The amount of drainage in 1998-1999 was caudated by the equation, the average was 149.4mm, the maximum value was 197.5mm and the minimum was 93.1mm, coefficient variability (CV) was 2.9%.

• 通过上面建立的关系式，计算得到了1998-1999年10个小区的渗漏量，其平均值为149.；4mm，最大值为197