暴雨徑流是複杂的自然現象,它与人类的經济活动有密切的关系。生产愈发展就愈要求能够精确地掌握徑流形成和运动的規律,以便利用来为生产服务。小流域数量多,分布广,一般都缺少系統的水文測騐資料,加上小汇水面积徑流的形成和运动往往具有此較迅速和猛烈的特点,因此小汇水面积暴雨徑流的研究自然而然地成为一个独特的課題。 Rainstorm runoff is a complex natural phenomenon, which is closely related to human economic activities. The more advanced the production, the more it requires the accurate understanding of the law of runoff formation and movement so that it can be used to serve production. Small watersheds are widely distributed and generally lack systematic hydrological test data, and the formation and movement of small catchment runoff often have such rapid and violent characteristics. Therefore, the study of stormwater runoff in small catchment areas naturally Become a unique topic.