Shatt al-Arab basin

city in Khuzestan Province, Iran

river in Southwest Asia, formed by the confluence of the Euphrates and the Tigris in the town of al-Qurnah in the Basra Governorate of southern Iraq

The Karun (, ), the Ancient Greek Eulaeus ( or Εὐλαῖος, Hebrew Ulai (), is the Iranian river with the highest water flow, and the country's only navigable river. It is long. The Karun rises in the Zard Kuh mountains of the Bakhtiari district in the Zagros Range, receiving many tributaries, such as the Dez and the Kuhrang. It passes through the city of Ahvaz, the capital of the Khuzestan Province of Iran, before emptying to its mouth into Arvand Rud.

wetlands in Iraq, Iran and Kuwait

Al-Qurnah (Kurnah or Qurna, meaning connection/joint in Arabic) is a town in southern Iraq about 74 km northwest of Basra, that lies within the conglomeration of Nahairat. Qurna is located at the confluence point of the Tigris and Euphrates rivers to form the Shatt al-Arab waterway. Local folklore holds Qurnah to have been the original site of biblical paradise, the Garden of Eden, and location of the Tree of Knowledge.

thumb|A bridge over the Bahmanshir River in the Istgah-e Haft neighborhood of Abadan, Iran

series of armed skirmishes between Iran and Iraq in the Persian Gulf

swamp in Iraq and Iran

tributary of the Tigris on whose banks stands the city of Kirkuk

swamp in Iraq

former territorial dispute between Iran and Iraq

marshes in Southern Iraq; a UNESCO World Heritage Site