Mayflies only hatch in warmer water, so don’t go looking for them in the fall, winter, or early spring. But as spring fades into summer, you’ll want to be on the lookout for one of these hatches.

But don’t worry—this hatch is a good thing! It’s a sign of healthy waters, abundant fish, and thriving ecosystems along the Susquehanna Greenway. A white mayfly.

The Great Lakes region's annual mayfly hatch, when the aquatic insects emerge in their winged form to mate, usually happens in late June to early July. The mayflies have such a short life span in ...

Mayflies are beginning to hatch once again in Michigan. The hatch of mayflies is beginning in the southern part of Michigan, signaling the start of the yearly mayfly hatch. Mayflies are a familiar ...

Oneida Lake’s annual mayfly hatch once looked like scenes from a 1950s B-movie. Each June billions of the bugs would emerge from the muck on the bottom of the lake, shed their skins, and fly ...

The amount of mayflies that hatch and swarm can sometimes be overwhelming. In the past, mayflies have blanketed streets and walls of the Twin Cities with a thick, buggy layer.

The hatch of mayflies is beginning in the southern part of Michigan, signaling the start of the yearly mayfly hatch. Mayflies are a familiar sight near many Michigan lakes when they emerge (or ...

In 2021, a massive hatch in downtown St. Paul blanketed the city's roads and sidewalks. A year later, a hatch near La Crosse, Wisconsin, was so large it showed up on radar.

A Treat for Anglers (and Bass) For smallmouth bass and other fish, the hatch is more than a spectacle—it’s a feast. The Susquehanna Greenway is a favorite destination for anglers, and the ...