The Brown mayfly begins hatching when the water temperature hits about 42 degrees which coincidentally happens around the end of March in northern climates, hence the name. The hatch is usually in the afternoon, and a spinner fall occurs later on that day. Being the first large mayfly hatch of the year, trout feed voraciously on this hatch coming clear out of the water for your offering! The Western March Brown fly pattern imitates this adult mayfly very well. These are generally big mayflies, not your BWO.
Sidebar