Built for coastal risk screening, this model turns a DEM and a land use layer carrying Manning's roughness values into a height-loss cost surface (Berryman 2005: Hloss = 167 n^2 / H0^(1/3) + 5 sin S), then spreads the wave inland from your coastline with GRASS r.cost until it has lost all its height. You get an inundation extent raster holding the wave height left in every cell it reaches, and vector hazard zones (high, moderate, low) with areas in hectares. The README lists published Manning's n values with sources. It is a screening model, not a hydrodynamic simulation: the method is known to underestimate inundation and steep sea walls stop the wave in the model.
Eight Bozmaps QGIS models in one zip: flood, landslide, wildfire, NDVI, NDVI change detection, land surface temperature, OSM map generator and vegetation vulnerability.
Zone of Theoretical Visibility for a proposed wind turbine, mast or tall building, with visible area by distance band and the buildings that can see it.
5, 10 and 15 minute walking catchments along the OpenStreetMap street and path network from any number of points, with building counts per band.