How to obtain a Basin and Channel Network from a No-sinks DEM in SAGA GIS and QGIS – Tutorial

A basin is defined as a topographic region in which all water drains to a common area. Identifying basins within a study area can be beneficial for land and water management because priority areas can be defined and the hydrology of the area can be visualized. Delimiting a basin can be done by using Geographic Information Systems such as QGIS and SAGA GIS. To do so, a Digital Elevation Model (DEM) is required since the drainage network is determined by the elevation and slope of the terrain. This tutorial demonstrates how to reproject a DEM raster in QGIS, how to fill the sinks of a DEM, to calculate flow accumulation, to obtain the channel network and the basin limits with SAGA GIS based on the DEM using the Upslope Area interactive tool.

[jairoferrer]

Congratulations very well explained the process.
I would also like to know why you put the number 10, 000, 000. in "Initial Threshold".
Thank you.

[alcatras]

In the Channel Network options: What does the "initial threshold" stands for?

En la sección de Channel Network, ¿Para que sirve el número colocado en "Initial Threshold"?
por que poner 10, 000, 000. Y como se que el número que estoy colocando es correcto.

Thanks!
Muchas gracias!