Water
Drainage density (km of channels per km2 )
| Coarse <5 km | Medium 5-10 km | Fine 10-20 km | Very fine >20 km |
| 1.0 | 1.3 | 1.7 | 2.0 |
Flooding frequency
| Νοne | very rare (once/10 years) | Rare (once/6-10 years) | Infrequent (once/3-5 years) | Frequent (once/1-2 years) | Other |
| 1.0 | 1.2 | 1.5 | 1.7 | 2.0 |
Impervious surface area (ha /10 km2 of territorial surface/10 years )
| Low <10 ha | Moderate 10-25 ha | High 26-50 ha | Very high >50 ha |
| 1.0 | 1.3 | 1.7 | 2.0 |
