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

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

A man in a red hat and shirt photographs a friend sitting behind the wheel of a big green John Deer tractor with a large planter behind it

CIROH Water Quality Think Tank participants visit an Iowa farm

Thursday, May 14, 2026
IIHR—Hydroscience and Engineering took about 25 visitors from around the country to visit the Schott Family Farm south of Iowa City. The visitors were participants in the Cooperative Institute for Research to Operations in Hydrology (CIROH) Water Quality Think Tank, held at IIHR in late April and early May.
A white water quality sensor structure in a stream with green grass growing on the banks

UI’s water monitoring to rely on separate funding streams as state support stays dry

Friday, May 8, 2026
The Iowa Legislature went back and forth on funding for water quality during the final days and hours of its 2026 session. Lawmakers approved measures to appropriate $300,000 to the University of Iowa IIHR Hydroscience and Engineering department-run Iowa Water Quality Information System (IWQIS) — then changed the bill to send the money to the Iowa Department of Natural Resources instead.
Water spews out of several white pipes that contain and protect water quality sensors

Iowa Republican senators scrap water sensor funding

Friday, May 8, 2026
Republicans who control the Iowa Senate declined to provide $300,000 to help maintain 60 water quality sensors across Iowa tracking nitrate pollution in our rivers and streams in real time. The sensors are run by the University of Iowa’s IIHR Hydroscience and Engineering.

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...

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