If you are there after the bulk of the runoff, there is some decent dry fly fishing on the Similkameen, mostly between Princeton and the Bromley Rock picnic site. There are no Large fish in the system, and the average size will likely be under 12" but there are lots of fish in the system.....Sometimes you have to look hard....Others have fished the areas around Kerameos and had some success...I have fished a worm under a bobber as recently as two years ago and did very well just west of Kerameos, below Stemwinder campground....Very small dick nites and spinners work as well.......The. Tulameen does not harbor many fish and can be very unproductive.....If you go north from Princeton, there are a lot of lakes with excellent fishing in June/July and can be accessed via car without problem, however, you need a boat of some kind.........Ortho 8)