Ever wonder about that foam on rivers? – ADN.com


Having just returned from a river rafting trip on the John Day in Oregon, this thought crossed my mind. And of course, someone has recently written about it on the Internet. Enjoy.

While sitting in the front of a canoe on a twisty Alaska creek, my daughter asked to steer closer to the riverbank. She wanted to grab some suds. There, caught in the elbows of fallen trees, were quivering mounds of white foam.

Foam is floating on most Alaska waterways this summer. Years ago, when I first saw yellowish suds on a creek that ran behind my cabin, I thought of something man-made and nasty spilled upstream. But the Pearl Creek foam and other globs seen far from towns are probably natural.

http://www.adn.com/alaska-news/environment/2016/06/11/ever-wonder-about-that-foam-on-alaskas-rivers-heres-what-it-is/

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