I agree with Gus. Basically, any Dry Fly will work. Terrestrials are always great (especially Hoppers with Deer Hair spun bodies). My friend Rick Takahashi (and Jerry Hubka) will be coming out with a book on Terrestrials, which will have many great recipes. Poppers are always great, and Attractor patterns such as Renegades. I also like sub surface, such as my Back Sabbath Black Bead Emerger (used on all Freshwater species). David Whitlock is a big lover of fishing for Gills, and has created many patterns geared for such.