Erin Sexton, a research scientist at the University of Montana, Flathead Lake Biological Station, delivers a presentation on selenium in Lake Koocanusa on March 12. (Derrick Perkins/The Western News)
March 21, 2022
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March 22, 2022 7 a.m.
Recent data spell trouble for Koocanusa fish
If recent data from peamouth chub and other fish hold valid insight — and at least, biologists in Montana believe they do — selenium levels at Lake Koocanusa reach as high as 250 percent of what’s allowed in Montana waters.