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Oka (river) facts for kids

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NN Spit from Fedorovskogo Embankment 08-2016 img2.jpg
The Oka riverbank in Nizhny Novgorod
Map of the Volga watershed with the Oka highlighted
Native name Ока́
Country Russia
Cities Oryol, Kaluga, Serpukhov, Kolomna, Ryazan, Murom, Dzerzhinsk, Nizhny Novgorod
Physical characteristics
Main source Oryol Oblast
226 m (741 ft)
River mouth Volga
Nizhny Novgorod
67 m (220 ft)
Length 1,500 km (930 mi)
  • Average rate:
    1,260 m3/s (44,000 cu ft/s)
Basin features
Basin size 245,000 km2 (95,000 sq mi)

The Oka (Russian: Ока́) is a river in Russia. It is a tributary of the Volga River. The Moskva River, which is the main river in Moscow, flows into it. The river is very long and is 1,500 km (930 mi) long.

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