Tobol (Тобол in Russian) is a river in Kazakhstan and Kurgan and Tyumen Oblasts in Russia, left tributary of Irtysh. The length of the Tobol River is 1591 km. The area of its basin is 426,000 sq km. The lower reaches of the river freeze up in late October - November, the upper reaches - in November. It stays under the ice until the second half of April - early May. The biggest tributaries of the Tobol are the Uy, Iset, Tura, Tavda, and Ubagan. The Tobol River is navigable within 437 km from its estuary. The cities of Lisakovsk, Rudniy, Kustanai, Kurgan, and Yalutorovsk are located on the Tobol. The Murray River in Australia. ... Kurgan Oblast (Russian: ) is a federal subject of Russia (an oblast). ... Categories: Russia geography stubs | Oblasts of Russia ... A tributary (or affluent or confluent) is a contributory stream, a river that does not reach the sea, but joins another major river (a parent river), to which it contributes its waters, swelling its discharge. ... Irtysh River (also Ertis) a river in Asia, the chief tributary of the river Ob. ... A kilometre (American spelling: kilometer), symbol: km is a unit of length in the metric system equal to 1000 metres (from the Greek words χίλια (khilia) = thousand and μέτρο (metro) = count/measure). ... Basin has several meanings: Look up basin in Wiktionary, the free dictionary. ... Square kilometre (US spelling: Square kilometer), symbol km², is an SI unit of surface area. ... Look up October in Wiktionary, the free dictionary. ... Look up November in Wiktionary, the free dictionary. ... Template:AprillCalendar Look up Aprill in Wiktionary, the free dictionary. ... Look up May in Wiktionary, the free dictionary. ... Iset River (Исеть in Russian) is a river in the Sverdlovsk, Kurgan, and Tyumen Oblasts in Russia. ... Tura (Тура́), river in Russia, left tributary of Tobol. ... Kostanai (Костанай, some maps use spelling Kostanay, Qostanay or Qostanai. ... Kurgan (кургáн) is the Russian word (of Turkic origin) for tumulus, a type of burial mound or barrow, heaped over a burial chamber, often of wood. ...