Many fly fishers will agree that the Wooly Bugger is one of the best patterns on Blue River. Best colors are olive, brown, and black.
Other patterns that work well include the red midge larva, zebra midge, hare's ear nymph, phesant tail nymphs, hare's ear soft hackle, brassies, and copper johns.
When the midges are on fly fishers will want to concentrate on size 20 and 22 midge patterns.