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Chinook- River Mill tail-race, Clackamas River, Oregon; 1938-06-28
2017-09-21
2003-01-01
All artificial spawning of Salmon is conducted at Leavenworth Station, and Koester estimates that they handle on average 40 million eggs each year. One of the most interesting aspects of construction of the fish hatchery was the 2,500 foot rock...
2017-09-21
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