The Tigris and Euphrates, with their tributaries, form a major river system in Western Asia. From sources originating in the Armenian Highlands of eastern Turkey they flow by / through Syria through Iraq into the Persian Gulf. The system is part of the Palearctic Tigris -- Euphrates ecoregion, which includes Iraq and parts of Turkey, Syria, Iran, Saudi Arabia, Kuwait and Jordan.
where do the tigris and euphrates rivers end
the Persian Gulf