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I know callibaetis live in lakes but do they also live in rivers?
I was fishing at the mouth of a medium sized river flowing into Lake Superior. The current is slower and the bottom changes from fist sized rock to silty sand.
At dusk a hatch started that looked remarkably like a speckled dun to my untrained eye.
Yes, Callibaetis can and do live in the slower parts of streams, particularly those with steady, consistent flows. Some spring creeks, for instance, have large Callibaetis populations.
I've seen callibaetis around the lower Gallatin River. There is the tiny chance that they blew in from a nearby stillwater, but I highly doubt it.
My favorite spring creek has a reliable hatch of Callibaetis every year.
Kelly.
Callis will live in slower water. The time of day seems suspect though. The hatch here is usually mid morning.
Daily timing of Callibaetis hatches can vary quite a bit from locale to locale. The hatch on one of Washington state's most famous Callibaetis lakes can come off anywhere from 11:00 in the morning to 1:00 in the afternoon or even later. In some other lakes late afternoon or evening produces the most action.
Yup, I've seen em on The North Umpqua. Big buggers.
Gary
Yes, in the slower pools you will often find them.