DEPTH TO WATER TABLE (meter)

TOPOGRAPHY (slope %)

Range (meter)

Rating

Weight

Range (%)

Rating

Weight

0 - 1.5

10

5

0 - 2

10

1

1.5 - 4.5

9

3 - 6

9

4.5 - 9

7

7 - 12

5

9 - 15

5

13 - 18

3

15 - 23

3

>18

1

23 - 30

2

IMPACT OF VADOSE ZONE

>30

1

Range

Rating

Weight

NET RECHARGE (millimeter∙year−1)

Sandy clays

3

5

Range (millimeter∙year−1)

Rating

Weight

Metamorphic rock Sandstone, Clay

4

0 - 50

1

4

Armours and Gravel

5

50 - 100

3

Ferruginous sandstone and coarse sands bitumen

6

100 - 180

6

Clayey Sand

7

AQUIFER MEDIA

Sand and Gravel

8

Range

Rating

Weight

coarse sands

9

Sand and Gravel

8

3

HYDRAULIC CONDUCTIVITY (meter∙day−1)

Clayey Sands

4

Range (meter∙day−1)

Rating

Weight

SOIL MEDIA

<4

1

3

4 - 12

2

Range

Rating

Weight

12 - 29

4

Sands (10% to 45% of Clay)

7

2

29 - 41

6

Organic matter (peats)

8

41 - 82

8

Sands (0% to 8% of Clay)

9

>82

10