| Hydrogeological Unit | Percentage of Rainfall | Size [km²] | Total Groundwater Recharge to Unit in AZB [MCM/a] |
| Basalt | 15 | 760.0 | 21.4 |
| B3 | 0 | 305.5 | 0 |
| A7/2 | 15 | 1570.2 | 48.2 |
| A1/6 | 7.5 | 744.7 | 26.5 |
| Kurnub | 7.5 | 160.0 | 6.4 |
| Zarqa | 0 | 25.3 | 0 |
| Total | 3566 | 102.5 |