Generation ended on the 19th at midnight. Generation began today at 2:00pm reports from fisherman coming into the shop are that thread midges in olive and red thread with black beads worked best in the slower water. San Juan worms in the ruffles in tan & lt brown were the ticket. If you are fishing the upper end when the water comes on drive to Rim SHoals and you will be at least 5 hours in front of the generation.