Hi Nicolas,
If you don't get a reply here that solves your issue it may be worth
asking on the GRASS mailing list. I know GRASS has a lot of hydrographic
tools and it's integrated into QGIS so...
https://lists.osgeo.org/mailman/listinfo/grass-user
Jonathan
On 2019-01-25 06:52, Nicolas Cadieux wrote:
Hi,
I know it can't be that simple but I would like to model a river flood
in a mountainous area. I am looking for something like the Saga Lake
flood module with a LiDAR derived DEM, a seed but with the possibility
to add X amount of water. It's basically a lake and dam scenario and
you just add water and figure out where the water goes down the valley
when it goes over the dam. Of course I can't use the normal lake
flood modules because rivers are not flat therefore I need something
that takes the downhill valley shape into consideration. Also, I am
not looking for a simple channel network map with lines and points. I
would like the actual polygon or raster representation of the 2D shape
of the river channel. Can you please point me in the right direction.
Nicolas
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