Susan MiHalo (center) showing historical map of location to Terri Hallesy (far left) and educators

Illinois-Indiana Sea Grant’s Terri Hallesy and Leslie Dorworth and I pulled up along the river’s edge and parked our car on the gravel road. As our group approached the bank, two majestic egrets took flight looking like purest snow against a backdrop of vibrant blues and green. A bald eagle had been spotted earlier, perched on a favorite branch of a dead cottonwood hanging over the river.

Roxana Marsh

Educators tour Roxana Marsh, a 19-acre restoration site.

It’s hard to believe that five years ago, a brown stand of the invasive species, Phragmites, had dominated the landscape where we were standing. The Grand Calumet River has made a radical transformation over the last 10 years thanks to the Great Lakes Legacy Act and many dedicated federal, state, and local partners. Our mission that day was to help 42 teachers from South Bend, Indiana understand just how large the ongoing transformation is, in hopes that they would carry this inspirational message back to their classrooms in the form of science labs, writing assignments, and other educational activities.

We set out to accomplish this mission by hosting an IISG teacher workshop at Purdue University Northwest, Hammond campus in collaboration with The Nature Conservancy (TNC), the Indiana Department of Natural Resources (DNR), and the Indiana Department of Environmental Management (IDEM).

IISG’s Caitie Nigrelli stands in front of 58 acres of restored wetlands of the East Branch of the Grand Calumet River.

Leslie and I have worked many years on the Grand Calumet River remediation and restoration and led the workshop. IISG assistant, Ben Wegleitner, played a coordinating role. Working together, we brought in partners, Susan MiHalo (TNC), Carl Wodrich (DNR), and Anne Remek (IDEM), to talk about the Grand Calumet River and to host a tour of restored sites along the river.

As IISG education coordinator, Terri demonstrated curricula and classroom activities as educators worked in groups, insuring its infusion into existing science curricula.

She shared information about the issue of aquatic invasive species spread by sharing an innovative web site, Nab the Aquatic Invader! This engaging tool introduces students (grades 4-10) to marine and freshwater invasive species and their impacts using a detective theme and cartoon characters. Teachers also learned the environmental issue concerning improper release of classroom animals and plants and the threat they pose to the Great Lakes ecosystem through the campaigns, Habitattitude™ and Be a Hero-Transport Zero ™.

Carl Wodrich (right), Indiana Department of Natural Resources, guides educators on a hike.

Terri explained what she hoped to achieve that day—through direct experience with relevant education resources, these educators are now better equipped to explain how students can play an active role in helping to prevent the spread of AIS and foster a greater awareness of aquatic science.

For classroom activities and curriculum ideas, visit IISG’s Education Products page.

For information on the cleanup and restoration of the Grand Calumet River, visit www.greatlakesmud.org.

Terri Hallesy and Leslie Dorworth also contributed to this article.

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

IISG Instagram

Congress is finalizing the FY26 budget, and federal funding for Sea Grant programs across the country—including Illinois-Indiana Sea Grant—is uncertain. Sea Grant programs have consistently had broad community and political support, and now such support is more important than ever.Add your name to our sign-on letter urging Congress to support continuation of programs benefiting the Great Lakes, supporting local economies, and connecting communities with science-backed solutions.Scan the QR code or visit the link in bio to take action.
Stay updated with the latest environmental education happenings in the Great Lakes region. The Center for Great Lakes Literacy’s latest newsletter features upcoming events, professional learning opportunities, and valuable educational resources. Don’t miss out on these exciting updates—click the link in bio to read more and get involved!
Out with the old. A newly updated UnwantedMeds.org is here to make safe disposal of old medications easier than ever. Read more at the link in bio.
We are excited to offer the opportunity to propose a speaker or panel session during the 2026 Emerging Contaminants in the Environment Conference April 28-29.  The conference will feature traditional 15-minute presentations and a poster session on the latest in emerging contaminant research, policies, and outreach in the soil, water, and air.The deadline to propose a session is June 16, 2025.Learn more at the link in bio.
Skip to content