Usta (Russia)
The Usta is a river in Nizhny Novgorod and Kirov Oblasts, Russia. It is a left tributary of the Vetluga. It is in length, with a drainage basin of. Most of its water comes from melting snow. The average discharge from its mouth is. The Usta freezes over in November, and stays icebound until April. It is navigable in its lower reaches. The town of Uren is located by the Usta.