Take a tour of the ribbons of rivers that crisscross the U.S. and deliver drinking water to over 117 million people every day. Learn how the physical, chemical, and biological systems within watersheds collaborate to create a continuum of resilient interconnected ecosystems. Find out how watersheds spiral nutrients in and out of the river basin, feeding a vast food web in the process.

https://www.youtube.com/watch?v=dDnk0PEo98k