What is the longest river in the United States?

mibmob

mississippi Aug 25 02, 6:57 PM

Gnomon

Gnomon says: Mississippi/Missouri. The Mississippi on its own is not the longest. The normal naming convention for rivers is that the longest tributary is called the name of the river where it flows into the sea. This is not true in the case of the Mississippi, because the people who named it didn't know at the time where the source of the Missouri was. Sun Aug 25 17:40:41 CDT 2002 (Delete Entry) The longest river in the United States is the Mississippi/Missouri/Red Rock, starting at the source of the Red Rock, flowing into the Missouri, then into the Mississippi and then into the sea. As far as I know, this is entirely within the United States. It is 3,872 miles long and is the third longest river in the world, after the Nile and the Amazon. Mon Aug 26 16:58:14 CDT 2002 (Delete Entry) (Reposted as one entry - McG) Sep 03 02, 8:34 AM