The Vorotan (Armenian: Որոտան), or Bargushad (Armenian: Բարգուշատ, Azerbaijani: Bərgüşad) or Bazarchay (Azerbaijani: Bazarçay), is a transboundary river in the South Caucasus that is the largest right tributary of the Hakari river.

[1] It starts from the northwestern slopes of the Syunik Plateau, from the Tsalk pond and adjacent springs at an altitude of 3,045 m, receives the water of streams flowing from several small ponds, as well as the springs of Gorayk village, then it flows in a southeastern direction through the territory of Sisian and Goris regions.

The river enters Azerbaijan again, flowing for 43 km (27 mi) through the districts of Qubadli and Zangilan.

[4][5][6] The river flows mostly through mountainous regions of Armenia and in several places has formed deep canyons.

[8] Begun during the 1980s, work was stopped in 1988, when only 18 km (11 mi) had been completed, because of the outbreak of the First Nagorno-Karabakh War.