. "The River Mississippi - Missouri is 3,902 miles (6,275 km) long. It has an average discharge of 16,200 m\u00B3/s and a drainage area of 2,980,000 km\u00B2. It flows into the Gulf of Mexico. The countries within its drainage basin are: United States (98.5%), Canada (1.5%)"@en . . "The River Mississippi - Missouri is 3,902 miles (6,275 km) long. It has an average discharge of 16,200 m\u00B3/s and a drainage area of 2,980,000 km\u00B2. It flows into the Gulf of Mexico. The countries within its drainage basin are: United States (98.5%), Canada (1.5%)"@en . "How long is the River Mississippi - Missouri"@en . . .