A $2.4 million fish-sorting weir was up and running this week on the Kalama River. The idea is to prevent hatchery fish from mingling with what biologists consider “wild” fish. With the new structure, ...

Many hoses connect to the side of the steeppass fish-sorting system at the Emiquon Preserve near Lewistown on May 17, 2021. Nora Hargett, left, and Stephanie Schmidt, graduate students from the ...