Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Ob-Yenisei Canal, also known as Ket-Kas Canal is a disused waterway that connected the basins of the rivers Ob and Yenisei in Siberia. The waterway connected the Ket River, a tributary of the Ob with the Greater Kas River, a tributary of the Yenisei, making use of their tributaries and lakes. The divide between the two river systems (which is also the border between today''s Tomsk Oblast and Krasnoyarsk Krai) is spanned by a hand-dug canal 8 km long, 20 m wide at the bottom, and 2.1 m (7 feet) deep.