| Parameters | Theoretical weights (%) | Effective weights (%) | ||
| Wmin | Wmean | Wmax | ||
| Slope (Sl) | 44 | 29.73 | 37.05 | 40.37 |
| Land-use (Lu) | 27 | 18.24 | 28.42 | 33.03 |
| Soil media (S) | 15 | 10.14 | 12.63 | 13.76 |
| Runoff (R) | 9 | 6.08 | 7.58 | 8.26 |
| Drainage network Density (D) | 5 | 3.38 | 4.21 | 4.59 |