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Ecology and salmon related articles

Spring Chinook Numbers on Snake, Columbia Rivers Improving

by Associated Press
KTVB, May 19, 2018

The daily count surpassed 1,000 this week at Lower Granite Dam,
as the salmon make the journey back to Idaho spawning streams.

Graphic from Fish Passage Center, shows late arrival of this year's Chinook migrating up over Lower Granite Dam (2018) along with the 10-year average. LEWISTON -- Spring chinook counts in the Snake and Columbia rivers are improving after a late start to this year's run.

But The Lewiston Tribune reports that fishery managers in Idaho, Oregon and Washington are still unsure how strong the final run will be.

Flows on the lower Columbia River have surged in recent weeks and may be the reason for a dip in the number of chinook passing Bonneville Dam.

This week, 1,160 adult chinook were counted at Lower Granite Dam on the Snake River, the first day in which the daily count surpassed 1,000.

At Bonneville Dam on the Columbia River, the daily count was more than 4,500. It's been higher, but marks a recovery from last week's dip, which saw a low of 852.

Related Pages:
Fisheries Managers Forecast 'Unprecedentedly Low' Summer Steelhead by George Plaven, East Oregonian, 5/22/17


Associated Press
Spring Chinook Numbers on Snake, Columbia Rivers Improving
KTVB, May 19, 2018

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