Jeff Phillips

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Wildfire, morphologic change and bed material transport at Fishtrap Creek, British Columbia

Geomorphology, 2010

In 2003, a wildfire burned nearly two-thirds of the Fishtrap Creek watershed, including the fores... more In 2003, a wildfire burned nearly two-thirds of the Fishtrap Creek watershed, including the forested floodplain. Annually repeated surveys of the stream channel — combined with bed material tracer studies in 2006 and 2007 — indicate that the channel has become unstable and that the bed material transport dynamics have changed since the fire. Using these data, the morphologic changes

Post-fire dynamics of a gravel bed stream : Fishtrap Creek, British Columbia

In August 2003, the McLure Fire burned through several watersheds north of Kamloops, including Fi... more In August 2003, the McLure Fire burned through several watersheds north of Kamloops, including Fishtrap Creek. The burn was extensive, killing almost all the trees in the riparian area. Given our current knowledge, it is not possible to accurately predict channel response to wildfire, the rate of change, or the time scale at which response and recovery may be expected to occur. The purpose of this study is to document the timing and magnitude of initial changes in channel morphology, peak flows, sediment supply, and sediment mobility in Fishtrap Creek in the aftermath of the McLure Fire. We take an empirical approach that combines stream channel

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Dynamics of a gravel bed stream in transition: Fishtrap Creek, British Columbia

In August 2003, a forest fire burnt the entire floodplain and most of the contributing drainage b... more In August 2003, a forest fire burnt the entire floodplain and most of the contributing drainage basin of Fishtrap Creek, British Columbia. The riparian vegetation, which consisted primarily of mature cottonwoods and redcedar trees, suffered nearly 100% mortality due to the fire: none of the dead trees have since been removed, following the fire. The post-fire riparian vegetation comprises various herbaceous species, as well as some small shrubs and trees. The UBC regime model predicts that such a change in bank vegetation will result in an eventual transition from a narrow, stable, single thread stream channel to an unstable, multiple- thread channel about twice as wide as the original. During the snowmelt freshet of 2006, the first signs of significant channel change were documented in the field. We use three years of repeated cross sectional surveys and low level aerial photography from before and after the freshet to characterize the changes in channel geometry. We also documente...

Jeff Phillips

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