Abstract
The investigation region is found in the central part of Iraq within the of Karbala Governorate, where it is located in the western part of the Governorate and Lake Razaza in the north of the region, while in the western and southern part of the region is Anbar Governorate and geographically (43 degrees 10 ' 25.7 '', 43 degrees 39 '' 0.3 '') longitude and (32 degrees 10 ' 25.7 '', 32 degrees 36 ' 25.7 '') latitude. The area of study is about 2400 Km(2). The groundwater modeling system (GMS) v10.3 program was used for the modeling of ground water in the area containing about 22 wells distributed throughout the study area and the discharge of these wells ranges from 7 to 100 l/s and the rate of discharge of these wells up to 36 l/s. The model was initially operated within a steady state and after obtaining a match between the models results with the initial values of groundwater levels, the results of this case were adopted as inputs to run the model within the unsteady state. The model was worked within the sight of the above wells for 3 years and the results of the operation indicate a decrease in groundwater levels ranging from 2 to 21 m distributed uniformly throughout the study area.