Class

Range

Area km²

% of the total area

Extremely Low

1 - 20

12.7

4.9

Low

20 - 40

73.1

28.6

Moderate

40 - 60

87

34

High

60 - 80

64

25

Extremely High

80 - 100

19.2

7.5

Total

-

256

100%