Coarse Sediment Hazard Modeling in the Fort St. James and
Kootenay Lake Regions Deposition of coarse sediment into stream
channels, and onto fluvial fans and deltas is a natural part of
sediment transport processes. Bedload material is essential to
creating aquatic habitat diversity and stabilising stream
channels. However catastrophic events, usually landslides, that
deposit coarse sediment into stream channels often result in at
least temporary destabilisation of the channel itself, and can
sometimes result in long-term changes to a channel. Increases in
coarse sediment inputs may result in: By comparing various
scenarios, we estimate the potential for changes in coarse
sediment inputs between particular management scenarios and
background levels, and between various management options
themselves. Our results identified relative impacts to
watersheds across the study area for each of the management
scenarios ranging from full harvest of mountain pine beetle
killed timber to an idealized state of a landscape