中文摘要：

水文方法估算稀遇洪水受到资料短缺的限制，用考古方法——贝丘遗址与稀遇洪水相关方法可以为稀遇洪水的估算提供辅证。郁江河段贝丘遗址群考古有一定的研究基础。研究表明，贝丘遗址的高程可作为稀遇洪水位的参考上限，对此，还通过地貌方法进行了检验。

英文摘要：

To estimate rare flood by hydrology method have been limited in short of the hydrological data. The use of the archaeology method——the relation between shell mound relics and rare flood can furnish supplementary evidence of the rare flood. The archaeological study on the shell mound relics by Yujiang River has certain base already. The paper shows that the altitude of the shell mound relics can be used as the upper limit of the rare flood water level, and this is examined by geomorphological method.