ABSTRACT
ABSTRACT: This paper gives anoverviewabout today’smathematicalmodelling instruments of the hydrological processes participating at the formation of flood in urban environments. They are divided into hydrological and hydraulic models. While the first group of models addresses the flow processes in the catchment, the second group simulates the transport processes of runoff in channels and rivers. The overall trend in rainfall-runoff modelling is directed towards more refined physically based modelling. The lumped and distributed models are more and more approaching each other. For the flood routing in rivers hydraulic methods are nowadays dominating compared to hydrological approaches. 1-dimensional flow models are still the preferred hydraulic modeling tools but due to better availability of topographic data by remote-sensing technique and more robust numerical methods 2-dimensional models are advancing.
