river
A river is a natural stream of fresh water that flows on land or inside Subterranean river, caves towards another body of water at a lower elevation, such as an ocean, lake, or another river. A river may run dry before reaching the end of ...
in the
Ryazan
Ryazan (, ; also Riazan) is the largest types of inhabited localities in Russia, city and administrative center of Ryazan Oblast, Russia. The city is located on the banks of the Oka River in Central Russia, southeast of Moscow. As of the 2010 C ...
Russia
Russia, or the Russian Federation, is a country spanning Eastern Europe and North Asia. It is the list of countries and dependencies by area, largest country in the world, and extends across Time in Russia, eleven time zones, sharing Borders ...
. It is a right
tributary
A tributary, or an ''affluent'', is a stream or river that flows into a larger stream (''main stem'' or ''"parent"''), river, or a lake. A tributary does not flow directly into a sea or ocean. Tributaries, and the main stem river into which they ...
Great Soviet Encyclopedia
The ''Great Soviet Encyclopedia'' (GSE; , ''BSE'') is one of the largest Russian-language encyclopedias, published in the Soviet Union from 1926 to 1990. After 2002, the encyclopedia's data was partially included into the later ''Great Russian Enc ...
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
A body of water, such as a river, canal or lake, is navigable if it is deep, wide and calm enough for a water vessel (e.g. boats) to pass safely. Navigability is also referred to in the broader context of a body of water having sufficient under ...
in its lower reaches. The town of Mikhaylov is located on the Pronya.