After drying operation in the early nineties of the last century, very large numbers of the archaeological sites appeared throughout the marsh and the old course of the Euphrates River, which represent prehistoric and early historic settlements. Others date to the earliest periods of the Arab and Islamic settlement. The sites may indicate possible time frames when the river was active. This book shed light on the basic causes of river diversions in addition to the neotectonic activity of the subsurface structures and their effects on the region. Also, it gives imagination and general overview about the paleogeography of the southern part of the Mesopotamian plain, depending on radiocarbon dating and the ancient course of Euphrates through its relationships with archaeological sites.