The Gaza Coastal Aquifer (GCA) is the major source of water in
the Gaza Strip. The GCA is a transboundary aquifer, shared by
approximately 600 Israeli wells and more than 3000 Palestinian
wells. Recent studies show noticeable deterioration in aquifer
water quality: chloride, nitrate, sulfate, and fluoride
concentrations exceed the maximum contaminant levels in most of
the wells in the Gaza Strip. Many agricultural wells are no
longer used due to high salinity. This high salinity is an
indication of saltwater intrusion, which appears mainly in
coastal aquifers due to excessive pumping. This study is an
attempt to determine the impact of pumping on the hydraulic head
at the coastline of the Gaza Strip.