A new online tool released by the Department of the Interior this week allows users to select any major stream and trace it up to its sources or down to its watershed. The above map, exported from the tool, highlights all the major tributaries that feed into the Mississippi River, illustrating the river’s huge catchment area of approximately 1.15 million square miles, or 37 percent of the land area of the continental U.S. Use the tool to see where the streams around you are getting their water (and pollution).
TODAY IN SLATE
Forget Oculus Rift
This $25 cardboard box turns your phone into an incredibly fun virtual reality experience.
The Congressional Republican Digging Through Scientists’ Grant Proposals
The 2014 Kansas City Royals Show the Value of Building a Mediocre Baseball Team
The GOP Won’t Win Any Black Votes With Its New “Willie Horton” Ad
Whole Foods Is Desperate for Customers to Feel Warm and Fuzzy Again
I’m 25. I Have $250.03.
My doctors want me to freeze my eggs.
Smash and Grab
Will competitive Senate contests in Kansas and South Dakota lead to more late-breaking races in future elections?