| Wadi | Type of year | Areal Rainfall | Runoff coefficients “n” | Flood flow | Base flow | Total | |
| mm/yr | MCM/yr | MCM/yr | |||||
| Shueib | Dry | 294 | 52.3 | 0.8 | 0.42 | 5.6 | 6.0 |
| Average | 398 | 70.8 | 2.5 | 1.77 | 8.0 | 9.77 | |
| Wet | 502 | 89.4 | 4.6 | 4.11 | 10.4 | 14.5 | |
| Kafrain | Dry | 284 | 53.7 | 0.2 | 0.11 | 8.4 | 8.5 |
| Average | 397 | 75.0 | 1.8 | 1.35 | 12.0 | 13.35 | |
| Wet | 510 | 96.4 | 3.6 | 3.47 | 15.6 | 19.07 | |