American Beech

The Tyosha (Russian: Тёша) is a river in Nizhny Novgorod Oblast in Russia, a right tributary of the Oka.^[1] The length of the river is 311 kilometres (193 mi). The area of its basin is 7,800 square kilometres (3,000 sq mi).^[2] 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.

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