Oloy River

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Course of oloi in the catchment area of the Kolyma

The oloi (Russian Олой ) is a right tributary of the Kolyma Omolon in the catchment area in the Autonomous District of the Chukchi in northeastern Siberia.

The oloi arises in Kolymagebirge to the union of its two source rivers Left and Right oloi oloi. It flows in a wide valley along the southern slope of parallel Oloigebirges in a northwesterly direction. After 414 km of oloi meets the Omolon. Together with its source river linker oloi the total length 471 km. The oloi drains an area of 23,100 km ². In October, the river freezes. The end of May he is ice-free again.