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News Link • Geography

Trace Any U.S. Waterway Upstream, Downstream, Sidestream

•, By Shaunacy Ferro
 Remember this map of all the waterways in the U.S. from earlier this summer? Now there's something even more fun: An interactive app that lets you not only see the waterways, but trace them to their source (or to their end, if it suits you better).

Streamer, a visualization from the National Atlas, shows almost all the streams in the U.S., or at least the ones large enough to see at a one to 1 million scale, meaning each inch of map corresponds to about 15.8 miles of land.

It gives you a look at how far water travels from some sources, and how short a distance another nearby waterway might stretch. There's something especially satisfying about clicking a stream that dumps into a million different veins of water, or shoots its way across multiple states to empty into the ocean. Case in point: Hitting the coronary artery of American waterways, the Mississippi River, illuminates connections over the entirety of the middle of the country:

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