science environmentThe Best River Hangouts In Oregon And Southwest WashingtonBy John Rosman (OPB)Aug. 1, 2015 1 p.m.THANKS TO OUR SPONSOR:Become a SponsorTHANKS TO OUR SPONSOR:Become a SponsorTHANKS TO OUR SPONSOR:Become a SponsorOPB’s First Look newsletterSign up to get important news and culture from around the Northwest, delivered to your inbox six days a week.EmailPlease leave this field blankSign Up