Kotuykan

The Kotuykan (Котуйкан) is a river in Krasnoyarsk Krai, Russia. It is a right hand tributary of the Kotuy.

The Kotuykan is 447 km long, and the area of its basin is 24300 km2. It freezes up in late September and breaks up in late May or early June.

Course
The Kotuykan has its source in the highest part of the Anabar Plateau. It is a fast-flowing river that flows westwards in a deep valley, often surrounded by picturesque cliffs of marine sediments exposed by erosion that are 1.5 billion years old.

The Kotuykan joins the right bank of the Kotuy as the latter flows from the south across the western side of the Anabar Plateau, 234 km from its mouth and 461 km from the mouth of the Khatanga in the Laptev Sea.

Its main tributaries are the 102 km long Ilya (Илья) and the 54 km long Dyogdyo (Дёгдё).