Study results indicate that hyetograph using Huff method has an undulate shape and the smallest sum of square error, however the peak and the time to peak are not representative.

• 主要成果如后述如：无因次平均法雨型曲线变化较为缓和，以致尖峰降雨时间及尖峰降雨量无法适切模拟；但对于分析同一集水区内不同雨量站之变化与降雨资料的呈现，无因次平均法为一不错的选择。