Luzha River is a river

River

A river is a natural watercourse, usually freshwater, flowing towards an ocean, a lake, a sea, or another river. In a few cases, a river simply flows into the ground or dries up completely before reaching another body of water. Small rivers may also be called by several other names, including...

 in Kaluga Oblast

Kaluga Oblast

Kaluga Oblast is a federal subject of Russia . Its administrative center is the city of Kaluga.-Geography:Kaluga Oblast is located in the central part of the East European Plain. The Smolensk Highland lays in the western and north-western part of the oblast, while the Central Russian Highland -...

 in Russia

Russia

Russia or , officially known as both Russia and the Russian Federation , is a country in northern Eurasia. It is a federal semi-presidential republic, comprising 83 federal subjects...

, which originates in Moscow Oblast

Moscow Oblast

Moscow Oblast , or Podmoskovye , is a federal subject of Russia . Its area, at , is relatively small compared to other federal subjects, but it is one of the most densely populated regions in the country and, with the 2010 population of 7,092,941, is the second most populous federal subject...

. It is a right tributary of the Protva River

Protva River

Protva River is a river in Moscow and Kaluga Oblasts in Russia, left tributary of the Oka. The length of the river is 282 km. The area of its basin is 4,620 km². The Protva freezes up in early December and stays icebound until early April. Its main tributary is the Luzha River. The towns of...

 (Oka

Oka River

Oka 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 to the town of Kaluga. Its length exceeds...

's basin). The length of the river is 159 km (98.8 mi). The area of its drainage basin

Drainage basin

A drainage basin is an extent or an area of land where surface water from rain and melting snow or ice converges to a single point, usually the exit of the basin, where the waters join another waterbody, such as a river, lake, reservoir, estuary, wetland, sea, or ocean...

 is 1400 square kilometre. The Luzha freezes up in November (rarely in December) and breaks up in April. The town of Maloyaroslavets

Maloyaroslavets

Maloyaroslavets is a town in Kaluga Oblast, Russia, located on the right bank of the Luzha River , southwest of Moscow and northeast of Kaluga. Population: 21,200 ....

, the site of an important battle

Battle of Maloyaroslavets

The Battle of Maloyaroslavets took place on 24 October 1812, between the Russians, under Marshal Mikhail Illarionovich Kutuzov, and part of the corps of Eugène de Beauharnais, Napoleon's stepson, under General Alexis Joseph Delzons which numbered about 20,000 strong.-Prelude:On 19 October, Napoleon...

 during the French invasion of Russia

French invasion of Russia

The French invasion of Russia of 1812 was a turning point in the Napoleonic Wars. It reduced the French and allied invasion forces to a tiny fraction of their initial strength and triggered a major shift in European politics as it dramatically weakened French hegemony in Europe...

, is located on the Luzha River.