| Parameter | Method of Calculation | |
| S | 1-Soil Effective field capacity | Laboratory measurement on soil samples using ceramic plate apparatus with aid of national soil maps [23] [24] |
| W | 2-Percolation rate (Recharge) | Field measurements and tests |
| R | 3-Rock type | Structure contour maps [25] , Natural Resources Authority (NRA) and field visits |
| T | 4-Thickness | Natural Resources Authority Mapping reports (NRA) and field visits [25] |
| Q | 5-Bonus points perched aquifer | Not relevant in study area |
| HP | 6-Bonus points for hydraulic pressure conditions | Not relevant in study area (no areas with upward leakage) |