The Grand Calumet River in northwest Indiana, abused from centuries of industrial contamination, celebrated a triumphant milestone in October.
 
Volunteers, environmental organizers, and local, state, and federal politicians gathered to admire the incredible transformation of a river that was once drained of its ecological significance.
 
IISG Environmental Social Scientist Caitie Nigrelli who led an outreach team to raise awareness about this enormous undertaking soaked it all in.
 
Caitie Nigrelli, left, and Diana Mally, an environmental
engineer with the U.S. EPA, walk by the river.
“I’m enjoying the beautiful river,” Nigrelli said. “It‘s amazing because just a few years ago I was standing in the same spot, and it was contaminated. Now I look out and it is clean and beautiful.”
 
Nigrelli serves as a liaison between the U.S. Environment Protection Agency (EPA) and community stakeholders to promote awareness of the Grand Cal remediation through public meetings, tours, and events with school children.
 
The Grand Calumet was at rock bottom when the International Joint Commission designated it as an Area of Concern in 1987. Since then $159 million in combined state and U.S. EPA funds through the Great Lakes Legacy Act have thus far provided the means to clean it up.
 

Because of the extent of the work, the Grand Cal’s 13-mile system was divided into eight separate projects, with more milestones to come. This most recent event marked the completion of a 2-mile section from Kennedy Avenue to Cline Avenue at a cost of $82 million. The money went toward remediating 1.1 million cubic yards of contaminated sediment, restoring 58 acres of marsh habitat, and installing more than 170,000 plants.

 
This effort not only remediated sediment, but also removed invasive species like Phragmites that had overrun dune and swale habitat, crowding out native plants.
 
The federal funding, while generous, comes with a significant stipulation: Local partners must match at least 35 percent of the cost of remediation. The Indiana Departments of Natural Resources and Environmental Management footed the bill with money from a Natural Resource Damage Assessment involving eight industries.
Lee Botts
 
But a remediation project requires more than money. It takes supportive partnerships and community trust. The Kennedy to Cline section was made possible with the knowledge and expertise provided by The Nature Conservancy, Shirley Heinze Land Trust, Save the Dunes, U.S. Fish and Wildlife Service, and IISG, as well as the local municipalities.
 
Kris Krouse, Shirley Heinze Land Trust executive director, said, “From our perspective as an organization, it is probably one of the most spectacular and monumental achievements when it comes to land conservation.”
 
Octogenarian Lee Botts, a prominent Great Lakes environmental activist since the 1960s, is making a film about the changes the south end of Lake Michigan is experiencing. She remembers questioning that any kind of restoration was ever going to happen.

 

“Amazing progress is being made by partnerships among all kinds of interests—some of whom in the past were enemies and opposed the conservation,” Botts said. “Now it’s a shared goal of all these interests. We’re making progress.”

Remediation on the next section starts next week—going west, it includes the city of Hammond and will go up to the Illinois border.

 
For more information on the ongoing cleanup of the Grand Calumet River, visit www.greatlakesmud.org.
 
This story appears in the latest edition of The Helm.

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🌊 Boost Your Great Lakes Literacy in 3 Easy Ways!1️⃣ Read the Great Lakes Literacy Principles2️⃣ Join a Sea Grant professional learning event3️⃣ Explore Great Lakes educational resources📬 The summer edition of the Center for Great Lakes Literacy newsletter supports all three—and more!Perfect for educators, environmental leaders, and curious minds.👉 Subscribe today and dive into a world of Great Lakes learning: https://conta.cc/3ZtrIKc or the link in bio.
Don’t miss this opportunity to enhance your teaching skills and connect with fellow educators! Join us for a two-day, water-themed workshop on August 8-9, 2025, at the Dunes Learning Center located in Indiana Dunes National Park. Open to all 5-12th grade formal and non-formal educators, this event offers a chance to explore the natural world, network, and receive exclusive access to the newest Project WET Educator’s Guidebook: Water in Earth Systems.The registration deadline is July 18th.Learn more at the link in bio.
📣 Aquaculture Teacher Workshop – June 2025🗓️ June 26–27, 2025📍 Purdue University – John S. Wright Forestry Center🕐 Starts June 26 at 1 PM | Ends June 27 at 4:30 PM🌿 Optional Pre-Tour: June 26, 10:30–11:30 AMExplore Aquaculture & Aquaponics in Action!Perfect for science teachers looking to bring hands-on, real-world STEM into the classroom.What’s Included:✔️ Facility tours at Purdue & nearby✔️ Build-your-own aquaponics system (FREE to take home!)✔️ Hands-on labs & classroom integration ideas✔️ $250 stipend for travel or classroom supplies✔️ Open to formal and non-formal educatorsLearn how aquaculture is a powerful tool for engaging students in science, sustainability, and food systems!Spots are limited – register early!Learn more at the link in bio.
IISG is hiring a part-time pollution prevention outreach assistant. IISG’s pollution prevention team addresses water quality issues affecting the Great Lakes coasts and the inland waters of Illinois and Indiana, specifically focusing on contaminants of emerging concern like pharmaceuticals, microplastics and marine debris, and PFAS. This outreach assistant will support the pollution prevention team by developing outreach activities and engaging with communities to share that knowledge.Learn more and apply at the link in bio.
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