Based on available climatic data in Jianfengling region from 1972 to 1993, the characteristics of intense precipitation and their relationship to typhoons or tropical storms and topography were studied in this paper. First, in Jianfengling region, the rain distribution was uneven through the year, and there are two distinct periods: the rain period and the dry period. The rain period occurs from May to October, and the dry period begins in November and ends in April of the next year. Furthermore, 94 percent...