Map showing drought conditions in the western United States in 2020

Does Less Pollution Mean Less Precipitation?

IIHR researchers Wei Zhang and Gabriele Villarini (IIHR director) have published research linking urban sprawl to an increase in rainfall and flooding during Hurricane Harvey.
Witold Krajewski poses in an IFC polo

Krajewski Elected to National Academy of Engineering

Iowa Flood Center Director Witold Krajewski has been elected to the National Academy of Engineering (NAE), one of the highest honors conferred in the field of engineering.
Aerial photo of a flooded Iowa town

Research Links Climate Change to Flooding in Iowa

IIHR’s Gabriele Villarini and Wei Zhang (now at Utah State) have connected rising levels of greenhouse gases in the atmosphere with Iowa’s more frequent flooding.
Aerial photo of a flooded Iowa town

Massive U.S. flooding linked to climate change-driven weather system