중류와 하류에 비교적 넓은 충적 평야가 발달하며 하구 일대에 석호가 형성되어 있었으나 현재는 거의 매립되어 시가지로 변화하였다.
Relatively wide alluvial plains were developed in the middle and lower streams, and lagoons were formed in the estuary area, but now they are almost reclaimed and turned into an urban district.