With its 3.2 million square kilometers (1,245,000 square miles) in area, the Mississippi Watershed is the largest drainage basin in North America, as evidenced below. Yes, the Mississippi Basin is really that big. So big, actually, that it covers almost half of the USA’s continental landmass! (40%, to be precise) The Mississippi River watershed is the 4th largest in the … [Read more...] about Here’s How Huge the Mississippi River Basin Actually Is