The Hendrickson Hatch is the first major mayfly hatch of significance. It usually arrives around opening day in Northern Michigan. Being a size 12 or 14 it is a big bug that hatches at the beginning of the season. Many times on the Ausable below Mio dam, or the Upper to Lower Manisttee I’ve encountered good hatches and spinner falls during the same float. Getting two bites at the dry fly apple with big fish rising is a great day.This larger morsel brings good fish to the surface! Hendricksons are the first and one of the best.
Like all of our mayflies Hendricksons hatch and spin during the best time of day. In the case of hendricksons most hatches occur mid afternoon (the warmest time of day) however on some rivers there can be a pre-emergence around 11:00 in the morning. This is why Hendricksons have the nickname of the gentlemen’s hatch. You can stay up late playing cards and drinking and still be on the water when the action starts! The spinner fall is usually in the early evening before temps fall to low. The Hendrickson mayfly is one hardy little guy. I’ve seen hatches where I had duns landing in my boat on three inches of snow. Read more