The catchment areas can be modelled in any detail using land elevation curves, soil characteristics, land cultivation, drainage characteristics etc. It distinguishes between various rainfall run-off processes such as surface run-off, sub-soil drainage and storage in saturated and unsaturated areas, taking crop evaporation and capillary rise into account.
The SOBEK RR module uses separate storm events or long time series of meteorological data for statistical analysis. You can input your own rainfall patterns or use historical data and model any number of rainfall gauges taking the spatial variation into account. It can model both flood events and dry spells.