If this thread is revived around the time of the hatch that would help all of us. Does the hatch stagger and end up being a few weeks later as you go north?

What triggers eggs, photoperiod? air temp? water temp?

If folks in IN, OH, or MI see mayflies hatching take a moment and post to remind us and I'll go out and start looking. I'd love to establish a better population. It seems I saw only a few on the water after dark last spring.