Duct - the right sleeve of the Kuban River hydroelectric Fedorovsk (farm Tihovsky) to the Sea of Azov (s Achuevo). Separates from Slavic region Krasnoarmeiskii and Primorsko-Akhtarsk. The length of 140 km. The river is navigable throughout, but in this capacity is hardly ever used. Because the river is an active water withdrawals for irrigation systems, rice Slavic and Krasnoarmeiskii areas, as well as for desalination smooth (estuaries).

   Formerly known as "Kara-Kuban" (Black Kuban), "Kumle Kuban", "Black duct" and finally just duct. On behalf of the river called the railway station in the city Protoka Slavyansk-on-Kuban.

   Cities and towns along the left bank: Farms Serbina, city Slavyansk-on-Kuban, pos. Radgospnyi, pos. Coastal, pos. Garden, Farm Baranikovsky, Neschadimovsky, Water, Pogorelovo, Galitsyn, Krasnoarmeysky town Zaboysky, Derevyankovka, villages Blue Niwa and Achuevo. On the right: Farm Tihovsky, Korzhevsky, Turka, Cigrina, Krizhanovskii, Trudobelikovsky, Protichka, Prototsky, village Cheburgolskaya and Grivenskaya.