New Water Policy and Practice Volume 1, Number 2 - Spring 2015 | Page 38

Environmental Pollution Potential within the Burl River Basin of Liberia, West Africa

Table 2. Weighted parameters

Weighted parameters

Parameter

Classification

Slope

Flat

2

Gentle

5

Medium

10

Silt

8

Clay

3

Gravel

5

Sand

8

Loam

4

Moderately Dense (<140000)

4

Dense (140000 – 300000)

6

Very Dense ( 300000 – 520000)

8

Extremely Dense ( Above 520000)

10

Trees

5

Bush/Shrubs

5

Trees/Shrubs

4

Farms

10

Bare Areas

1

Soil

Population

Landuse

Weights

37