Tyosha

General data
- Water type: River
- Progression: Oka -> Volga -> Caspian Sea -> Planet Earth
- Climates: Continental
- Continents: Europe
- Countries: Russia
Description
The Tyosha (Russian: Тёша) is a river in Nizhny Novgorod Oblast in Russia, a right tributary of the Oka. The length of the river is 311 kilometres. The area of its basin is 7,800 square kilometres. The Tyosha freezes up in November - first half of December and stays icebound until the second half of March - first half of April. Its biggest tributary is the Seryozha. The city of Arzamas is located on the Tyosha.