Case studies | % vegetated | % infiltration | % runoff | Evapo-transpiration |
Natural condition | natural | 50 | 10 | 10 |
Modified | modified | 6 | 50 | |
Northwest England | 66 | 1 | 32 | 1 |
20 | 4 | 74 | 2 | |
California, Thompson creek | natural | 50 (25 shallow + 25 deep) | 10 | 40 |
80 - 90 | 42 (21 + 21) | 20 | 38 | |
50 - 65 | 35 (20 + 15) | 30 | 35 | |
0 - 50 | 15 (10 + 5) | 55 | 30 | |
Harzliya, Israel | 30 - 40 (residential | 45 | ||
60 - 75 (industrial) | 90 | |||
Vegetated cover in low density areas | 66 | 32 | ||
Very less vegetated town centre’s | 20 | 74 |