American Rivers: New Web Project Traces Every Waterway in Contiguous U.S.
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Calling all river-lovers and map enthusiasts! A new web project called River Runner, created by data analyst Sam Learner, allows you to follow the path of a raindrop anywhere in the contiguous United States. Using data from the United States Geological Survey, Learner mapped the flow of water throughout all 48 adjoining states. Just click on any spot on the map to create your raindrop and watch it flow downstream.