The Pronya () is a river in the Ryazan and Tula oblasts in Russia. It is a right tributary of the Oka.Проня (река, приток р. Оки), Great Soviet Encyclopedia The length of the river is . The area of its basin is .«Река ПРОНЯ», Russian State Water Registry The river freezes up in late November and stays icebound until early March. The Pronya is navigable in its lower reaches. The town of Mikhaylov is located on the Pronya.
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