The Inya is a river in Kemerovo and Novosibirsk Oblasts of Russia. It is a right tributary of the Ob. It is 663 km long, with a drainage basin of 17600 km2. By the Inya lie the towns of Leninsk-Kuznetsky and Toguchin. The river flows through a rather densely populated area, and is crossed by several railway lines.

Course

The Inya has its sources in a ridge in the central part of the Kuznetsk Basin, and flows through Kemerovo Olast in a mainly westerly direction, then enters Novosibirsk Oblast and finally joins the Ob, just 5 km southeast of downtown Novosibirsk. At the village of Beryosovka, some 30 km from its mouth, the river's average discharge is 470 m3/s. The minimum discharge in February is 8.6 m3/s, and the maximum is in May at 195 m3/s. Near the mouth the river is some 60 m wide and 1.5 m deep. Its main tributaries are the Kasma, Ur and Bachat. The river freezes over in the beginning of November, and stays frozen till the spring thaw starts in mid-April.