Flood Runoff Analysis in the Upper Chang Jiang Basin

Abstract

Channel network with 1km mesh is developed for the Upper Chang Jiang Basin of 760, 000km² by using DEM and GLOBE. Arrangement of the network to one dimensional array enables runoff computation for the large area with the small mesh. The runoff analysis with kinematic wave approximation and input data from ISLSCP on rainfall and evapotranspiration gives appropriate discharge hydrograph at Yichang.