Aras

The Aras (also spelled Araks, Arax, Araxes, or Araz) is a Caucasus river and is the Longest River in Iran. It begins in eastern Turkey and travels through the boundaries of Turkey and Armenia, Turkey and the Azerbaijani exclave of Nakhchivan, Iran and both Azerbaijan and Armenia, and eventually through Azerbaijan to the Kura River. It drains the south side of the Lesser Caucasus Mountains, whereas the Kura drains the north side. The river has a total length of 1,072 kilometers (666 miles) and a watershed area of 102,000 square kilometers (39,000 sq mi). The Aras is one of the Caucasus' longest rivers.

The Aras River begins near Erzurum, Turkey, and joins the Akhuryan River southeast of Digor. It flows from Digor along the Armenia–Turkey border and then near the corridor connecting Turkey to Azerbaijan's Nakhchivan exclave. It then follows the Iranian-Armenian and Iranian-Azerbaijan borders.

Total Length: 666 miles