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珠江流域地跨滇、黔、湘、桂、粤五省,集雨面积辽阔,且雨量充沛,雨季长,汛期降雨集中,形成珠江三角洲洪水峰高量大历时长的特点,再加上台风暴潮的袭击,灾害十分严重。解放前,珠江三角洲修建堤围没有完整的规划,一般都是各自为政和孤立分散地进行,堤身矮小单薄,防洪能力低,人民生命财产安全得不到保障。例如1915年西、北两江下游同时出现大
The Pearl River valley across Yunnan, Guizhou, Hunan, Guangxi and Guangdong provinces, the vast catchment area, and abundant rainfall, rainy season, rainfall concentrated in the flood season, the formation of the Pearl River Delta flood peak amount of long calendar period characteristics, coupled with the typhoon storm surge The disasters are very serious. Before the liberation, there was no complete planning for embankment construction in the Pearl River Delta. Generally, all embankments were scattered and separate from one another. The embankments were short and dwarf with low flood control capacity, and people’s lives and property were not protected. For example, in 1915, both the lower reaches of the north and the north of the country appeared large at the same time