Script of an Algorithm to Adjust the DEM Derived Stream Slopes in Flat Areas from Terrain Analysis Modeling
|Authors:||Irene Garousi-Nejad David Tarboton|
|Resource type:||Composite Resource|
|Storage:||The size of this resource is 784.0 KB|
|Created:||Nov 30, 2018 at 6:38 p.m.|
|Last updated:|| Nov 30, 2018 at 7:37 p.m.
|Citation:||See how to cite this resource|
This resource includes the code (written in Python 3.6) and the documentation of a technique which is presented for adjusting the slopes of a Digital Elevation Model (DEM) derived drainage network where the slope is zero. The procedure uses the stream river network delineated from the grid-based DEM using Terrain analysis using Digital Elevation Models (TauDEM) software and re-compute the slopes considering the length and slope of all the upstream, downstream, and side entrance reaches. The results of this procedure is that all of the DEM-derived drainage network will have a positive (“downhill”) slope which are constrained to be greater than 0 m/m even when the elevation smoothing process produces equal upstream and downstream elevations on a flow line.
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