Olonka is a river in the Republic of Karelia

Republic of Karelia

The Republic of Karelia is a federal subject of Russia .-Geography:The republic is located in the northwestern part of Russia, taking intervening position between the basins of White and Baltic seas...

, 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...

. It gave the name to the town of Olonets

Olonets

Olonets is a town and the administrative center of Olonetsky District of the Republic of Karelia, Russia, situated on the Olonka River, to the east from Lake Ladoga. Population: -History:...

 by the river and eventuallty to the surrounding territory (Olonets Governorate

Olonets Governorate

The Olonets Governorate or Government of Olonets was a guberniya of north-western Imperial Russia, extending from Lake Ladoga almost to the White Sea, bounded W. by Finland, N. and E. by Arkhangelsk and Vologda, and S. by Novgorod and St. Petersburg...

, Olonets Krai

Krai

Krai or kray was a type of an administrative division in the Russian Empire and the Russian SFSR, and is one of the types of the federal subjects of modern Russia ....

, now Olonetsky District).

The 1906 Russian Brockhaus and Efron Encyclopedic Dictionary writes that Olonka flows from Lake Topornoye, through lakes Vagvozero, Utozero and Torosozero, and eventually to Lake Ladoga

Lake Ladoga

Lake Ladoga is a freshwater lake located in the Republic of Karelia and Leningrad Oblast in northwestern Russia, not far from Saint Petersburg. It is the largest lake in Europe, and the 14th largest lake by area in the world.-Geography:...

. In modern topographical maps of the area the flow between Topornoye and Utozero is referred to as River Topornaya (Река Топорная) The highest point of this drainage chain is Kaskozero, which overspills into Lake Pyyre Järvi (Pyureyarvi, Пюреярви), which is connected by a shallow creek

Stream

A stream is a body of water with a current, confined within a bed and stream banks. Depending on its locale or certain characteristics, a stream may be referred to as a branch, brook, beck, burn, creek, "crick", gill , kill, lick, rill, river, syke, bayou, rivulet, streamage, wash, run or...

 to Topornoye.

Most important tributaries are Megrega (by Olonets) and Tuksa rivers.