Oh, No, The Jacks Are At It Again

Remember that whole off-the-chart jack Chinook run this spring on the Columbia?

Not to be outdone, fall’s jack kings are running up the count at Bonneville Dam as well.

“The total jack return is already the second highest since at least 1990,” a fact sheet released by Washington and Oregon salmon managers minutes ago reads. “The cumulative jack count to date is over twice as high as any cumulative jack count to date since at least 1990.”

The counts at Bonneville through September 9 is 67,831.

The ten-year average for August 1 through that same date? Just over 17,150.

“A record daily jack count of 4,293 occurred on September 9,” managers add.

This spring, nearly 82,000 jacks returned, more than three times the previous record.

So what the heck does it mean?

For starters, it means that a lot of Spring Creek fall tules, Bonneville Pool and upriver brights went out as 2-year-olds and found pretty good ocean conditions, says Pacific States Marine Fisheries Commission supervisory biologist Joe Hymer in Vancouver.

So good that some of those jacks caught in the Lower Columbia in the past month and a half were the size of small adults rather than 3-year-old salmon.

And how about next year? What might this surge of jacks mean for 2010’s URB run?

While high returns of springer jacks have not neccesarily meant strong adult returns the following season in recent years, fall jack returns are more reliable for plugging into jacks vs. adult return prediction models, Hymer says.

Stay tuned.

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