System of un confined aquifer in the area located between Al-snobar and Al-kabir al-shimali rivers

This is a study of free groundwater level changes through time, and the level of its being affected by natural and artificial factors, which allows evaluating general water situation of the aquifer. This study shows that groundwater system in the study area from the type of water division line (climatic system) connects in direct connection with infiltration from rainfalls in which the natural factors (recharge) play the main role in forming the system of groundwater, in addition to the artificial factors (irrigation), and these factors yield three periods of the obvious terminal changes of the levels in hydrologic year (descending, stability, ascending). However, groundwater is renewable because of stability in the situations of this water, and its discharge to hydrodynamic net of groundwater in Al-kabir al-shimali and Al-snobar rivers and in the Mediterranean Sea as well.

Defining hydogeological parameters by using monitoring data of the ground water system in the area between AL-Snobar and ALKabir AL-Shimali Rivers

This research discusses the way of defining hydogeological parameters by using monitored data of the ground water system, for defining the values of these coefficients on large areas, which has a practical significance especially in modeling the hydrogeological problems which allows explaining and checking the hydrodynamic and the hydrogeological structures of the area and the reasons of changing the filteration properties of the aquifer. It appears that transmissivity varied from 36 to 570 m2/day, the permeability from 1 to 53 m/day, and the water yield from low to medium between 0.00004 and 0.2 because of the rising of the coefficient of diffusion. The filtration recharge approximately from 1 - 40% from the rain falls. The obtained results are in good conformity with the geological characteristics - structural and litologic - facies characteristics for the study area.