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“Turbidity” is not a rock band and the Hydrolab is still jammin’
September 29th, 2015 by iisg_superadmin
Students brave winter weather to study water quality
March 11th, 2015 by iisg_superadminSeveral students wrote in to share their experiences working with the Hydrolab. We wrap things up today with Gayin Au.
Under the circumstances of an extremely frosty cold weather, our environmental classmates were still very eager to head out and experience the Hydrolab. As soon as we reached the river by our school, we saw a lot of trash in the river. The water looked very dense and had a very dark green color.
Two people were responsible for holding the Hydrolab since it was quite heavy. The others stood back to watch. I was surprised that we were able to get results really quick; at first I thought it would take a lot of time to process the information.
Goose poop, which is high in nitrate, dissolves and mixes into the water and plants use this nitrogen to keep them nice and fertilized. However, the river is also greatly harming the living things in it. The water lacked oxygen, meaning it will be more difficult for living things in there to survive. It also might mean there aren’t enough plants underwater to keep the normal level of oxygen up. It was greatly contaminated, and fish and other organisms will be affected, making them act unusually.
The lab was really quick and useful. It showed us the oxygen level, how much algae is in there, how polluted the river is in general, and more. The river goes by so many things that can affect it. Human trash, fertilizer, and goose poop (common near our school thanks to large fields of grass) all affect the quality of water.
Website of the week: Bringing science to life has never been so easy
January 28th, 2015 by iisg_superadminA closer look at web tools and sites that boost research and empower Great Lakes communities to secure a healthy environment and economy.
For over two years, the Limno Loan program has been shaking up science class across the Great Lakes region. Coordinated by IISG and the U.S. EPA Great Lakes National Program Office, the program gives students an opportunity to collect water quality data from local waterways with the same kind of monitoring sensors used by scientist aboard the R/V Lake Guardian.
And now, teachers can take their Hydrolab projects one step further with help from IISG’s new Limno Loan site. In addition to information about the equipment and the parameters it measures, the site provides lessons and activities to help teachers K-12 better integrate the Hydrolab into their aquatic science sections.
The activities, most of which were created by educators who used the equipment in their own classrooms, focus on demonstrating the connections between water quality, aquatic food webs, and human activities. Sample water quality data sheets are also available. The website also provides a unique opportunity for classes to share their data and compare it to information collected by fellow students across the region.
New activities will be added as they are developed, so be sure to check back later. You can also read more about how the Limno Loan program has helped improve student understanding of Great Lakes sciences in our Winter 2012 Helm.
Recent News
- Tomas Höök signing off as Illinois-Indiana Sea Grant director this summer
- Illinois-Indiana Sea Grant welcomes Stuart Carlton as the program’s new director
- Four Illinois and Indiana educators will set sail on Lake Michigan aboard EPA’s research ship
- Join IISG as a new pollution prevention outreach assistant
- Beach season means it’s time for lifesaving Lake Michigan water safety resources
IISG Instagram
📢 Show Your Support for Sea Grant! 📢
Continued federal funding for Sea Grant in FY26 is crucial, and we need your help to demonstrate the nationwide support for these essential programs.
🖊️ Sign the letter urging Congress to continue funding Illinois-Indiana Sea Grant and all 34 state Sea Grant programs:
🔗 https://forms.gle/7sPGHGyh8j8a7vfGA or link in bio

Exciting news! The call for sessions for the 2026 Emerging Contaminants in the Environment Conference has been extended!
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 September 30, 2025.
Learn more at go.illinois.edu/ecec or the link in bio

Stay safe and have fun this Fourth of July with these 5 water safety tips! Click the link in bio to learn more ways to keep yourself and others safe as you enjoy the Lake Michigan beaches this holiday.

Four science educators from Illinois and Indiana have been selected for the 2025 Shipboard Science Immersion on Lake Michigan July 7-13. The educators will spend a full week alongside researchers aboard the EPA research vessel Lake Guardian. Afterwards, they will bring Great Lakes science back to their classroom.
Learn more and meet the four incredible teachers representing Illinois and Indiana at the link in bio.

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