5-A comparative analysis of hydrological and diffusion methods of flood routing.

Abstract

As a part of the study of flood routing methods as applicable to Indian rivers, an attempt was made to apply the Conventional Muskingum method, the Constant and Variable Parameter Muskingum Cunge methods, the Kulandaiswamy General Storage Equation method and the Variable Parameter Diffusion method to a reach each in the Rivers Narmada and Cauvery. A total of ten floods in Narmada and eight in Cauvery were analysed. The three Muskingum methods produced very similar results with which the general storage equation method also agreed. Any improvement in one or other method was only marginal. It was found that the diffusion method can also be applied with improved results. However, one experiences considerable difficulty in the model parameter calculations of all the methods.