My buddy landed a 45 inch spring tuesday, anyone know how big that is?
Impossible to get an accurate estimation without knowing the girth of the fish (measured around the stomach and over the back of the fish, just in front of the dorsal fin typically).
The formula is generally accepted (length x girthsquared)/750. Some people use the figure of 800, depending on the size of the fish. A "typical" chinook in the ocean will have a girth that is 2/3 of the length, which would give a 45" fish a 30" girth. Using the formula, that would put it at approximately 50 pounds or so.
HOWEVER, that is for an ocean chinook. In the rivers, they will typically have lost a fair amount of girth, and density or mass. So without knowing the girth of this fish (which can vary wildly depending on the actual chinook itself), we'd have to give it a reduced girth in estimation - say 27" or so? I'd put that fish at somewhere just north of 40 pounds... maybe 42 or 43 pounds?
Regardless, beautiful fish!
Tex - landed one he estimated just shy of 50 pounds on the Vedder in 2007, so knows the bigs boys are in there.