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

Center for Hydrologic Development

Faculty Excellence

A smiling man in white shirt and tie works at a desk with windows in the background.

Weber honored with prestigious Hancher-Finkbine Medallion

Tuesday, April 7, 2026
On April 7, the University of Iowa presented Larry Weber with its most prestigious honor, the Hancher-Finkbine Medallion.

Research Impact

A road closed sign and orange barricade block off a flooded street

The challenges and rewards of flash flood forecasting

Monday, April 20, 2026
Humberto Vergara has long dreamed of bringing reliable flash flood forecasting to countries around the world. Now he and his team are beginning to make that a reality, thanks to a major grant from the World Meteorological Organization.

Recent News

View of a water quality sensor from the stream bank, Three white pipes protect the instruments

These two water monitoring programs are not the same

Monday, April 27, 2026
It’s extremely important for Iowans to have the best possible data measuring the amount of nitrate in our drinking water. If the Iowa Legislature does not restore funding for IIHR’s water quality sensor network, many of the sensors may need to be removed or discontinued, putting Iowans at risk.
Water spews out of several white pipes that contain and protect water quality sensors

Iowa has a fever. We’re about to throw out the thermometer.

Thursday, April 23, 2026
Three Iowa farmers share their opinion on why the Iowa Water Quality Information System (IWQIS), a network of real-time sensors that measure nitrate and other indicators in streams across Iowa, is essential for Iowans and the state.
A smiling young boy pulls back his hair to reveal a tiny frog on his forehead

Muscatine Fifth Graders Explore Nature, Have Fun at LACMRERS

Tuesday, April 21, 2026
On April 14 and 15, IIHR—Hydroscience and Engineering hosted two days of learning for Muscatine fifth graders at the Lucille A. Carver Mississippi Riverside Environmental Research Station.

Events

Discover Your University: James Street Labratory  promotional image

Discover Your University: James Street Labratory

Tuesday, May 19, 2026 10:30am to 11:30am
James Street Laboratory

IIHR—Hydroscience and Engineering’s James Street Laboratory provides 17,000 square feet for the construction of large hydraulic models.

Tour attendees will explore the capabilities of this impressive space through a working model of the Newtown Creek wastewater management system. Located in Brooklyn, New York, Newtown Creek frequently experiences flooding from wastewater backups even during light rainfall. IIHR is leading efforts to design a new system that addresses these challenges.

Join us on...

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...

View more events