一、洪水分类黄河洪水按其成因可分为冰凌洪水和暴雨洪水两大类。冰凌洪水是由河道内冰凌消融卡冰壅水所引起,它只发生在局部河段,其发生时间是冬末春初。暴雨洪水是由暴雨所产生,全流域皆可出现,其出现时间是夏秋两季。 First, the flood classification According to the causes of the Yellow River flood can be divided into ice flood and storm flood two categories. Ice flood is caused by icy ice melt ice in the river, which only occurs in the local river section. Its occurrence time is late winter and early spring. Storm floods are generated by heavy rains, the whole basin can occur, its occurrence time is summer and autumn.