| Parameters | Range | Rate | Parameters | Range | Rate | |
| Depth of water (D) | >30.4 m | 1 | Topography (T) | 0% - 2% | 10 | |
| 2% - 6% | 8 | |||||
| 6% - 10% | 5 | |||||
| 10% - 18% | 2 | |||||
| >18% | 1 | |||||
| Impact of Vadose Zone (I) | Wad fills: soil over bed rock | 2 | ||||
| Shuaib/Azab | 3 | |||||
| Net Recharge (R) | 0-50 mm/day | 1 | ||||
| Ghardan/ Mwaqar/Fuhais | 4 | |||||
| Aquifer (A) | B2/A7: chert limestone, crystalline limestone with dolomite | 6 | ||||
| A4: hard dense limestone, and dolomitic limestone | 6 | Wadi-Essir/Hummar/ Na’our/Kurnub | 6 | |||
| A1/2: limestone inter bed with thick marl limestone | 6 | Hydraulic Conductivity (C) (m/s) | 0.5 × 10−5 - 0.5 × 10−4 | 1 | ||
| K: massive white sandstone with reddish silt and shale | 6 | 0.5 × 10−4 - 0.15 × 10−3 | 2 | |||
| Soil Media (S) | Inceptisol | 5 | 0.15 × 10−3 - 0.36 × 10−3 | 4 | ||
| 0.36 × 10−3 - 0.51 × 10−3 | 6 | |||||
| Vertisols | 2 | 0.51 × 10−3 - 0.10 × 10−2 | 8 | |||
| >0.10 × 10−2 | 10 |