Why is this information important?
Large emergences of mayflies can number in the millions - enough to be picked up by weather radar!

Your observations of mayflies will help:
  • Researchers and natural resource managers to learn about local water quality conditions, as mayflies are indicators of good water quality over the past year
  • Highway maintenance officials to mitigate hazardous driving conditions that can quickly develop when mayflies accumulate on bridges

Check out this great video about the 24-hour cycle of the mayfly from Nat Geo Wild .