Translations:Einzugsgebiet/22/en

The runoff coefficient of the sealed surfaces (after covering the initial losses) is set at [math]\displaystyle{ \Psi = 1 }[/math]. When determining the sealed surface of a subcatchment area, it must be taken into account that not all paved or sealed surfaces actually drain into a sewer system. The continuous provision of the wetting and trough losses is achieved by continuous balancing of these reservoirs and evaporation.