IIHR—Hydroscience and Engineering is an internationally renowned laboratory where researchers are solving some of our world’s greatest fluids-related challenges. 

Middle Cedar Watershed wetland

Rivers, Watersheds, and the Landscape

IIHR researchers are addressing issues related to sustainability in the water, energy, and food nexus; improving our understanding and adaptation to climate change; increasing community resilience to natural hazards; and helping equip society with the tools to make informed decisions.

Wave Basin

Fluid Mechanics and Structures

Fluid mechanics, the study of fluid behavior at rest and in motion, is at the core of nearly all IIHR research. IIHR uses the basic governing equations of fluid mechanics to investigate a wide range of applications—river flow, atmospheric conditions, renewable energy (e.g., wind and water turbines), ship hydrodynamics, biological systems, and much more. 

Keri Hornbuckle Research Lab

Health and the Environment

Much of IIHR’s research touches all our lives, affecting human health and well-being in meaningful ways. Studies of biofluids, environmental contaminants, vulnerability, and resilience are relevant to each of us. In addition, projects on renewable energy and watersheds help remediate society’s negative environmental impacts, leading to a higher quality, more sustainable life.

Dan Gilles presenting

Information Systems

Beginning with the innovative Iowa Flood Information System (IFIS) in 2011, IIHR has made online public access to research data the standard for its major research initiatives. IIHR has developed online data access systems for water quality information, flood mitigation projects, well-driller information, and more. These platforms provide emergency managers, decision-makers, and the public with accurate and reliable data.

Serving Iowans

From flood to drought, surface water to groundwater, IIHR is helping Iowans understand and manage water resource challenges to ensure a livable and sustainable future. 

Iowa Flood Center

Iowa Geological Survey

Iowa Nutrient Research Center

Iowa INSIGHT

Center for Hydrologic Developement

Research Impact

Flood water covers a roadway with green leafy trees on either side

In a Small Iowa Town, a Solution to a National Crisis

Friday, May 1, 2026
As a new flood season approaches, many Americans remain haunted by the last. But Iowans are fortunate — we have access to the incredible tools developed and maintained by engineers at the state-funded Iowa Flood Center.

Recent News

Dave Cwiertny and Larry Weber talk with the press about Iowa INSIGHT in front of a black and gold IOWA banner

University of Iowa researchers launch project on how environmental exposures affect human health

Wednesday, June 3, 2026
On June 3, University of Iowa researchers announced a new research program focused on understanding how environmental exposures affect human health.
A man in a gray suit speaks while a woman looks on. Both sit in front of a black and gold IOWA banner

University launches research project into Iowa health crisis

Wednesday, June 3, 2026
The University of Iowa announced the launch of a statewide research initiative aimed at understanding how environmental exposures may be causing a range of dire health problems experienced by people around the state.

Events

Discover Your University: IIHR Hydraulic Wind Tunnel Annex promotional image

Discover Your University: IIHR Hydraulic Wind Tunnel Annex

Wednesday, June 17, 2026 11:00am to 12:00pm
Hydraulics Wind Tunnel Annex

Following the devastating 2008 flood, the Iowa Flood Center joined IIHR in 2009 and provides Iowans with critical tools and information to help them understand and mitigate flood risks.

Tour attendees will get a glimpse of IIHR and the Iowa Flood Center's research expertise and breadth by seeing what goes into the fabrication of field monitoring equipment. Participants will also experience interactive demonstrations of research labs solving complex erosion and sedimentation challenges, advancing...

6th Annual BioBlitz at the Ashton Prairie Living Laboratory promotional image

6th Annual BioBlitz at the Ashton Prairie Living Laboratory

Saturday, July 11, 2026 9:00am to 11:00am
Ashton Cross Country Course

What types of plants, animals, and fungal life might you find at the Ashton Prairie Living Laboratory? Let's find out! 

Join researchers in collecting, observing, and recording biodiversity at the Ashton Prairie Living Laboratory in our 6th Annual BioBlitz. Your findings will inform a major research project and will contribute to the fifth data point in a multi-year documentation of how diversity changes at this site over time. Collections will be housed with the UI Museum of Natural History...

Grandparents University®: Discover Your Watershed promotional image

Grandparents University®: Discover Your Watershed

Thursday, July 16, 2026 8:00am to 4:30pm
Hydraulics Wind Tunnel Annex

Hawkeye grandparents and grandchildren, ages 8-14 years old, can experience student life together while taking part in educational, fun, and unique activities.

Explore extreme weather events, particularly flooding, as well as water-quality challenges in Iowa. Design your own watershed systems, experimenting with different materials to discover how to reduce flood impacts and agricultural runoff to protect clean water. By the end, you will better understand how land-use practices impact flooding...

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