Tyosha

{{Infobox river

| name = Tyosha

| native_name ={{native name|ru|Тёша}}

| image = Tyosha river.jpg

| image_caption =

| subdivision_type1 = Country

| subdivision_name1 = Russia

| length = {{convert|311|km|abbr=on}}

| source1_location =

| source1_elevation =

| source1_coordinates =

| mouth = Oka

| mouth_elevation =

| mouth_coordinates = {{coord|55|38|03|N|42|08|51|E|source:kolossus-ruwiki|display=it}}

| discharge1_avg =

| progression = {{ROka}}

| basin_size = {{convert|7800|km2|sqmi|abbr=on}}

| tributaries_left =

| tributaries_right =

}}

The Tyosha ({{langx|ru|Тёша}}) is a river in Nizhny Novgorod Oblast in Russia, a right tributary of the Oka.[http://bse.sci-lib.com/article110432.html Тёша (река)], Great Soviet Encyclopedia The length of the river is {{convert|311|km}}. The area of its basin is {{convert|7800|km2}}.[http://textual.ru/gvr/index.php?card=179296 «Река ТЕША»], Russian State Water Registry 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.