While working on several dozen heavy rainfall projects, I was dissatisfied as the lead engineer and project manager with the available tools: Flow path analyses, based on classic GIS tools, have numerous methodological limitations and no longer meet the requirements for modern analyses. Hydrodynamic models, on the other hand, require numerous input data, careful model setup with regard to model stability in explicit calculation methods, and a lot of time until results are available.
This led to the desire for software that determines the essential runoff paths and terrain depressions without complicated model setup. Not as a lengthy hydrodynamic simulation, but as a quick analysis that can generate essential statements much better than existing purely GIS-based approaches.
During the lockdown of the Corona crisis in spring 2020, the opportunity arose to refresh my programming skills, and thus I decided to implement an analysis tool based on Python and other modern programming libraries.