Because of the large influx of population, the floodways and flowage areas have gradually become occupied with both legal and illegal construction.
由於人口大量湧入，在可開發、可建屋的地方都開了，建了之後，人就逐漸佔用水的地盤﹘ ﹘有透過變更都市計畫、合法蓋屋的，也有非法違建的。