The Missouri does, the Colorado does not. It empties instead into the Sea of Cortez.
The Columbia river
The Mississippi River empties into the Gulf of Mexico, and eventually joins the North Atlantic Ocean.
The source of the Arkansas River is in the Rocky Mountains near Leadville, Colorado. It travels about 1450 miles through Kansas, Oklahoma, and Arkansas where it empties into the Mississippi near Napoleon, Arkansas.
The body of water that the Mississippi River empties into is the Gulf of Mexico.
Gulf of Mexico
Mississippi River. That is the only river that empties into the gulf of Mexico.
The Mississippi River empties into the Gulf of Mexico. http://en.wikipedia.org/wiki/Mississippi_River
The Missouri River empties into the Mississippi River at St. Louis.
The largest river that empties into the Gulf of Mexico is the Mississippi River.
mississippi
It empties into the Gulf of California.