Uaym

(from the article `Tigris-Euphrates river system`) ...irrigation areas behind a number of dams. The Tigris, in contrast, flows down the edge of a long, multichanneled catchment basin and is fed by ... ...reaches 11,834 feet (3,607 metres). The region is heavily dissected by numerous tributaries of the Tigris, notably the Great and Littl...
Found on http://www.britannica.com/eb/a-z/u/20
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