Skip to Content

CNN – Regional

Mayflies hatch, in some places blanketing downtown sidewalks and roads

By WCCO Staff Click here for updates on this story     MINNEAPOLIS (WCCO) — Mayflies covered the sidewalks and just about everything around downtown St. Paul Thursday morning. The Minnesota Department of Natural Resources says the short-lived insects are found in almost all freshwater systems. Mayflies are very sensitive to chemical pollutants and decreased oxygen levels.

Continue Reading
Skip to content