| Wadi (valley) name | Area (km2) | Total runoff (m3/year) | Surface runoff (m3/year) | Net groundwater recharge (m3/year) | Time to peak Discharge (min) |
| Tayiba | 367.812 | 2,444,935 | 1,342,286 | 1,102,649 | 1501 |
| Matulla | 114.0554795 | 1,325,254 | 822,791 | 502,463 | 1455 |