A DEM, before it can be used for watershed delineation, often needs to be reconditioned and pre-processed by “filling” any depressions or sinks (an area lower than its surroundings) to…
A DEM, before it can be used for watershed delineation, often needs to be reconditioned and pre-processed by “filling” any depressions or sinks (an area lower than its surroundings) to…
Note: in the new QGIS version 3.2X, the SAGA Upslope Area tool used for watershed delineation in this instruction may not work properly (discussions on Github). An easy way to…