Chart: The 7,000 Streams that Become the Mississippi River

Trace any US stream from its source to its watershed using a new online tool from the Department of the Interior. The online magazine, Slate, posted the story and link to the map. The map above  shows all the major tributaries that feed into the Mississippi River. The online tool allows you zoom in on any major river (using the shift key and your mouse), and follow it.  It also allows you to identify longitude and latitude at any point along the river. You can trace upstream or down stream and you can even print maps.