I think Bill McMillan wrote an article in "Salmon, Trout, Steelheader" magazine years ago about catching small to medium size

Steelhead on these cold overcast days in the winter in Oregon's rivers on small dry flies. I think he said the mayflies were around a size

18 but he used a #16 Adams dry fly because these fish were not that finicky.


A friend who live on the middle Rogue river reported to me that he fishes BWO emergences on the middle Rogue river in the winter

when the river is in good shape.


We fish the BWO hatches in the winter on the lower American river for small Steelhead for many years. Overcast calm days are best.


I am sure this BWO hatch goes on in many lower elevation rivers in California.


Herb Burton, owner of the Trinity Fly Shop, and friends fish mayfly hatches in the winter on the Trinity river for decades when the river

is in good shape. Up there they get trout and small to medium size Steelhead.



The upper Eel river has mayfly hatches in the winter and spring too.


This is all weather dependent so the rivers are running low and clear for this to happen.