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TopoFlow-Channels-Diffusive Wave

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Created: Jan 19, 2017 at 4:33 a.m.
Last updated: May 14, 2017 at 3:36 a.m.
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Content types: Model Program Content 
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This process component is part of a spatially-distributed hydrologic model called TopoFlow, but it can now be used as a stand-alone model. It uses the "diffusive wave" method to compute flow velocities for all of the channels in a D8-based river network. This method includes a pressure gradient term that is induced by a water-depth gradient in the downstream direction. This means that instead of using bed slope in Manning's equation or the law of the wall, the water-surface slope is used.

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Peckham, S. (2017). TopoFlow-Channels-Diffusive Wave, HydroShare,

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