Michigan State University seems to say the peak season is over a month long with some areas having issues with them through November. Again my personal experiences with them is the bites itch about a week and can easily become infected causing even more problems. Best to wear protective clothing and repellent.
I’m glad they are not typically that bad… wow… in the Boundary Waters Canoe Area they have the
I beg to differ & have spent much time in the U.P. They are bad around Memorial day for about a week & were awful when we built the 1st cabin. They may be there longer but not an issue like the week or so. https://www.visitkeweenaw.com/blog/post/bug-guide-to-the-keweenaw/#:~:text=Black flies come on the,under the brim of hats.
- Black Flies: Small, devious, and the one to watch out for most. Black flies come on the scene in late-May and hang around into July. At their peak in mid-June, these little guys can do some serious damage. They are smaller than mosquitoes yet create itchy welts if allowed to feed. They have a tendency to burrow into hair and often bite under the brim of hats. Black flies fade out quickly and can be found almost everywhere.
agreed… being a backcountry canoe guy your assessment is true.
Now if you were in the far far north… Yukon I’m talking… blackflys are what you breath…
University studies are kids who are not versed on reality yet. Haha!