Sura (river)

The Sura (, ) is a river in Russia, a north-flowing right tributary of the Volga. Its mouth on the Volga is about half way between Nizhny Novgorod and Kazan. It flows through Penza Oblast, Mordovia, Ulyanovsk Oblast, Chuvashia and Nizhny Novgorod Oblast. It is long, and has a drainage basin of . It is navigable for 394 km from the mouth.
The city of Penza, and smaller towns Alatyr, Shumerlya, Yadrin lie along the Sura. At the confluence with the Volga there is a settlement of Vasilsursk.
The principal affluents of the Sura are the Penza, the Pyana, and the Alatyr.