| Summary: | The general hydrogeology of the south Sinjar plain was studied and correlated with the adjacent anticlinal area to its east. This old plain is underlain by the Upper Fars Formation of Upper Miocene age while the foothills to the east are underlain by the Lower Fars Formation of Middle Miocene age. The oldest formation is exposed in the core of the highest mountain in the area, Sinjar, which provides the northern limit of the watershed of the area. The extensive aquifers of the Upper Fars Formation bear fresher waters than the less important Lower Fars aquifers, although the latter have played an important role in the deposition of economic sulfur in many of the anticlines. The average annual rainfall in the area ranges between 200 and 400 mm and provides enough replenishment for the aquifers to be sufficient for agricultural and stock use. The data collected from the field includes water level measurements in the different aquifers, ground water conductivity, pH, temperature and representative water samples. More than two hundred such samples were analyzed in detail together with previously available analyses, making a total of 326 samples available for interpretation. -11. The flow of ground water was studied from prepared water level maps and the characteristics of the aquifers studied from the experimental pumping tests in the field. The major problem in this area is the poor quality of the ground water. This feature has been studied with the application of computer programmes which have dealt with all the available analyses, and have given clear classification for the different waters in the aquifers. These results have also been correlated with the geological classification of water.
|
|---|
