Barguzin (river)

The Barguzin is a river in Buryatia, Russia. It is the third longest river in Buryatia, measuring 480 kilometers (300 mi) in length. Its drainage basin covers an area of 21,100 square kilometers (8,100 sq mi).

The river originates in the Ikat Range and flows southwest through the Barguzin Valley before emptying into Barguzin Bay on the northeastern shore of Lake Baikal. The Barguzin Valley is a large, flat-bottomed depression between the Barguzin and Ikat mountain ranges, known for its rich biodiversity and unique microclimate.

The Barguzin River is navigable for a considerable distance upstream, historically serving as an important transportation route for the region. The river is also known for its fishing, with species such as grayling and lenok found in its waters. The surrounding area is sparsely populated and largely undeveloped, preserving the river's natural character. The Trans-Siberian Railway runs near the Barguzin River for a portion of its length.