characteristics and to predict the drawdown of the upper aquifer in the Hallabat-Khalidiya
Wellfield in the eastern part of Jordan, for the next 25 years (the year 2025). There are two
aquifers, the upper one composed of basalt and carbonates of the Upper Cretaceous age,
while the lower one is composed of Lower Cretaceous Kurnub sandstones. The total annual
recharge to the upper aquifer is modeled to be about 6× 106 m3 divided into inflow from …