The Upa (Russian: Упа́, pronounced [ʊˈpa]) is a river in Tula Oblast, Russia. It is a right‑bank tributary of the Oka River, which in turn flows into the Volga and ultimately the Caspian Sea.
Geography
- Length: 345 km (214 mi)
- Drainage basin: 9,510 km² (3,670 mi²)
- Mouth: Confluence with the Oka River near the settlement of Odoevo, at coordinates 54°02′07″ N 36°20′03″ E.
- Course: The river originates in the eastern part of Tula Oblast, flows northward through the city of Tula—the oblast’s administrative centre—and joins the Oka River downstream.
Tributaries
- Notable right‑hand tributary: the Plava River.
Etymology
The name “Upa” is derived from Baltic hydronyms; it is cognate with the Lithuanian word upė and the Latvian word upe, both meaning “river”. This suggests an ancient Baltic linguistic influence in the region.
Human Use and Significance
The river’s basin supports the city of Tula and surrounding settlements, providing water resources for municipal, industrial, and agricultural purposes. Its historical presence has contributed to the development of the region.
References
Information summarized from the Wikipedia article “Upa (river)”.
