Nelson–Saskatchewan is the 3rd largest river by drainage area in North America at 1,093,000 km2.
Draining from an area as wide as 1,093,000 km2 in Canada and United States, Nelson–Saskatchewan has a length of 2,570 kilometers (1,597 miles).
The average volume of water flow is 2,575 m3/3 and the river flows out into Hudson Bay.
Compare Nelson–Saskatchewan with Upper Mississippi from North America.