This book is attempted to evaluate the water quality of the Shatt Al-Arab River based on some chemical and physical parameters, and to investigate the impact of water river discharge and water elevation on electrical conductivity (EC) and some other parameters . It also attempted to identify the extent of the impact of the Arabian Gulf salt wedge on the Shatt Al-Arab River.Water samples were collected from six stations along the final 127 km of the river to its mouth in the Gulf. The parameters investigated were: EC, salinity (SAL), acidity (pH), dissolved oxygen (DO) and water temperature (T...