Science & EnvironmentChinook salmon found naturally hatching in Upper Klamath River for first time in a centuryBy Justin Higginbottom (Jefferson Public Radio)March 25, 2026 6:13 p.m.The Klamath Tribes are celebrating evidence of Chinook salmon spawning in Klamath River tributary.📨 Daily news in your inboxSign up today for OPB’s “First Look” – your daily guide to the most important news and culture stories from around the Northwest.EmailPlease leave this field blankSign up