CGRG Bibliography of Canadian Geomorphology
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Author : Geertsema, M.; and Menounos, B.
Date : 2006.
Title : Catastrophic failure of a beaver dam at Chudnuslida Lake, east central British Columbia.
Publication : European Geosciences Union General Assembly 2006. Vienna, Austria, April 02-07, 2006. Geophysical Research Abstracts
Issue : 8:
Page(s) : 00917.
Abstract
Beaver dams are common, transitory features along many Canadian streams. These dams can fail suddenly and cause significant downstream flooding. We report on a recent beaver dam failure on Chudnuslida Lake (54° 54’ N; 122° 34’ W) in east central British Columbia. Prior to the event, the level of Chudnuslida Lake was controlled by a beaver dam, but between July and August 2000, a beaver blocked a culvert 100 m downstream and raised the level of the lake by 3 m and caused the dam to fail. Over 2 x 106 m3 of water was released during the event and caused up to 4 m of channel scour over a distance of 4 km. The flood also caused substantial bank erosion and slope failure along the stream channel. Over 80,000 m3of sediment was deposited in bars in the lower, wider portion of the channel, and as a fan into a higher order stream and its floodplain.
Bibliography of Canadian Geomorphology