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Find information for your decisions.

Storm approaching a beach
Mockup of Great Lakes and Buoy data on a computer and phone


Seagullโ€”a powerful, cloud-based platform for Great Lakes data and information

GLOS built Seagull to help connect people to the water like never before. A powerful, cloud-based platform, Seagull re-imagines how connected data becomes information and insights in peoplesโ€™ hands.

Seagull enables observers to:

  • Understand live lake conditions and make informed decisions
  • Contextualize information using search, a beautiful map, and simple visualizations
  • Easily connect a device or data source and share it with thousands of other people
  • Track their buoy, sensor, or other observing platform in real-time

Legacy Apps

Some legacy applications will be phased out as Seagull adds functionality.


GL Buoys was retired in 2022. Now, see these data from buoys and more on Seagull.


Data Portal

Real-time, predictive, and historical data from across the region.


Great Lakes Geospatial Metadata Catalog

Information on hundreds of datasets.


Great Lakes Acoustic Telemetry Observation System

A hub for fish tracking data.


Maumee River Nutrient Tracker

Yearly trends for phosphorus and other nutrients.


Huron-Erie Spill Scenario Tool

A spill simulator to help protect drinking water.


Data + Info

May 8, 2023 | GLOS Annual Meeting + Seagull Workshop

Join us for the Great Lakes Observing System Annual Meeting and the Seagull Workshop!...


New light and temperature sensor arrays yield first year of data, soon available on Seagull

Published first in the GLOS newsletter Tim Johnson is a food web guy, but...

Data + Info

Year-round moorings offer a glimpse at the winter life of Lake Superior over 17 years

A crew recovering the โ€œkitchen sink mooringโ€ from a test deployment this past October....