Note: This message is displayed if (1) your browser is not standards-compliant or (2) you have you disabled CSS. Read our Policies for more information.
Through GLRI funding, over 300 acres of habitat restoration is taking place in the Grand Calumet River AOC which will provide dune and swale habitat for many species including Karner blue butterfly, blandings turtle, spotted turtle and various migratory birds.
Research and monitoring is being conducted all around the Grand Calumet River AOC through university, federal, state, and local partners. This research will aid the planning for the future work in the AOC. The vast amount of work that has gone into the AOC is lengthy and technical, but the best way to see results is through the use of before and after pictures. People say that pictures paint a thousand words and these deserve a couple thousand in gratitude to those who have worked so hard to make positive changes in the Grand Calumet River AOC.
The river dredge used to clean up the Grand Cal and the area around Roxana Marsh can be seen in these photos. The dredge has a long arm or pipe that extends out and down to the river bottom where a cutter head digs up the sediment and it is sucked up, much like a vacuum, to be taken offsite and disposed.
Roxana Marsh prior to dredging in 2011. The area in the right hand side was built up with contaminated sediments and became overgrown with an invasive species called phragmites.
Work at Roxana Marsh during the dredging process. Large equipment was used to cut, and dig out the phragmites and sediments.
This is a picture of Roxana Marsh right after the work was complete. Small newly planted trees dot the right hand side sand bar.
DuPont Nature Preserve Habitat Restoration: As part of the restoration process of the dune and swale, invasive trees are girdled and cut in order to open the canopy so that understory native dune and swale plants will grow and thrive.
East Branch Grand Calumet River Dredging Project: After the dredging of sediment has been completed, a mixture of sand and organo-clay are dispersed over the river bottom. The mixture acts as a cap keeping any other contaminants from migrating up into the river.
Jeorse Park Beach: While this beach is an active spot during the summer months, it is also the beach that incurs the highest levels of E. Coli and experiences the most advisories and closures during the swimming season.