Klyazma

The Klyazma (, "Klyaz'ma") is a river in the Moscow, Nizhny Novgorod, Ivanovo and Vladimir Oblasts in Russia, a left tributary of the Oka.
The length of the river is . The area of its drainage basin is . The Klyazma 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 .
The largest tributaries of the Klyazma are, from source to mouth:
The Klyazma is navigable within from its estuary and in the area of the Klyazminskoye Reservoir. The cities of Gorokhovets, Mendeleyevo, Pavlovsky Posad, Vladimir, Kovrov, Shchyolkovo, Losino-Petrovsky, Noginsk, Orekhovo-Zuyevo, Sobinka and Vyazniki are located on the shores of the Klyazma River.
The basin of Klyazma was the center of Vladimir-Suzdal land.