 It flows north-eastwards from the confluence of the rivers Kuimveyem and Kylvygeyvaam in the Koryak Range through the southern end of the Anadyr Lowlands into Onemen Bay, part of the Anadyr River estuary of the Bering Sea at the Gulf of Anadyr.The Rarytkin Range rises along the left bank of the river in its middle and lower course.