APPLICATION OF A MACRO GRID BASED HYDROLOGICAL MODEL TO THE HUAIHE RIVER BASIN IN CHINA

Abstract

A macro scale grid based distributed hydrological model is applied to the Huaihe River basin in China (140, 000km²). In the modeling, a watershed basinis subdivided into grid boxes according to a grid system of a meso-scale atmospheric model to incorporate atmospheric model outputs. Model parameters are determined by using the data sets obtained in the Shigan River basin during the intensive observation period in 1998. Some runoff simulations showed that channel routing has dominant effect on a simulation of river discharge for a large river basin.