The Tigris–Euphrates river system is a large river system in Western Asia that flows into the Persian Gulf. Its primary rivers are the Tigris and Euphrates, along with smaller tributaries.

Tigris-Euphrates river system, great river system of southwestern Asia. It comprises the Tigris and Euphrates rivers, which follow roughly parallel courses through the heart of the Middle East. The lower portion of the region that they define, known as Mesopotamia (Greek: “Land Between the Rivers”), was one of the cradles of civilization.

The Tigris (/ ˈ t aɪ ɡ r ɪ s / TY-griss; see below) is the eastern of the two great rivers that define Mesopotamia, the other being the Euphrates. The river flows south from the mountains of the Armenian Highlands through the Syrian and Arabian Deserts , before merging with the Euphrates and reaching to the Persian Gulf .

The Tigris and Euphrates Rivers are two of the most significant waterways in the Middle East, playing a crucial role in the development of ancient civilizations and modern societies. The Tigris River originates in the Taurus Mountains of eastern Turkey and flows southeastward through Iraq before joining the Euphrates River to form the Shatt al ...

Tigris-Euphrates river system - Mesopotamia, Shatt al-Arab, Basins: The Tigris, rising in Lake Hazar (a small mountain lake southeast of Elazığ) and fed by a number of small tributaries, drains a wide area of eastern Turkey.

The Euphrates softshell turtle is an endangered soft-shelled turtle that is limited to the Tigris–Euphrates river system. [ 32 ] [ 33 ] The Neo-Assyrian palace reliefs from the 1st millennium BCE depict lion and bull hunts in fertile landscapes. [ 34 ]

Tigris-Euphrates river system - Exploration, Study, Mesopotamia: As one of the world’s major ecosystems and a cradle of civilization, the Tigris-Euphrates system long has been a focus of scientific and historical research.