The Botan River (Turkish: Botan Çayı, Botan Suyu, or Uluçay; Kurdish: Çemê Botanê; Neo-Syriac: ܒܵܘܗܬܵܢ ܨܘܼ‎ bō(h)tān ṣū) is located in the Siirt Province of southeastern Turkey. The upstream of the Botan River is often called Çatak, which flows mostly in the Van Province. The uppermost part of the Çatak River, west of the town of Çatak, is sometimes called Norduz. It originates in the high mountains around the Nordüz Plateau, near the border between Van and Hakkâri, and flows westwards before it turns to the northwest. The river has shaped a canyon on its way. The altitude difference between the valley and the top of the mountains reaches about 1,000 m (3,300 ft).