Parameter Weight GALDIT Factor Variable Range Importance Rating
Groundwater occurrence
1
Confined aquifer Unconfined aquifer Leaky confined aquifer Bounded aquifer 10 7.5 5 2.5
Aquifer hydraulic conductivity (m/day)
3
>40 10-40 5-10 <5 10 7.5 5 2.5
Height of groundwater level above sea level (m)
4
<1.0 1.0-1.5 1.5-2.0 >2.0 10 7.5 5 2.5
Distance from the shore (m)
4
<500 500-700 750-1000 >1000 10 7.5 5 2.5
Impact of existing status of seawater intrusion (μs/m)
1
>3000 2000-3000 1000-2000 <1000 10 7.5 5 2.5
Saturated thickness of the aquifer (m)
2
>10 7.5-10 5-7.5 <5 10 7.5 5 2.5