These are the rivers with the largest drainage areas in the Asia. A drainage area is any area of land where precipitation collects and drains off into a common outlet, such as into a river, bay, or other body of water.
The Ob-Irtysh river system receives inflows from the largest drainage area at 2,990,000 km2. At second, the Yenisei–Angara–Selenge–Ider river system drains from an area as wide as 2,580,000 km2 and outflows to the Kara Sea in Siberia, Russia.
More lists on the world's longest and largest river systems: