The fork of the McKenzie just below Cougar is a nice stream and doesn't get a lot of attention. I love the whole upper river and think it is a great fishing stream. The trouble is that it is difficult to access without a boat. Another option is fishing the stretch down near Leaburg dam as it gets a lot of planters and has some fair bank access. Also consider going above Cougar and fishing the stream above. Sorry I can't provide more info for you about current conditions. You probably want to call Caddis Fly shop or Home waters in Eugene.