Using integrated growth to delineate debris-flow inundation

Debris-flow volume is fundamental to mobility, yet many debris flows change as they travel. Growth can occur through diverse processes such channel-bed entrainment, bank failures, aggregation of landslides, and coalescence multiple flows. Integrating growth, either over upslope area or stream length, combines the effects these growth requires specification only zone extent a factor. To delineate potential debris-flow inundation, we implement integrated factors simple volume-area relations in new USGS software package, Grfin Tools. We present two examples forecasting inundation – one using an factor Puerto Rico another channel-length Oregon, USA. The use zones enables scenario-based hazard assessments for geomorphic settings with growth.