在临江至楚山的中段，河床有大量冲积土淤积，冬季水浅，有的地方甚至连顺流而下的木筏也无法通过。
Chosan to Linjiang in the middle, a large number of riverbed silt alluvial soil, winter shallow in some areas, and even down under the raft can not be passed.
冲积河流的自我调整作用所遵循的规律，目前在河床演变学中比较常用的是极值假说。
The extreme hypotheses is common law followed the self-adjusting mechanism of alluvial channels in riverbed evolution presently.
在一些强冲积性河流特别是河口区，由于洪水或洪水和潮流共同作用，河床的冲淤变化十分剧烈。
Due to the effect of flood or flood and tidal currents, in some strong alluvial river particular in estuary, the erosion in riverbed is severe.
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