Moscow River
Coordinates: 55°05′N 38°50′E / 55.083°N 38.833°E
The Moskva River (Russian: река Москва, Москва-река, Moskva-reka) is a river of western Russia. It rises about 140 km (90 mi) west of Moscow, and flows roughly east through the Smolensk and Moscow Oblasts, passing through central Moscow. About 110 km (70 mi) south east of Moscow, at the city of Kolomna, it flows into the Oka River, itself a tributary of the Volga, which ultimately flows into the Caspian Sea.
Moskva and Moscow are two different renderings of the same Russian word Москва. The city is named after the river. The origin of the name is unknown, although several theories exist.
The river is 503 km (313 mi) long, with a vertical drop of 155 m (509 ft) (long-term average). The area of its drainage basin is 17,600 km2 (6,800 sq mi). The maximum depth is 3 metres above Moscow city limits, and up to 6 metres below it. Normally, it freezes in November–December and begins to thaw around late March. In Moscow, the river freezes occasionally; during an unusually warm winter in 2006–2007, ice began melting on January 25. The absolute water level in downtown Moscow is 120.0 metres above sea level (long-term average of summer lows after World War II); a historical maximum of 127.25 metres above sea level was set by the 1908 flood.
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