“This year marks the 20th anniversary of the Great Lakes Observing System (GLOS). For two decades, GLOS has worked to ensure that everyone who depends on the Great Lakes—from commercial shippers to beachgoers and drinking water managers—has access to reliable, real-time data, when and where they need it most. Whether it’s supporting safe navigation, protecting public health, or providing critical information for emergency response, GLOS plays a vital role in keeping the Great Lakes safe.”





















Reflections on 20 Years of GLOS
GLOS began as a revolutionary idea to collect and share open-sourced high quality data for the public at large, including swimmers, fishers, the maritime community, researchers, and utility operators. This allows unprecedented access to information for people to make educated and timely decisions. For the 40 million residents and commercial users of Great Lakes water – to drink, recreate, or traverse its vast expanse – it means safety. It’s exciting to think about what GLOS will bring to the Great Lakes region in the next 5, 10, and 20 years.Â
GLOS delivers a measurable return on investment. From real-time wave, wind, and temperature data that protect commercial shipping routes, to early warnings that help communities prepare for flooding, dangerous currents, or ice hazards, GLOS reduces risk and saves lives. It’s a backbone for regional resilience—supporting fisheries, tourism, infrastructure planning, economic prosperity, and emergency response across the Great Lakes.
GLOS really exudes creativity in many things. Whether it’s the observing program or keeping up Seagull, or communicating with the public on [heavy] topics. I appreciate the creativity in running the organization and conveying scientific concepts in an imaginative, innovative way.
Organizations like GLOS are really important for the future of the Great Lakes. GLOS has the ability to continue to listen carefully and fill the gaps in ways that are really going to be important for the whole basin. There is no one else doing that for data at that level: connecting the data across the border.
I’m just glad that GLOS continues to exist and will continue to exist, to put more Great Lakes data in people’s hands. I don’t think there’s anybody else, there’s no single company that’s going to do that the way GLOS is trying to do it. There needs to be something like GLOS, for us to continue to understand the lakes and to safeguard them.
20 Years of GLOS – Feature Interviews
Communicating GLOS – an interview with former Communications Specialist, David Fitch
Big impact and innovation over the years – an interview with former COO, Becky Pearson
From the beginning – an interview with GLOS’ first Executive Director, Jen Read
Reflections from the Board – Interview with new Chair Heather Stirratt
Thank you, Tom – A farewell interview and reflection with GLOS Board Chair Tom Rayburn
The 20th anniversary of the Great Lakes Observing System (GLOS) – a letter from CEO Jennifer Boehme
Share a Memory
So much of GLOS’ history has been intertwined with regional partners, users, and stakeholders. We would not be the organization we have grown into, without the influence and support from our basin-wide community.
If you have benefitted from GLOS projects, partnerships, or data products/resources over the past 20 years, please share your experience with us! Send a brief message and/or a photo from your experience with GLOS.






