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 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

Recent News

Hydro Station

Can Crowdfunding Save an Iowa Water Quality Sensor Network?

Monday, October 13, 2025
As researchers race to find a new funding source before money runs out and they're forced to pull the sensors, a nonprofit has launched a crowdsource campaign to try to keep the program afloat.
CIROH 2025

IIHR Joins 2025 CIROH Annual Science Meeting

Wednesday, October 8, 2025
The Cooperative Institute for Research to Operations in Hydrology (CIROH) recently held its 2025 Annual Science Meeting, with the University of Iowa actively participating to share its latest advancements in hydrologic modeling and flood prediction research.
Cedar Bend

[Video] Iowa Geological Survey inspects flood levees in Waterloo and Cedar Falls

Wednesday, October 8, 2025
The Iowa Geological Survey is examining flood levees in the Waterloo and Cedar Falls region as part of a statewide initiative.

Events

Cedar Valley Family STEM Festival promotional image

Cedar Valley Family STEM Festival

Thursday, October 16, 2025 4:00pm to 7:00pm
Wartburg College

Get ready to dive into the thrilling world of STEM with us at our upcoming festival, where the wonders of Science, Technology, Engineering, and Mathematics (STEM) come alive for students and families across Iowa! This vibrant celebration is not just about fun; it's about igniting a passion for learning and discovery in our youth. Explore hands-on activities that spark curiosity, while raising awareness of the importance of STEM-related educational and career opportunities for families. So, come...

Our Water, Our Future: A Look at the Central Iowa Water Quality Report promotional image

Our Water, Our Future: A Look at the Central Iowa Water Quality Report

Wednesday, October 29, 2025 6:00pm to 7:30pm
Big Grove Brewery Iowa City
Join for a public presentation of findings from the Central Iowa Source Water Resource Assessment (CISWRA) report.
From the Driftless to the Delta: Rethinking Water Protections in the Mississippi River Watershed  promotional image

From the Driftless to the Delta: Rethinking Water Protections in the Mississippi River Watershed

Thursday, October 30, 2025 12:30pm to 2:00pm
Boyd Law Building

Join us for a timely panel discussion exploring how states, communities, and advocates are responding to the regulatory and environmental uncertainties left in the wake of the Sackett v. EPA decision. With a focus on wetlands and water protections across the Mississippi River watershed—from the bluffs of the Driftless Region to the bayous of the Delta—this conversation brings together regional experts to highlight innovative legal, policy, and collaborative approaches for safeguarding critical...

View more events