Mini heat wave in July triggers king salmon die-off in Blind Slough, emergency rescue effort by hatchery team

Hatchery managers had hoped that June's steady rainfall would spare them from having to intervene in this year's king salmon run, allowing fish to reach Crystal Lake Hatchery naturally without the stress of human handling.

Those hopes evaporated in late July when a few hot days right at the wrong time caused a significant mortality event for king salmon transiting the shallow waters between Blind River Rapids and Crystal Lake Hatchery.

On July 20, after observing a hundred or more king salmon dead in the slough's shallow pools, hatchery staff with help from the Forest Service, Fish and Game an...

 
 

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