Author(s)

P. T. Minh Thu, N. Goebel & F. Nestmann

Abstract

Based on the computer CARIMA programme which is developed by SOGREAH (Prof. Cunge, France), the Hydrodynamic-Numerical Model of the River Rhine (HN-Model Rhine) is constructed. It includes 500 km length of the river from Iffezheiq the last weir on the Upper Rhine, to Lobith, the hydrological station at the border between Germany and The Netherlands and the main important tributaries of the section including Neckar, Main, Nahe, Lahn, Moselle, Ahr, Sieg, Ruhr and Lippe. The calibration and verification of the model were carried out with three different types of floods on the River Rhine: The flood of March 1988 occurred on the whole Rhine, The flood of December 1993 occurred on the Lower Rhine and the flood of February 1999 occurred on the Upper Rhine. The results obtain very good agreement between measured water level and computed water level, the computed peak discharges were very good fit with the natural observed once. For simulating the actual and the future situations of the River Rhine with different flood regulation measures, the HN-Model Rhine is able to predict the response of the river to imposed changes. It can give a whole picture of the variation of the water levels effected by these changes and the advices for flood management purpose. Depending on the studies required, the entire model or simply a part of it may be used for different simulations. The HN-Model Rhine has been used for the projects of assessing the effects of dyke displacements and polder systems on The Lower Rhine into flood situation and given many practical results.

Keywords