Parameters

Weight scale (w)

Range

Rating (r)

Index scale (r * w)

Depth to the water table (m)

5

0 - 1.5

10

50

1.5 - 4.5

9

45

4.5 - 9.1

7

35

9.1 - 15.2

5

25

15.2 - 22.9

3

15

22.9 - 30.5

2

10

>30.5

1

5

Net Recharge of aquifer (mm/year)

4

0 - 50.8

1

4

50.8 - 101.6

3

12

101.6 - 177.8

6

24

177.8 - 254.0

8

32

>254.0

9

36