Kyuyutingde

The Kyuyutingde (Кюютингдэ) is a river in Yakutia (Sakha Republic), Russia. It is a tributary of the Olenyok with a length of 138 km —196 km including the Debengde at its head— and a drainage basin area of 3420 km2. It flows north of the Arctic Circle across a desolate area of Bulunsky District devoid of settlements and joins the Olenyok in its final major bend, where it begins to head northwards until the Laptev Sea.

The river gives its name to the Kyuyutingde Formation, a dolomite geological formation in the Olenyok Uplift.

Course
The Kyuyutingde is a right tributary of the Olenyok. Its sources are at the southern end of the Kystyk Plateau at the confluence of the 58 km long Debengde and the 40 km long Sygynakhtaakh. It flows first in a roughly southeastern direction, then it bends southwestwards for a short stretch and bends finally westwards, heading in that direction until the Olenyok floodplain, where it enters a low, marshy area with many small lakes to the north. It meanders strongly until it joins the great river 392 km upstream of its mouth.

Owing to the harshness of the climate the river is frozen between early October and early June. Its longest tributaries are the 64 km long Kharyalaakh from the right, as well as the 80 km long Bulbarangda from the left.