He estimates that in July 2004 during the flooding from Typhoon Mindulle, in less than one week the topmost aquifer of the Pingtung Plain saw an increase of more than 600 million tons of groundwater. And this water had infiltrated through a natural gravel filter making the quality far superior to that of the surface water.
他估計，去年 72 水災期間，不到一星期，屏東平原第一層含水層就增加了六億多噸的地下水，而且這些水透過礫石的天然過濾，水質遠優於地面水。