| | Variable | Equation | Definition | Units1 |
| | ARIR | 15, 26 | Current irrigated area | m−2·day−1 | | ARPI | 11, 13 | Potential irrigated area | m3·ha−1·year−1 | | ARTI | 13, 15 | Target for the irrigated area | €·year−1 | | CDAB | 8, 11, 14, 19 | Current distance of the AB from the shoreline | m3·ha−1·year−1 | | CDFB | 5, 7, 8, 19 | Current distance of the FB from the shoreline | €·ha−1·year−1 | | CDSB | 3, 6, 7, 8, 14 | Current distance of the SB from the shoreline | €·m−3 | | CHFW | 10, 20 | Current average height of the FGS above sea level | m | | CSTW | 20, 21, 24 | Water cost per cubic meter | m | | EDFB | 4, 5 | Equilibrium distance of the FB from the shoreline | m3·ha−1·year−1 | | EDSB | 2, 3, 6, 14 | Equilibrium distance of the SB from the shoreline | m3·ha−1·year−1 | | EHFW | 9, 10 | Equilibrium average height of the FGS above sea level | km | | EXPF | 13, 22 | Expected profit per irrigated farm | km | | EXWX | 23, 25 | Expected water requirement for profit maximization | km | | IRDS | 17, 21, 23, 26 | Irrigation dose from groundwater | km | | PFTH | 21, 22 | Profit per hectare | km | | PPIR | 16, 17, 23 | Contribution of direct precipitation to irrigation | year−1 | | PUMP | 1, 26 | Groundwater pumping | dmnl | | RAIA | 14, 15 | Rate of abandonment of irrigated area | ha | | S(x) | 7, 18 | Salinity of mixing water along the x-axis distance from the shoreline, CDSB ≤ x ≤ CDFB | kg·m−3 | | SLFT | 17, 18, 19, 24 | Salinity factor | ha | | TDFW | 1, 2, 4, 9 | Net aquifer discharge | ha | | TMBE | 3, 5, 6, 14 | Time for the SB and FB to achieve equilibrium | year | | WRXP | 24, 25 | Water requirement for profit maximization | mm·year−1 | | YLDH | 17, 21 | Crop yield per surface unit | kg·ha−1·year−1 |
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