Cheremosh is a river in the Ukrainian Carpathians, the largest tributary of the Prut. Length - 80 km (50 mi). Formed by the confluence of the White Cheremosh and Black Cheremosh near Usteriky village (Ivano-Frankivsk region). Flows on the border of Ivano-Frankivsk and Chernivtsi regions into the Prut near the village Nepolokivtsi (Chernivtsi region).
In the upper half Cheremosh is mountain-like river: within 33 km (20 mi) it flows in a narrow valley of Pokutsko-Bukovina Carpathians with steep banks covered with forests. Water bed is winding, 15 m (50 ft) wide. After reaching the Carpathian Foothills the river floats through a wide valley, has a low, flat, terraced banks and many distributaries, which change their places after every flood. Width (including islands and straits) - from 70 to 500 m (77-547 yards). In spring and early summer Cheremosh has rapid flooding from snow melting in the mountains. The water level may rise to 2 m (6.5 ft).
River banks are forested, in the mountains – spruce-fir forests, in the valley – deciduous trees. Floodplain is overgrown with willow and other shrubs.
Within the river there are Cheremosky ichthyological reserve and Cheremosky national nature park.