Little Lava Lake and Lava Lake are both seeing good callibaetis hatches! Pre hatch nymph action on a sinking line or under an indicator is pretty darn effective. Our CB Cate is my favorite for sure. When the hatch progresses, emergers like a captive dun, brooks sprout, film critic and timberline emerger are my go to flies. For the dun a parachute like a purple haze, extended body and comparadun are good, and add a spinner like the Gallop’s bent spinner and a cdc biot body spinner. 
Leeches and damsels are in the mix and for sure beetles and the flag ant are great, especially after the hatch is over and the fish are still looking up in the afternoon.