The Yenisei is the largest river system flowing to the Arctic Ocean. It is the central of the three great Siberian rivers that flow into the Arctic Ocean (the other two being the Ob and the Lena). Rising in Mongolia, it follows a northerly course to the Yenisei Gulf in the Kara Sea, draining a large part of central Siberia, the longest stream following the Yenisei-Angara-Selenga-Ider river system.
Yenisei River runs through central Russia, assuming that it is conditionally divides West and East Siberia. Yenisei River is historic, also called the "Great River". River system, which it forms is the largest flowing into the North Atlantic glacier. Yenisei is considered the second largest river in Russia, the fourth longest river in Asia and seventh on the entire planet.