For anyone familiar with the Grand Calumet River, the changes over the last few years are impossible to miss. The historically industrialized river, long ago abandoned by both people and wildlife, is now home to birds, fish, and other aquatic life in many areas. The revitalization is due to a series of remediation and restoration projects that will remove more than 2 million cubic yards—roughly 130,000 dump trucks—of contaminated sediment and add native plants to banks and marshes by 2015.   

The east branch of the river is one of these revitalized areas, and it is there that representatives from government agencies and non-profit organizations, including IISG’s Caitie McCoy, met earlier this month for a tour of the remediation projects.

The tour, coordinated by Save the Dunes, was aimed at highlighting the work and thanking representatives from the offices of U.S. Rep. Pete Visclosky, D-Merrillville, and U.S. Sen. Joe Donnelly, D-Ind., for their support in the efforts and encouraging support for future funding.  

“They’ve been our champions to maintain (Great Lakes Restoration Initiative) funding for the last four or five years,” Nicole Barker, executive director of Save the Dunes, said. “We are indebted to them.”

The group visited some of the river’s biggest success stories, including Roxana Marsh, which has been free of high levels of PCBs and heavy metals for over two years. They also heard from officials about local changes that are helping to secure the long-term health of the river. In Hammond, IN, for example, raw sewage that was previously discharged into the newly-remediated river is now being redirected to the city’s wastewater treatment plant. 

Perhaps the most interesting part of the tour came during the stop at Seidner Marsh. Remediation for this part of the river wrapped up earlier this year and attention has been turned to dredging wetlands and rebuilding habitats. The group was able to see these efforts first-hand as workers delivered barge after barge of fresh sand to be spread along the riverbed.

“It is important that these restoration projects do more than just remove contaminated sediment,” said Caitie. “We also want to help jumpstart wildlife populations, and that includes the invertebrates and microorganisms that live at the bottom of the river. The clean sand gives them a home, a place to burrow in.”

 
Cleanup and restoration on the Grand Calumet will continue for many years—six of the nine project areas are still in progress. But residents and visitors can expect to see a clean river bottom with a thriving plant community as early as 2024.
To read more about remediation projects on the Grand Calumet, visit the Indiana Department of Environmental Management website

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🌊 Save the Date! 🌊Shipboard Science Immersion 2026Join the Center for Great Lakes Literacy aboard the R/V Lake Guardian on Lake Superior, July 7–14, 2026!✅ Open to formal & nonformal educators (grades 5–12) across the Great Lakes region.📅 Applications open January 2026Learn more: https://cgll.org/signature-program/r-v-lake-guardian-shipboard-science-immersion/ or the link in bio.#TeachingTuesday
Join the Invasive Crayfish Collaborative for an exciting webinar featuring Dr. Chris Taylor from the Illinois Natural History Survey who will provide an overview of midwestern crayfish habitat requirements, feeding, reproductive biology, and life-history.Crayfishes in the Midwest occupy almost every type of aquatic and semi-aquatic habitat in the region. They function as critically important components of those ecosystems and in many cases represent a majority of invertebrate biomass. As “keystone” species, understanding their biology and roles in ecosystems is critically important. Register for the webinar at InvasiveCrayfish.org/events1 Or the link in bio.
This season, let’s teach eco-friendly habits while spreading cheer! NOAA’s Greener Holiday Gift Guide is full of ideas to reduce waste and protect our precious water resources. Check out the full guide at the link in bio. #teachingtuesdayNOAA Marine Debris NOAA Education
The gales of November may come early, but, as usual, the nominations for the Lakies are right on time along with our official call for nominations! Brought to you by the Teach Me About the Great Lakes podcast, The Lakies (aka "quite possibly not the least prestigious Great Lakes-focused awards ceremony there is”) are back. Our goal isn't to be the Official Arbiters of Quality, but to host a fun celebration of amazing Great Lakes-related research, outreach, and communication in the inimitable Teach Me style.Nomination categories are:-Great Lakes Science Communication of the Year-Great Lakes Outreach Program of the Year-Great Lakes News Event of the Year-Great Lakes Research Finding of the Year-Coolest Thing You Learned Listening to TMATGL in 2025-Science Podcast of the Year (Non-TMATGL edition)-Great Lakes Animal of the Year-Great Lakes Non-Animal of the Year-Great Lakes Sandwich of the Year-Great Lakes Donut of the YearThe Details: -Deadline: Nominations close on December 4th.Process: It's easy (just enter the name/title and a link).-Self-Nominations: Highly encouraged. Don't be shy.We’d love to get a broad swath of work across both the serious and less-serious categories to celebrate. Feel free to pass the link on to interested people: https://bit.ly/Lakies25