Analysis of suspended solids discharge in the Kako River basin during flood events by using water quality model incorporated with soil erosion process

Koike, Taichi*; Ikenoue, Tsubasa; Koga, Yutaro*; Matsuo, Tomohito*; Shimadera, Hikari*

no journal, , 

Accurate estimation of nutrient load from land is necessary for nutrient management in the enclosed coastal sea of Harimanada with oligotrophication problem. We aim to accurately estimate the nutrient load including the rapid increase during flood events in the Kako River basin, which has the largest basin area among the rivers flowing into the Harimanada. In this study, we estimated suspended solid (SS) load during flood events using a water quality model incorporated with the soil erosion process and evaluated its accuracy. As a result, although there is room for improvement in the height of the peak and the timing, the increase in SS load during Flood Events was generally reproduced.