The Upper Sac has been fishing well with flows just about at their summer norm. The Golden Stones are plentiful and fish can be enticed with a big Stimulator …. I always like to add a dropper off of it. With days heating up now you can expect to find fish in the faster water when the sun is high and definitely at the top of runs and pools.
Evenings have been very good for dry fly fishing if you find the right spot. In the mornings I have been finding fish in those shady spots created by the trees and ridges. Nymphing the long deep runs require getting your bugs down, most fish are hugging the bottom, so get the lead out. Hatches right now are Goldens, PMD’s, Pink Cahills, and Caddis.