Journal article

Debris-flow-dominated sediment transport through a channel network after wildfire

Petter Nyman, Walter AC Box, Justin C Stout, Gary J Sheridan, Saskia D Keesstra, Patrick NJ Lane, Christoph Langhans



Field studies that investigate sediment transport between debris-flow-producing headwaters and rivers are uncommon, particularly in forested settings, where debris flows are infrequent and opportunities for collecting data are limited. This study quantifies the volume and composition of sediment deposited in the arterial channel network of a 14-km2 catchment (Washington Creek) that connects small, burned and debris-flow-producing headwaters (<1 km2) with the Ovens River in SE Australia. We construct a sediment budget by combining new data on deposition with a sediment delivery model for post-fire debris flows. Data on deposits were plotted alongside the slope–area curve to examine links betw..

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Awarded by Australian Research Council

Funding Acknowledgements

Funding received from the Australian Research Council (LP150100654), the Melbourne Water Corporation and the Department of Environment, Land, Water and Planning (DELWP). Reviewers of earlier versions of the paper provided very valuable suggestions for improvement. Philip Noske, Glenn Dunshea and Nuosha Zhang helped with field work. Data from this study can be made available on request. The authors have no conflict of interest to declare.