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Tom(tôm), river, c.525 mi (840 km) long, rising in the Alatau range, S Siberian Russia. It flows N through the Kuznetsk Basin past Novokuznetsk, Kemerovo, and Tomsk into the Ob River. It is navigable from Novokuznetsk.
(in its upper course, Tomskaia Rossoshina), a river in Amur Oblast, RSFSR; a left tributary of the Zeia River (Amur River basin). The Tom’ is 433 km long and drains an area of 16,000 sq km. It rises in the Turana Range and flows through the Zeia-Bureia Lowland. It is fed primarily by rain. High water lasts from May through October. The mean flow rate near the mouth is 103 cu m per sec. The Tom’ freezes in late October or early November, and the ice breaks up in late April or early May. The city of Belogorsk is located on the river.
a river in the Khakass Autonomous Oblast and in Kemerovo and Tomsk oblasts, RSFSR; a right tributary of the Ob’. The Tom’ is 827 km long and drains an area of 62,000 sq km. It rises on the western slopes of the Abakan Range. In its upper course the Tom’ is a mountain river; farther downstream it flows through the Kuznetsk Basin and the Western Siberian Lowland. The floodplain is up to 3 km wide, and the riverbed has many bars. The Tom’ is fed by mixed sources, mainly snow. The mean flow rate 580 km from the mouth is 650 cu m per sec, reaching a maximum of 3,960 cu m per sec. The mean flow rate at the mouth is 1,110 cu m per sec. The river freezes from October to early December, and the ice breaks up from late April to early May. The largest tributaries are the Mras-Su, the Kondoma, and the Un’ga on the left and the Usa, the Verkhniaia Ters’, the Sredniaia Ters’, the Nizhniaia Ters’, and the Taidon on the right. The river is used to float timber. The Tom’ is navigable as far as Tomsk and, during high water, as far as Novokuznetsk. The cities of Novokuznetsk, Kemerovo, and Tomsk are situated on the river. The Kuznetsk Coal Basin is located in the Tom’ River basin.