把古洪水加入到洪水系列后进行频率计算，可以看出频率曲线基本合理，说明对1482年洪水重现期的判断是合理的。
It can be seen that the frequency curve calculation is basically reasonable and show the estimation of "1482 flood" return period is rational after putting palaeofloods into flood series.
洪水频率(或重现期)是指一定时期内某种洪水出现的机率。
Flood frequency (return period) is referring to recurrence probability of flood in certain period.
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