Abstract
A change of water resources in the late 21st century at the Pasak River basin in Thailand is analyzed using a distributed rainfall-runoff model and a rainfall and evapotranspiration output projected by MRI-GCM3.1S. The main findings are as follows: a projected mean annual inflow to the Pasak Dam reservoir for the near future and the late 21st century experiments decrease by 3.8% and 3.5% compared with the present climate experiment; a projected mean monthly inflow using the output of the late 21st century experiment decreases except from July to September; and to maintain a present dam outflow is difficult in the future under a scenario of the same water demand.
