The Dnieper rapids (Ukrainian: Дніпрові пороги, romanized: Dniprovi porohy) also known as cataracts of the Dnieper were the historical rapids on the Dnieper river in Ukraine, caused by outcrops of granites, gneisses and other types of bedrock of the Ukrainian Shield. The rapids began below the present-day city of Dnipro (formerly Kodak Fortress, Yekaterinoslav), where the river turns to the south, and dropped 50 meters in 66 kilometers, ending before the present-day city of Zaporizhzhia (whose name literally means "beyond the rapids").
There were nine major rapids (some sources give a smaller number), about 30–40 smaller rapids and 60 islands and islets. The rapids almost totally obstructed the navigation of the river.
The Dnieper rapids were part of the trade route from the Varangians to the Greeks first mentioned in the Primary Chronicle. The route was probably established in the late eighth and early ninth centuries and gained significant importance from the tenth until the first third of the eleventh century. On the Dnieper the travelers had to portage their ships round seven rapids, where they had to be on guard for Pecheneg nomads.
Nenasytetskyi porih, or Nenasytets (Ukrainian: Ненаситецький поріг, Ненаситець, lit. 'Insatiable' ) or Revuchyi (Ukrainian: Ревучий, lit. 'Roaring' ), the biggest and most dangerous of the rapids, called Peklo (Ukrainian: Пекло, lit. 'Hell' ) by the locals, 2.4 km long and over 1 km wide. Its roaring could be heard several kilometers away.
Lyshnii porih (Ukrainian: Лишній поріг, superfluous). This name is most likely because it was the least dangerous, posing almost no problems for navigation.
^Яворницький Д.І. Дніпрові пороги:Альбом фотогр. з географічно-історич. нарисом — Харків: Перша друкарня держ. видавництва України, 1928. — С. 41.(in Ukrainian)
^Омельченко Г. М. Спогади лоцмана порогів Дніпрових.- Дніпропетровськ: Січ, 1998.(in Ukrainian)
^Russian and the Slavonic Languages, by W. J. Entwistle and A. Morison, publ. Faber & Faber, 1949 & 1969. pp. 172–174.