. . "How long is the Nelson - Saskatchewan River"@en . "The Nelson - Saskatchewan River is 1,597 miles (2,570 km) long. It has an average discharge of 2,575 m\u00B3/s and a drainage area of 1,093,000 km\u00B2. It flows into the Hudson Bay. The countries within its drainage basin are: Canada, United States"@en . . "The Nelson - Saskatchewan River is 1,597 miles (2,570 km) long. It has an average discharge of 2,575 m\u00B3/s and a drainage area of 1,093,000 km\u00B2. It flows into the Hudson Bay. The countries within its drainage basin are: Canada, United States"@en .