Products & Tools

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

GLOS also provides data services to support the region’s need for data, modeling, and other data tools or products. For more information on the benefits of GLOS data, see Focus Areas and Projects.

GLOS makes data accessible through our web based Data Portal and specialized decision support tools. Tools allow users to access (view), browse (search), and optionally download data or datasets. Data can also be accessed directly through web-services for the advanced user.
The Data Portal provides browsing access to near – real time data for:

  • Point Observations (winds, waves, water temperature, water levels, air temperature, dissolved oxygen, streamflow and turbidity)
  • Satellite Observations (base reflectivity including weather hazards, chlorophyll concentration, colored dissolved organic matter, dissolved organic carbon, natural color, suspended minerals and water surface temperature)
  • Model Forecasts (currents, ice thickness, water level, waves, winds).

It also provides search access to metadata from numerous partner stations and from our GeoNetwork instance
Learn more about the type of data available on our Technologies and Data Categories pages

Data Portal

Data Portal 

The GLOS Data Portal provides access to near-realtime and archived observations and the ability to model forecasts for the Great Lakes. This includes lake conditions, water levels, wave heights, air and water temperatures and more. Receive updates from the station or buoy of your choice, and even download data from the site.

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, chlorophyl...

HABS

HABS 

The HABs Data Viewer provides convenient access to data used to monitor conditions and to alert those making decisions regarding harmful algal blooms and water treatment. Data is supplied by sensors through the Lake Erie HABs Monitoring Network, and includes a diverse range of water quality stakeholders.

Huron-Erie

Huron-Erie 

The Huron to Erie Connecting Waterways Forecasting System provides predicted forecasts of water levels and currents through the Huron to Erie Corridor. The tool has varying applications, which include guiding spill response, search and rescue, beach health management, drinking water safety, and finding the source of fish kills, among others.

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, wav...

Web Services

Web Services 

GLOS data services offer data discovery, data access and data archival through widely adopted standardized protocols. In addition to viewing and downloading through our portal, users can access some data directly through our web services. Other data can be search for and linked to thorough the metadata catalog.

Nutrient Tracker

Nutrient Tracker 

Data relating tributaries are important to assess the amount of nutrients loading into the Great Lakes. The Maumee River nutrient tracker is a tool for researchers to track these inputs. Heidelberg University collects water samples on the Maumee River at least daily near Waterville, Ohio and collects three samples a day during storm events.

Point Query Tool

Point Query Tool 

The NOAA Great Lakes Coastal Forecasting System is a numerical model that calculates waves, currents and temperatures for each of the Great Lakes. The GLCFS Nowcast, run four times per day, provides estimates of conditions at the time the model was run. The GLCFS Forecast runs twice per day and provides a prediction of conditions 60 hours into the future.