“Because of this, engineers have been encouraged to develop just about any solution to keep carp at bay — or out of one.One such solution was the electric barrier in the Chicago Sanitary and Ship Canal, which was meant to keep Asian carp from swimming through the CAWS and into Lake Michigan. Of the identified 18 points of entry into the Great Lakes, the Army Corps believes the CAWS point is the most critical.
The barrier consists of three electrodes arranged in a line. These electrodes power a barrier much like an electric fence for dogs. Fish swimming into it receive an electric shock sufficient enough to stun them and keep them out — in theory. According to a report issued by the Army Corps in December, 2013, the barrier is effective against adult carp, but smaller fish of two to four inches long were able to find a loophole……It’s a big risk to take when plans require billions in funding. Still, an appropriate plan may pay off in the long term. Recent studies suggest that controlling the spread of invasive species already present in the Great Lakes can cost up to $800 million annually.”
Recent News
- Join IISG as a new pollution prevention outreach assistant
- Water Safety Month shines light on lifesaving Lake Michigan resources
- New crayfish curriculum engages students in Great Lakes and local invasive species issues
- Relaunched website provides resources for proper medicine disposal
- Meet our Grad Student Scholars: Lena Azimi
IISG Instagram
Don`t miss out on the latest edition of our "Making Waves in Education" newsletter! Reserve your spot for a live, Students Ask Scientists call from Lake Superior, and stay updated on upcoming in-person events to learn and network with fellow educators. Perfect for Illinois and Indiana educators passionate about the Great Lakes and environmental education.

Join us on June 6-7 at the Indiana State Fairgrounds to explore aquaculture business management at the NCRAC Aquaculture Business Short Course! Presented by Sea Grant & @purdueextension, this course provides essential skills for effective farm finance management. Don’t miss this opportunity to enhance your expertise in aquaculture!
Important Info:
-Hands-on training to help aquaculture producers manage their farm finances
-Includes one-on-one expert time + free $120 textbook
-Instructors from Purdue, Mississippi State, and University of Maryland
-Laptop + farm financials required for participation
-Limited seating – first come, first served!
More info at the link in bio.

May is National Water Safety Month—and Lake Michigan deserves your attention. Its waves may look calm, but dangerous currents and sudden drop-offs make it the most hazardous Great Lake for drownings.
This May, we’re encouraging everyone to take a moment to get informed. Check out our brochures, safety tips, and the new Lake Michigan water safety video before heading out to the beach or boat.
Full story at the link in bio.

Join the Invasive Crayfish Collaborative for an exciting webinar featuring educator and author Rick Reynolds. Rick will demonstrate how to engage grade 2-12 students using the newly developed science curriculum "Investigating Crayfish and Freshwater Ecosystems". Rick will share STEAM activities, including scientific investigations and simulations. Participants will also gain the tools and confidence to participate in the Invasive Crayfish Collaborative’s crayfish study- supporting ongoing research and conservation efforts.
Register for the webinar at the link in bio.
