The Klyazma River is a river in the Moscow, Nizhny Novgorod, Ivanovo and Vladimir Oblasts in Russia, a left tributary of the Oka River.
The length of the river is 686 kilometres. The area of its drainage basin is 42,500 square kilometres. The Klyazma River usually freezes up in November and stays under the ice until mid-April, although in faster moving stretches ice-free water occurs until the air temperature drops below minus 10 °C.
Its main tributaries are the Ucha, Vorya, Kirzhach, Peksha, Nerl, Uvod, Teza, Lukh, Sudogda and Suvoroshch.
Wikipedia https://en.wikipedia.org/wiki/Klyazma_River
Coordinates 55°59'13.967" N 37°22'16.634" E
