Past and future hydrological simulations of Chao Phraya river basin

Abstract

(2-11-16, Yayoi, Bunkyo-ku, Tokyo 113-8656) Predictions of variations in global and regional hydrological cycles and their response to changes in climate and the environment are key problems for future human life. Therefore, basin-scale hydrological forecasts, along with predictions regarding future climate change, are needed in areas with high flood potential. This study forecasts hydrological process scenarios in the upper Chao Phraya River basin using a distributed hydrological model (DHM) and precipitation scenarios from three general circulation models modified by the H08 model. First, discharge was simulated by the DHM using the observed rainfall from 2007 to 2009 and then, future discharge scenarios from2010 to 2040 were forecast.