Angara (Ангара́) is a river, 1840 km (1150 m.) long, in SE Siberia, Russia.
After leaving the southwestern end of Lake Baikal, it flows north past the cities Irkutsk and Bratsk, then turns west after receiving the Ilim River and flows into the Yenisei River near Strelka.
Below its junction with the Ilim River the Angara is known also as the Upper Tunguska (RussianVerkhnyaya Tunguska). The Angara is navigable between Irkutsk and Bratsk; below Bratsk there are many rapids. At Bratsk there is a large dam with one of the world's largest hydroelectric power plants (ca. 4,500 MW); a smaller (660 MW) hydroelectric station is at Irkutsk. Two other dams span the river, making it one of the world's greatest sources of hydroelectric power.
The Upper Angara River (RussianVerkhnyaya Angara), ca. 320 km long, rises NE of Lake Baikal and flows SW through the Buryat Republic into the lake; it is partly navigable.
The Angara (Ангара́) river drains Lake Baikal and runs 1840 km from the regional capital Irkutsk to converge with the Yenisei at Strelka (58.101° N 92.998° E).
The tributary Oka and Iya rivers, which rise on the north slopes of the Eastern Sayan mountains, form the 'jaws' and 400 km of the Angara form the 'tail'.
The river starts to widen, its bed being littered with islands as numerous rivers augment its flow, in particular 1800 km Stony (Podkamennaya) Tunguska, and the 3000 km Lower (Nizhnyaya) Tunguska at Turukhansk draining the desolate central Siberian Plateau from the east.