IISG in the news: How a river went from diversity to dumpsite

Posted July 15th, 2010 in Great Lakes Cleanup, News

Leslie Dorworth, IISG aquatic ecology specialist has written several articles for Grist magazine about the Grand Calumet River. This one describes how things got so bad for this polluted waterway:

The Grand Calumet River is about 13 miles long and flows through one of the most industrialized areas in the United States. At one time, the river’s branches and tributaries flowed throughout northwest Indiana and supported globally unique fish and wildlife. Today, thanks to being moved and manipulated by humans over the years, the Calumet river system is one of the smallest watersheds in the region, and there are stretches of river that support nothing but sludge worms.

How did this happen? Two words: people and industry. Read more.

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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 Room

Come curious and ready to test your Great Lakes knowledge!

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Open post by ilinseagrant with ID 18131013136535442
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

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Open post by ilinseagrant with ID 18072583901167383
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)

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Open post by ilinseagrant with ID 17873389053437520
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)