GLOS works to make real-time and historical data publicly available to the larger Great Lakes community, benefiting data users and decision makers.

  • GLOS Data Portal: Boaters’ View

    GLOS Data Portal: Boaters’ View

    The redesigned Boaters' View of the GLOS Data Portal provides recreational boaters information on lake conditions to help them determine if it is a good boating day. The easy to use, web-based format was customized to address information needs specific to boaters in the Great Lakes, including information on marina and boat launch locations, conditions on the lake including water currents, waves and wind as well as more detailed data for buoys and weather stations around the lakes.

  • Great Lakes Buoys

    Great Lakes Buoys

    Easy access to real-time observations from buoys and monitoring stations in the Great Lakes region. Buoy data gives users a glimpse of current lake conditions by reporting meteorological and oceanographic conditions, including physical data, e.g., wind (speed, direction, gusts), waves (height, period, direction), and water temperature, as well as selected bio-chemical data, phosphorous, chlorophyll a, and related remote sensing activities.

  • HABs Data Portal

    Harmful Algal Bloom Data Portal

    The Harmful Algal Bloom Data Portal provides convenient access to data used to monitor conditions and to alert those making decisions regarding harmful algal blooms and water treatment.

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Get to know the Great Lakes Observing System

Why are environmental observations so important, and to whom? Meet some of the organizations who are using GLOS data, and learn about how GLOS is transforming the way we interact with and manage the Great Lakes.

Join GLOS

GLOS members represent a variety of data providers, data managers, and data users. While each member has distinct interests, all are dedicated to and benefit from achieving the GLOS mission: to connect data users with data providers in ways that are supportive of policy and decision making.