EntityQ4521519· pop 6· linked from 5 articlesShachaSign in to saveriver in Ryazan Oblast, RussiaConnectionsRussiaCountryRussianEntityCaspian SeaEntityVolgaEntitygeographic coordinate systemEntityRyazan OblastEntitydrainage basinEntityhydrologyEntityOkaEntityriver mouthEntityMokshaEntityShatskEntityTsnaEntityNuclear Explosions for the National EconomyEntityCategoriesRivers of Ryazan OblastTributaries of the Oka