State and tribal biologists have upgraded their forecasts slightly for the Columbia River’s summer chinook and sockeye runs.
The Technical Advisory Committee on Monday revised its summer chinook prediction from 77,000 to 80,000. The initial forecast was 91,100.
The sockeye run is anticipated to total 181,500, up from the initial 161,900.
Summer chinook pass through the lower Columbia River from mid-June through July on their way to upstream of Priest Rapids Dam.
Sockeye spawn in the Okanogan and Wenatchee rivers, plus a small number in Snake River tributaries.
