To the OP,
Bill Monroe Sr said on a thread here a decade or more ago to paraphrase:
The amount and intensity of rain that falls in Eugene and Salem has a major impact how long the Willamette will be blown out in Portland.
I’ve benefited from that tip a lot. But again there is a bit of reading the tea leaves on it. Good luck. I’m antsy too.
Just took a peek at the tea leaves...
Portland turbidity is about a day and a half after the river/rain peak at Salem and it's still going up a bit there.
National Weather Service Advanced Hydrologic Prediction Service
Not much, though, and the crest at 12 isn't necessarily too high...However, Salem needs to be about 9 (feet) to get us fishable down here a day and a half later.
The other whoops-factor is the river forecast. It's often a bit inaccurate and can change...without anymore rain in Eugene or the lower valley, we might see some fishable water by the weekend...The forecast right now is spotty.
Gonna stick to coffee instead of tea and hope for the best.