Are you just fishing WA or will you also be heading down to OR? If just WA, then there isn't a lot to look for other than a stretch of water you like. Come down Rattlesnake grade and take a right at the bottom and that road will take you along the river all the way into OR. The main congregation of fisherman will most likely at Cottonwood creek which is the hatchery site. But don't limit yourself to just this area as the whole stretch of river can be good above and below the hatchery. Oh, and don't forget Boggans Oasis, the little store at the bottom of the grade. They used to have great milkshakes there!

Good luck,

Duke