Basin wide

The county area

Statistical parameters of surface water resources

Design value of surface water resource quantity

Mean value

Cv

Cs

p = 20%

p = 50%

p = 75%

p = 95%

The upper Minjiang River

Wenchuan

30.94

0.13

0.25

35.08

30.59

27.36

23.27

Lixian

31.81

0.09

0.19

34.74

31.63

29.30

26.26

Maoxian

20.23

0.10

0.21

22.32

20.11

18.45

16.29

Songpan

46.78

0.10

0.20

52.63

46.28

41.72

35.96

Heishui

29.02

0.10

0.19

31.94

28.84

26.52

23.49