1. Fact: It takes a drop of water 90 days to travel the entire Mississippi River. Flowing approximately 2,340 miles, the Mississippi River is the fourth largest in the world, behind the Yangtze, Amazon and Nile rivers (when combined with its tributary, the Missouri River). With speeds varying from 1.2 mph to 3 mph, one drop of water takes approximately 90 days to travel its entire length, as estimated by the National Park Service. Did you know this?
