Example 4: Flood Plain Maps

[jachym]

In the preparation of flood plain maps, we use both terrain data (e.g. satellite
imagery with necessary terrain information) as well as other additional
information layers. The main task is to process satellite images using
available tools in QGIS or GrassGIS like Raster Terrain analysis.

[jachym]

This is rather task for geology, not remote sensing (or Earth observation). We can only roughly estimate areas around rivers with minimal or no slope from the digital elevation model data (EUDEM).

Based on research from http://proceedings.esri.com/library/userconf/proc15/tech-workshops/tw_385-230.pdf and http://desktop.arcgis.com/en/arcmap/10.3/manage-data/las-dataset/floodplain-modeling-using-lidar-in-arcgis.htm in this project, we should stick to DMT analysis and not to try complex hydrological and hydraulic modeling.

The easiest way could be to integrate GRASS GIS r.hazar.flood module (but integration of GRASS and GeoServer seems rather tricky).

I do not see any "simple" solution to this and suggest, you leave this for later (if ever).