RTOPO Hydrology, Simulating rainwater runoff

RTOPO is a CAD software for topography, editing XYZ files, triangulation, contour lines, sections and simulation of rainwater flow.
You can identify the watershed, the direction and meaning of the water flow, the flooded areas, the speed and level of the water.
You can set: the amounts of precipitation and infiltration into the soil, the roughness of the land, the calculation time increment, the duration of the precipitation, the total duration greater than or equal to the duration of the precipitation and drawing the water level at every moment.
https://rcad.eu/rtopo/
See also https://rumble.com/v3v3xdg-rtopo-hydrology-cad-for-topography-editing-xyz-point-files.html