. The relative importance of natural processes, and landslides and erosion caused by forest development, is an issue that is always raised whenever a damaging hydrologic event occurs. In Coffee Creek, a large landslide in an old cutblock was caused by the rainstorm, and a large natural debris flow occurred in an undeveloped area nearby. Both events added large quantities of sediment to the creek channel, and downstream from these slides, the channel experienced severe bank erosion and aggradation. Severe fall rainstorms are very unusual in the Kootenays, where almost all peak flows as well as landslide and erosion events, occur during spring snowmelt.
Bibliography of Canadian Geomorphology