river in Krasnoiarsk Krai, RSFSR, left tributary of the Podkamennaia Tunguska. Length, 504 km; area of basin, 33,800 sq km. It rises in and flows through the Central Siberian Plateau. It is fed mainly by snow. The river freezes in October or November, and the ice breaks between April and May. The Vel’mo is navigable to the mouth of its chief tributary, the Teia River (from the left). There are about 300 lakes in the basin of the Vel’mo.