Sector No. 5 is located on the right side of Euphrates River, Southeast of ALMyadeen City. Many lands there are not suitable for agricultural uses, because of the saline soils. This research aimed to evaluate the system of the unconfined groundwater resources, by adopting the measurement results in 40 piezometers, drilled in aquifer of quaternary deposits which consist of loam, gravel, and sandy gravel, underneath which are impervious Neogene deposits. The annual changes of groundwater levels of quaternary aquifer were 1-3 meters, due to rain and irrigation water leaking. The groundwater table is shallow (less than 2.5 m), because of the excessive irrigation, which gives an urgent necessity to construct effective drain network to reduce groundwater levels. Groundwater salinity reaches 29 gr/liter, and concentrations of the chloride and sulphate are 11 gr/liter, 3,5 gr/liter in some locations, because of the natural and artificial situations. Therefore, this groundwater is not suitable for domestic, or agricultural purposes in most areas of the region.