Buotama

The Buotama begins in the northern Aldan Highlands and runs northeast through a narrow valley beside the Lena Plateau before bending north to enter the Lena about one hundred kilometres above Yakutsk. Its 418-kilometre course crosses larch forest, frozen ground and a dense network of small drainage lines. More than sixty tributaries and roughly two hundred lakes store water across the basin.

Snowmelt and summer rain produce the main flood in May. The river freezes between October and November and opens at the end of April or early May, so ice governs travel for much of the year. Evenki hunting and fishing communities used the valleys and lakes through seasonal camps, following game and fish while moving by boat, ski and reindeer. River crossings and winter tracks joined the Aldan uplands to the Lena corridor.

The broad valley offered pasture, timber and shelter in a severe climate. Families moved between hunting grounds, fishing places and river settlements, using local knowledge of flood timing and ice thickness. The Buotama therefore belonged to a Sakha and Evenki landscape of water routes, seasonal camps and long-distance movement before industrial settlement altered parts of the basin.