The Naryn (Kazakh: Нарын, Russian: Нарым, Narym) is a river in Eastern Kazakhstan, a tributary of the Irtysh, originating at the junction of the ridges Narym and Sarymsakty of wetland formed by the mountain runoff streams. With its low headwaters and smooth clay-sandy bed, the width of the river valley at places extends to more than 20 kilometres (12 mi); in some places it narrows to 25 to 250 metres (82 to 820 ft). The width of the river is 15 to 25 metres (49 to 82 ft), and the depth varies from 0.5 to 2.5 metres (1.6 to 8.2 ft).