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 woman in baseball hat, sunglasses, work boots, and jeans stands in front of a truckload of pipes labeled Methane, Compressed

Understanding wastewater treatment lagoon emissions

Monday, March 30, 2026
Sahar El Abbadi, assistant professor of civil and environmental engineering and IIHR research engineer, studies the greenhouse gases produced by wastewater treatment lagoons.

Recent News

Water quality sensors sheathed in protective white tubes in an iowa stream

Environmental risks at play in Iowa’s cancer crisis

Tuesday, April 14, 2026
Iowa’s second-highest cancer rate in the nation has made scientific water quality data more important than ever. The Iowa Legislature diverted funds for the Iowa Water Quality Information System in 2023. While county governments and other groups have helped fund the system the last few years, IIHR—Hydroscience and Engineering Director Larry Weber is asking lawmakers to reappropriate funds before the end of this year’s session.
Looking down off a bridge at white water quality sensors in a stream

Iowa Must Have Nitrate Water Sensors

Monday, April 13, 2026
Iowa’s real-time nitrate water sensor network is in danger of losing funding on June 30, 2026. But Iowa state legislators have the power to restore its funding this session.
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.

Events

Earth Day Celebration hosted by Hawkeye Area Council, Scouting America promotional image

Earth Day Celebration hosted by Hawkeye Area Council, Scouting America

Saturday, April 18, 2026 1:00pm to 4:00pm
Camp Wakonda, Howard H. Cherry Scout Reservation

You're invited to the 4th annual Earth Day celebration on Saturday, April 18!

Join us on Earth Day for an afternoon of interactive and educational fun! Various organizations will host booths to spread environmental awareness, including the Iowa Flood Center and their watershed model. This free event, hosted at the Howard H. Cherry Scout Reservation, is open to the public and anyone in the Scouting community.

We look forward to seeing you there!

4th Annual Earth Day Celebration at Fairport Fish Hatchery promotional image

4th Annual Earth Day Celebration at Fairport Fish Hatchery

Saturday, April 25, 2026 10:00am to 3:00pm
LACMRERS

Join us for the 4th Annual Earth Day Celebration!

Explore, discover, and win prizes, including events like the Great Hatchery Treasure Hunt! Join us for a family-friendly adventure; follow the trails, explore the grounds, and discover hidden “treasures” inspired by the hatchery’s natural habitats, living waters, and rich history of this unique Mississippi River landmark. Bring your curiosity, enjoy the beauty of the Mississippi River landscape, and see what treasures you uncover!

Baby fish

Live...

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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