Vulnerability Class

Standard DRASTIC

Modified DRASTIC

Index Value

Area (%)

Index Value

Area (%)

Very Low

63 - 100

34

68 - 100

29

Low

>100 - 125

13

>100 - 125

14

Moderate

>125 - 150

48

>125 - 150

47

High

>150 - 191

5

>150 - 196

10