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Oka (river)
&sq=&lang=en&file=File:Question_book-new.svg){kind=small} | This article needs additional citations for verification. (April 2020) |
| Oka | |
|---|---|
&sq=&lang=en&file=File:NN_30-06-2022_the_Spit_of_Nizhny_Novgorod_at_sunset_04.jpg) The Oka riverbank in Nizhny Novgorod | |
&sq=&lang=en&file=File:Okarivermap.png) Map of the Volga watershed with the Oka highlighted | |
 | |
| Native name | Ока (Russian) |
| Location | |
| Country | Russia |
| Cities | Oryol, Kaluga, Serpukhov, Kolomna, Ryazan, Murom, Dzerzhinsk, Nizhny Novgorod |
| Physical characteristics | |
| Source | |
| • location | Oryol Oblast |
| • coordinates | 52°21′45″N 36°13′20″E / 52.36250°N 36.22222°E |
| • elevation | 226 m (741 ft) |
| Mouth | Volga |
• location | Nizhny Novgorod |
• coordinates | 56°19′55″N 43°58′53″E / 56.33194°N 43.98139°E |
• elevation | 67 m (220 ft) |
| Length | 1,500 km (930 mi) |
| Basin size | 245,000 km2 (95,000 sq mi) 244,308.3 km2 (94,328.0 sq mi)[2] |
| Discharge | |
| • location | Nizhny Novgorod (near mouth) |
| • average | 1,260 m3/s (44,000 cu ft/s) 1,327.15 m3/s (46,868 cu ft/s)[1] |
| Discharge | |
| • location | Ryazan (Basin size: 97,995.8 km2 (37,836.4 sq mi) |
| • average | 585.477 m3/s (20,675.9 cu ft/s)[3] |
| Discharge | |
| • location | Kaluga (Basin size: 54,877.8 km2 (21,188.4 sq mi) |
| • average | 305.042 m3/s (10,772.5 cu ft/s)[4] |
| Basin features | |
| Progression | Volga→ Caspian Sea |
| Tributaries | |
| • left | Moskva, Klyazma |
| • right | Moksha |
The Oka (UK: /ˈɒkə/, US: /ˈoʊkə/; Russian: Ока IPA: [ɐˈka]) is a river in central Russia, the largest right tributary of the Volga. It flows through the regions of Oryol, Tula, Kaluga, Moscow, Ryazan, Vladimir and Nizhny Novgorod and is navigable over a large part of its total length, as far upstream as the town of Kaluga. Its length is 1,500 km (930 mi) and its catchment area 245,000 km2 (95,000 sq mi).[5] The Russian capital Moscow sits on one of the Oka's tributaries—the Moskva, from which the capital's name is thought to be derived.[6][7]
- ^ "Rivers Network". 2020.
- ^ "Rivers Network". 2020.
- ^ "Rivers Network". 2020.
- ^ "Rivers Network". 2020.
- ^ «Река Ока», Russian State Water Registry
- ^ Vasmer, Max (1986–1987) [1950–1958]. "Москва". In Trubachyov, O. N.; Larin, B. O. (eds.). Этимологический словарь русского языка [Russisches etymologisches Wörterbuch] (in Russian) (2nd ed.). Moscow: Progress.
- ^ Smolitskaya, G.P. (2002). Toponimicheskyi slovar' Tsentral'noy Rossii Топонимический словарь Центральной России (in Russian). pp. 211–2017.
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