Abstract
A long term simulation for a sewer network by dynamic flow routing models is very time consuming. The alternative hydrological methods (e.g. unit hydrographs) hâve the disadvantage that they are unable to simulate backwater conditions which may significantly effect the flow hydrograph. As one possible solution this paper présents a simulation concept which includes hydrological components to model the effects of backwatei or overtopping Street level. However, each model component requîtes a calibration on dynamic routing results because the investigations showed that each sewer System reacts very individually at backwater conditions. This new concept was developed and verified at eight sewer Systems.
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