Which Angara River reservoir is cited as second biggest by reservoir storage capacity?

Bratsk Reservoir is the Angara River reservoir cited as the second biggest by reservoir storage capacity.

Located in Russia’s Irkutsk Oblast, the reservoir was created behind the Bratsk Hydroelectric Power Station. It covers about 5,470 square kilometres and can hold roughly 169.27 cubic kilometres of water, placing it among the world’s great artificial water bodies by stored volume.

The concrete dam was completed in 1967. It is about 125 metres high and 4,417 metres long, and its generating station has an installed capacity of 4,500 megawatts. The Baikal–Amur Mainline railway famously runs along the top of the dam, linking the project to one of Siberia’s major transport corridors.

Bratsk is more than a power reservoir. It supports water transport, municipal supply, forestry, fisheries and recreation. Its creation also flooded settlements and agricultural land, a major social consequence later reflected in Valentin Rasputin’s novel Farewell to Matyora. The reservoir is named after the nearby city of Bratsk.