You will want to fish for them starting at the mouth all the way up stopping by Dabney, Oxbow and Dodge parks(and any unprivate land you can find) In my opinion. Cedar creek hatchery during coho season becomes battlezone central and unless you are into that type of fishing it can be a bit overcrowded. I have had all my luck @ Oxbow w/coho, but those other place I mentioned produce good numbers too.