Chona

a river in Irkutsk Oblast and the Yakut ASSR, a right tributary of the Viliui River of the Lena basin. The Chona is 802 km long and drains an area of 40,600 sq km. It flows over the Central Siberian Plateau and empties into the Viliui Reservoir. The lower 170 km of the river valley is flooded. The Chona is fed by snow and rain. The mean flow rate is approximately 125 cu m per sec. The Chona freezes over in October, and the ice breaks up in May.