BOISE, Idaho - Fishery managers in the Northwest predicted that 88,000 spring chinook would swim upstream past Bonneville Dam on the Columbia River this year, but fewer than 20 percent of that number have done so late in the season. The spawning run "is very late, and we really don't have a good explanation why," said Cindy LeFleur, a policy coordinator for the Columbia River Compact with the Washington Department of Fish and Wildlife. "It could be less than we predicted."
As of Friday, only about 15,500 spring chinook had gone past the dam. The 10-year average is about 112,000 past the dam for this time of year.
A new prediction on this year's run will be made Monday when managers meet to look at fish counts. Managers say they need to see the peak of the run going past the dam before they can make a good prediction about its size.
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By Friday, only 18 spring chinook had gone past Lower Granite Dam — the uppermost of the eight dams between the Pacific Ocean and Idaho by way of the Columbia and Snake rivers. The 10-year average for this time of year is about 18,000 fish.
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