Parameter Modified Variable Range Modified Importance Rating
Groundwater occurrence
Confined aquifer Unconfined aquifer Leaky confined aquifer Bounded aquifer 10 7.5 5 2.5
Aquifer hydraulic conductivity (m/day) >40 34-40 28-34 22-28 16-22 10-16 8-10 6-8 4-6 <4 10 9 8 7 6 5 4 3 2 1
Height of groundwater level above sea level (m) <1.0 1.0-1.2 1.2-1.4 1.4-1.6 1.6-1.8 1.8-2.0 2.0-2.2 2.2-2.4 2.4-2.6 >2.6 10 9 8 7 6 5 4 3 2 1
Distance from the shore (m) <500 500-600 600-700 700-800 800-900 900-1000 1000-1100 1100-1200 1200-1300 >1300 10 9 8 7 6 5 4 3 2 1
Impact of existing status of seawater intrusion (μs/m) >3000 2600-3000 2200-2600 1800-2200 1400-1800 1000-1400 600-1000 200-600 <200 - 10 9 8 7 6 5 4 3 2 1
Saturated thickness of the aquifer (m) >10 9-10 8-9 7-8 6-7 5-6 4-5 3-4 2-3 <2 10 9 8 7 6 5 4 3 2 1