| Land cover classes in Bwathonaro Sub-catchment | Area in Km2 | Percentage of the total area (%) |
| Bare ground | 7.31 | 1.11 |
| Closed grassland | 20.682 | 3.15 |
| Closed shrubs | 194.779 | 29.70 |
| Deforested | 2.665 | 0.40 |
| Forest | 35.419 | 5.40 |
| Grassland | 97.284 | 14.83 |
| Indigenous forest | 45.434 | 6.93 |
| Mountain vegetation | 1.633 | 0.25 |
| Open Shrubs with soil | 1.062 | 0.16 |
| Open grassland | 34.599 | 5.28 |
| Open shrubs | 135.066 | 20.60 |
| Plantation forest | 0.791 | 0.12 |
| Riverine trees | 12.154 | 1.85 |
| Rocks | 2.588 | 0.39 |
| Scattered shrubs | 19.171 | 2.92 |
| Shrubs | 15.115 | 2.30 |
| Urban area | 2.583 | 0.39 |
| Very open shrubs | 22.182 | 3.38 |
| Wetland | 5.255 | 0.80 |
| Total area in Km2 | 655.774 | 100 |