The River Euphrates

View of the Euphrates River, photo from the Arab Center, Washington DC.

The longest river in southwest Asia, the Euphrates River is 1,740 miles (2,800 km) long, and it is one of the two main constituents of the Tigris-Euphrates river system. The Tigris Euphrates valley was the birthplace of the ancient civilizations of Assyria, Babylonian, and Sumer. Formed by the confluence of the Karasu and Murat rivers in the Armenian Highland, the upper Euphrates flow through steep canyons and gorges, southeast across Syria, and through Iraq to the Mesopotamian Marshes and into the Persian Gulf. The marshes constitute a flooded grasslands and savannas ecoregion, also known as the Tigris-Euphrates alluvial salt marsh.


A region in northern Mesopotamia whose kings ruled most of the ancient Near East in the 8th and 7th centuries B.C.E.

Of or relating to ancient lower Mesopotamia and its empire centered in Babylon.

Together with the Tigris, the Euphrates is one of the two defining rivers of Mesopotamia.

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