[Qgis-user] Calculating affected regions of high-water situations

[Andreas Neumann]

Hi all,

I am looking for tools for calculating the affected regions when a river
level rises 1, 2 or 3m. I have DTM data (2m resolution) and cadastral
data with the areas of the flowing water bodies at hand.

Are there any tools that can help me get the affected raster cells in
the DTM if the river level rises? With a lake, it would be a bit easier,
but the river also has a slope ...

I am ok with any OS GIS solutions (GRASS, QGIS, Taudem or Saga, etc.).

Thank you if you have any pointers.

Andreas