The Upa (, ) is a river in

Tula Oblast Tula Oblast (russian: Ту́льская о́бласть, ''Tulskaya oblast'') is a federal subject (an oblast) of Russia. It is geographically in the European Russia region of the country and is part of the Central Federal District, covering ...

Russia Russia (, , ), or the Russian Federation, is a transcontinental country spanning Eastern Europe and Northern Asia. It is the largest country in the world, with its internationally recognised territory covering , and encompassing one-ei ...

, and one of the main

tributaries A tributary, or affluent, is a stream or river that flows into a larger stream or main stem (or parent) river or a lake. A tributary does not flow directly into a sea or ocean. Tributaries and the main stem river drain the surrounding drain ...

of the

Oka Oka or OKA may refer to: Cars * Oka (automobile), a small car designed by AvtoVAZ and produced by ZMA and SeAZ * OKA 4wd, a large 4-wheel-drive vehicle made in Western Australia by OKA Military * 2B1 Oka, Soviet 420 mm self-propelled mort ...

. The river is long, and has a drainage basin of .«Река УПА»
Russian State Water Registry The city of

Tula Tula may refer to: Geography Antarctica *Tula Mountains * Tula Point India * Tulā, a solar month in the traditional Indian calendar Iran * Tula, Iran, a village in Hormozgan Province Italy * Tula, Sardinia, municipality (''comune'') in the ...

is situated on its banks. The name of the river is of Baltic origin.E.M. Pospelov, ''Geograficheskie nazvaniya mira'' (Moscow: Russkie slovari, 1998), p. 423: "cf. Lithuanian ''ùpė, upìs, upỹs,'' Latvian ''upe'' 'river, stream.'"

References

Rivers of Tula Oblast {{Russia-river-stub