At long last, coho salmon making return to northeastern Oregon river

The fish, raised by state wildlife officials in a hatchery outside Portland, were trucked 300 miles inland in nine water tanker trucks equipped with highly sensitive oxygen and temperature sensors and a bubbling system that mimics a river’s current. Now in the Lostine River, they must turn around and swim 600 miles to the Pacific Ocean over the next month and then swim home after a year and a half in the Pacific Ocean feeding and growing.

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