Even the river in Taiwan with the highest scouring volume, the Chuoshui River, generates no more than eight million cubic meters a year. One naphtha cracker thus requires complete extraction of the sand from the rivers for over a decade; and this extraction will naturally affect the downstream areas.
台灣沖刷量最高的濁水溪，一年也不過八百萬立方公尺，填一個六輕，等於一次掏空十幾年的河川沖沙，沙掏空了，下游當然受影響。