Yudoma

The Yudoma (Russian: Юдома) is a river in Khabarovsk Krai and Yakutia, Russian Federation. Its length in 765 kilometres (475 mi) and its basin is 43,700 square kilometres (16,900 mi) (about the size of Switzerland). It joins the Maya which joins the Aldan which joins the Lena which flows into the Arctic Ocean. The Yudoma flows in Eastern Siberia in the Yudoma-Maya Highlands near the Okhotsk Coast. Its northern headwaters are in the Suntar-Khayata Range. To the east is the Yudoma Range and then the Okhota, to the south the Maya and to the northwest, the Allakh-Yun, another tributary of the Aldan. It is formed at the confluence of the 55 km (34 mi) long Nitkan from the left and the 43 km (27 mi) long Avliya from the right. At its mouth the minimum water flow is 3.7 cubic metres per second (130 cu ft/s) in March, and the maximum is 1,081 cubic metres per second (38,200 cu ft/s) in June. At its mouth it is 300 metres (980 ft) wide and 4 metres (13 ft) deep. The lower 270 kilometres (170 mi) are considered navigable.