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I can't resist looking at the trends of springers on the Willamette. Here's a couple charts for 2001 & 2002. To my eyes, water temp is not the only relevant factor. It appears that yes, you need 53 F at least for the salmon to cross the Falls. However, if the temp drops, even if it stays above 53 F, they stop going over until the temp comes back up. Looking at the flows, they didn't have much impact other than sometimes they would go up and cause temp to go down. My big question is when they stop going over the falls for a couple days, is the bite below turned on or off? And the opposite when they are going over in large numbers? Trust me, I plan on being out there to figure this one out (at least as much as I can get away with :wink: ).





 

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Fi****is,

Cool charts.

Scary part is you could go by just timing though I'm sure the critters use conditions and time to determine when they make a run for it.

Brion
 
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