SN

Sub-catchment

Name

Severity Code

Degradation type

Degree of degradation

Relative extent of degradation

Causative factors

Severity Class

Area coverage (%)

1

Upper catchments of Lake Jipe

Wt3.4.f

Loss of top soil through water erosion

Strong

Very frequent

Removal of the natural vegetation

4

15

Wd3.2.f

Terrain definition/mass movement through water erosion

Strong

Common

Removal of the natural vegetation

4

2

Kisangiro catchment; downstream of Ruvu river, Upper Kikuletwa (maasai steppe), Sanya, Kikafu, Weruweru, Karanga catchments

Wt2.3.g

Loss of top soil through water erosion

Moderate

Frequent

Overgrazing

3

24

Wd3.1.g

Terrain definition/mass movement through water erosion

Strong

Light

Overgrazing

3

3

Downstream of Rau, Mue, Himo catchments; Lake Chala catchment; and eastern part of Lake Jipe Catchment

Wt1.4g

Loss of top soil through water erosion

Light

Very frequent

Overgrazing

2

26

4

Mount Meru slopes catchment; Upstream of Upper Kikuletwa, Sanya, Kikafu, Weruweru, Himo, Mue, & Rau catchments

Wt1.2.g

Loss of top soil through water erosion

Light

Common

Overgrazing

1

35

Wd1.2.g

Terrain definition/mass movement through water erosion

Light

Common

Overgrazing

1