Translations:Einzugsgebiet/5/en

The runoff generation determines the effective precipitation from the rainfall. From this, the components surface runoff, infiltration, evaporation and interflow are derived. A snow calculation is performed at temperatures below zero °C and is based on the Snow-Compaction-Method. Regarding the algorithms of the method, reference is made to the relevant literature. The natural process from precipitation to runoff is divided into individual phases for the mathematical simulation. In the runoff generation phase, the precipitation (system load) is divided into the "effective precipitation" directly reaching the runoff, and the losses not affecting the runoff (moistening, trough, evaporation and infiltration losses). Therefore, this phase is also called load distribution. The resulting mathematical equation for the momentary load distribution is written as follows: