Surface water temperatures are in the mid 40’s here as well and fishing has been good. Best flies right now are leech or wooly bugger patterns.  Brown Trout may still be targeted at the inlet end of the reservoir but that is ending any day.  Fly rodders will also do well on bead head pheasant tails, wooly buggers, chironomids and parachute Adams.  Spinners, PowerBait, and nightcrawlers will do well for the spincasting crowd.