Slope

0˚ - 5˚

Nil

1

35

30

30

25

5 - 10

Low

1

10 - 15

Moderate

2

15 - 25

High

3

>25˚

Very high

5

Lythology

Acid and intermedaite plutonic rock masses

Low

1

20

20

20

20

Basic and ultrabasic plutonic rocks

Low

1

Rhyolite, microgranits/ dacite, meta andesite

Moderate

2

Basic volcanic rocks

High

2

Volcanosedimentary and sedimentary rocks

high

4

Fracturation

Very dense

Very high

5

30

35

25

30

Dense

High

4

Moderate

Moderate

3

Low

Low

2

Very low

Nil

1

Hydrographic Network

0 - 25

Very high

5

0

0

15

15

25 - 50

High

4

50 - 100

Moderate

2

100 - 200

Low

1

>200

Nil

1

Land use

Water expanse

Low

1

15

15

10

10

Dense vegetation

Low

1

Dense vegetation

Low to nil

1

Agricultural land

Moderate

2

Building and bare sol

High

4