Abstract: Based on the hydrodynamic features of river networks in plains,a hydrodynamic model for the river network in Changzhou was set up with the aid of MIKE11 modeling system,and its parameters were calibrated and validated with the hydrological data monitored in 1997,1999 and 2009.It was found that with the river bed roughness varying in the range of 0.020-0.035,the calculated results agree well with the measured data,properly reflecting the major hydrodynamic feature of the river networks.

Key words: rivers network, hydrodynamic model, model calibration, MIKE11, Changzhou