The Murat River, also called Eastern Euphrates (Turkish: Murat Nehri, Kurdish: Çemê Miradê, Armenian: Արածանի, romanized: Aratsani), is a major source of the Euphrates River. The Ancient Greeks and Romans used to call the river Arsanias (Ancient Greek: Ἀρσανίας). It originates near Mount Ararat north of Lake Van, in Eastern Turkey, and flows westward for 722 km (449 mi) through mountainous terrain. Before the construction of the Keban Dam, the Murat River joined the Karasu River or Western Euphrates 10 km (6.2 mi) north of the dam site and 13 km (8.1 mi) north of the town of Keban. In Muş Province, the river is interrupted near Toklu by the Alpaslan-1 Dam, which was completed in 2009. The Alpaslan-2 Dam was completed in 2021 and is located downstream of Alpaslan-1. The river merges into the reservoir of the Keban Dam, at one time Turkey's largest dam, which was completed in 1974 and provides electrical power. In Bingöl and Elazığ provinces, Kalehan Energy has four dams planned for the river: from upstream to downstream, the Upper Kaleköy Dam, Lower Kaleköy Dam, Beyhan I Dam, and Beyhan II Dam. The Beyhan I and Upper Kaleköy dams are already completed. Once completed, all four dams will have a combined installed capacity of 1,855 MW.
