The vegetation composition for river restoration requires the introduction of plants which have strong flooding tolerance. A
study of the growth characteristics of river plants according to the period of flooding is essential. Accordingly, this study
measured shoots, leaf number, leaf greenness, dry weight of the plants of Salix species, analyzed their growth rate according
to flooding tolerance and the period of flooding, and contrasted the results with those of a flooding experiment in turbid
water. The results of this experiment showed that Koreensis is the plant which has the strongest flooding tolerance and
flooding in fresh water leads to a much lower risk of the plants being withered than in high turbid water. In addition, the
results showed that the condition of the period of flooding of twenty days and under contributes to more growth and
development of the plants of Salix species than the condition of non-flooding.