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 |