Item

Average

Sd^*

RSD^**

(mm)

(mm)

(%)

Weir height

84.5

27.4

32.4

Levee height

196.6

43.6

22.2

Storage capacity

Before mid-summer

43.1

37.1

86.1

After mid summer

58.5

39.9

68.2

Percolation rate

Before mid-summer

12.5

12.5

100.0

After mid summer

20.5

14.6

71.2