There's lots of action down there on small midge patterns, streamers and some dry/dropper rigs as well. The Nevada side is also fishing really well and is a good alternative if the California side is too crowded. There are lots of fish being landed that are over 20 inches lately as well. Fly patterns that have been working include zuddlers, sculpzilla, zonker, double bunny, wd-40, silver streak, ice nymph, pheasant tail, prince, zebra midge, chubby chernobyl and madam-x.