This information is difficult to come by because those that know were generally not told by someone else but instead unlocked the secrets on their own by doing their homework, using lots of gas driving, and hiking a lot. I suggest you buy an Oregon atlas and the Fishing in Oregon book. That's a good starting point. I don't want to come across as being rude, but I don't like giving away "where to fish" information for free that I worked so hard to obtain on my own. Good Luck.