| Erosion category | Existing ha | Existing % | 5% increase ha | 5% increase % | 10% increase ha | 10% increase % |
| Moderate | 12,525 | 56.4 | 11,528 | 51.9 | 10,757 | 48.5 |
| High | 9479 | 42.7 | 9872 | 44.5 | 10,644 | 47.9 |
| Severe | 194 | 0.9 | 798 | 3.6 | 798 | 3.6 |