历史洪水 meaning in English

historic flood
historical flood

Study on l - moment estimation method with consideration of historical floods for log - normal distribution
可考虑历史洪水对数正态分布线性矩法的研究
The performance of hec - hms was compared with that of the xinanjiang conceptual model using historical flood data from the wanjiabu catchment in china
分别将hec - hms和新安江模型应用于江西万家埠流域，模拟了历史洪水过程。
The flood detention and storage capacity of several billion cubic meters of hongze lake has been recognized for a long time , but the resistance of fiver - lake string has always been ignored , based on an analysis of historical information about flood events , the harmfulness of plain fiver - lake string was revealed , then , the necessity for implementation of fiver - lake separation in regulation of the huaihe river was verified , and a reasonable scheme for fiver - lake separation and a feasible modeling method for scientific demonstration were also put forward
摘要针对长期以来人们只认知洪泽湖的几十亿立方米防洪调蓄能力，却漠视它的河湖串阻力及其一级尾闾地位的情况，通过对历史洪水和有关资料的分析，初步揭示平原河湖串的危害性，由此引证进一步治理淮河实施河湖分离的必要性，并提出一种合理的河湖分离方案，以及比较可行的模拟论证方法。