For over 35 years, Illinois-Indiana Sea Grant (IISG) has been working to foster a healthy environment and economy in the southern Lake Michigan region. We have a long record of leading research, outreach, and education in areas such as aquatic invasive species and pollution prevention. We have developed decision tools for communities and their residents, helped communities adopt green infrastructure to reduce stormwater runoff, and have helped bring the Great Lakes to students.

We did this work with the support and collaboration of our partners. IISG is administratively housed in and shares positions with University of Illinois Extension, Purdue Extension, and the Purdue University Department of Forestry and Natural Resources. We share positions with the University of Illinois Prairie Research Institute, Midwest Regional Climate Center, Illinois Water Resources Center, and Purdue University Northwest.

The U.S. EPA Great Lakes National Program Office provides support, with assistance from the U.S. Geological Survey, for our specialists and educators who help bring EPA science to the public. The Chicago Metropolitan Agency for Planning, Chicago Botanic Garden, McHenry County Extension, and Loyola University Chicago provide office space and administrative support for our specialists as well. Our successes would not be possible without these and many other partners.

In recent years, our impacts include supporting quagga mussel research that led to a $1 million in new federal funding, informing water supply planning in the greater Chicago region, and supporting medicine collection programs as they reach a significant milestone.

We look forward to carrying on with our long-term projects addressing critical coastal issues. As IISG moves forward with new faces and ideas, we are poised to tackle emerging issues and opportunities in the region.

Tomas Höök
Director, Illinois-Indiana Sea Grant

 


Illinois-Indiana Sea Grant is a part of University of Illinois Extension and Purdue Extension.

IISG Instagram

Celebrate Earth Day with freshwater science and good conversation! Join Illinois-Indiana Sea Grant, the Northwestern Center for Water, Loyola University researcher Tim Hoellein, and IISG’s Sarah Zack for Science Sips: Trash Talk about Chicago Waterways. Learn what research reveals about litter and trash in Lake Michigan and Chicago waterways and what we can do to help.Plus, enjoy Great Lakes trivia games!📅 April 22, 2026⏰ 7–9 PM📍 Sketchbook Brewing Company, Evanston Tap RoomCome curious and ready to test your Great Lakes knowledge!
Find us at Chicago Comic & Entertainment Expo, March 27–29! We’re linking Subnautica with Great Lakes science through fun, hands‑on activities about food webs, invasive species, and aquaponics.Come geek out with us! 🔗 in bio for event info
Coastal protection is not limited to concrete, rocks, and steel. Coastal protection solutions exist on a spectrum, ranging from softer “green” solutions to harder “gray” structures.Nature-based coastal solutions fall between green and gray techniques, providing multiple benefits to people and habitats.Our three-part video series, Nature-Based Coastal Solutions in the Great Lakes, is now available to watch. Learn how nature-based coastal solutions, including nature-driven and hybrid approaches, can protect shorelines while supporting ecosystems and communities.Watch the 3-part video series at the link in bio.(Photo credit: Liz Spitzer, Illinois State Geological Survey, Coastal Research Group)