We're Back! - KWWL - Eastern Iowa Breaking News, Weather, Closings

We're Back!


DUBUQUE (KWWL) - Last year, the fish fly invasion came late, but that's not the case this time around.

People in Dubuque spent Thursday morning cleaning up the dead insects using brooms, rakes and leaf blowers. The mayflies, or "fish flies," as they're known, swarmed the downtown area near the Mississippi River.

The Iowa DNR says the mayfly nymphs live in the river before turning into adults. Once out of the river, the flies live for only a matter of hours. The adults do not eat, they only mate, lay eggs and die.

The blizzard of bugs happens every year and it indicates the river is healthy and clean.

Online Producer: Maria Magner


Powered by Frankly