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

About IIHR
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 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

Job opportunities at IIHR

Recent News

IGS 10 year celebration photo with Keith Schilling, Larry Weber, and Dean McKenna

Geological Survey celebrates 10 years at the University of Iowa

Wednesday, June 25, 2025
The Gazette, TNS
Over the course of the Iowa Geological Survey’s life at the University of Iowa, it has worked on nearly 200 research projects related to the state’s geology and water resources. The survey came to the UI in 2014 after initially living as a bureau within the Iowa Department of Natural Resources. Since then, it has worked on 186 projects that have taken its researchers to nearly every county in the state.

Central Iowa Water Works reveals how it will address high nitrate levels in the future

Thursday, June 19, 2025
KCII
As the nitrate removal facility at Des Moines Water Works continues to be in operation, Central Iowa Water Works (CIWW) is sharing its plan to build and expand operations in the future.
a woman pouring a cup of water into a plastic bottle for testing

Iowa City-area mobile home park faces uncertainty about drinking water after tests show high levels of manganese

Thursday, June 19, 2025
The Gazette, TNS
Residents of Lake Ridge Estates, a mobile home park just south of Iowa City, last week found a 24-pack of bottled water and a notice at their front doors that their water has tested high for both manganese and arsenic.
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Events

5th Annual BioBlitz at the Ashton Prairie Living Laboratory promotional image

5th Annual BioBlitz at the Ashton Prairie Living Laboratory

Saturday, July 12, 2025 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 5th 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...
Applied Hydraulics at IIHR: Stormwater Diversion and Drop Structure Design for Ellicott City promotional image

Applied Hydraulics at IIHR: Stormwater Diversion and Drop Structure Design for Ellicott City

Wednesday, July 16, 2025 12:00pm to 1:00pm
Virtual
IIHR—Hydroscience and Engineering at the University of Iowa is the oldest academic research center in the United States focused on hydraulic engineering and fluid mechanics. With over a century of experience, IIHR has played a key role in advancing the science and application of hydraulics in major civil infrastructure projects worldwide. This webinar will provide a brief overview of IIHR’s research mission, technical capabilities, and areas of collaboration, followed by a focused look at our...
Okoboji Blue Water Festival promotional image

Okoboji Blue Water Festival

Saturday, August 9, 2025 (all day)
Arnolds Park
The Okoboji Blue Water Festival was founded in 2016 as a venue to promote clean water and other natural resources advocacy in the Iowa Great Lakes. The festival has grown exponentially each year and is now regarded as the premier water quality event in Iowa. There will be activities for kids, fishing seminars and keynote speakers, and exhibitors, including IIHR. The Okoboji Blue Water Festival supports the stewardship of clean water and other natural resources through participation, education...
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