Data disclaimer: NOAA/GLERL is not an operational center. We make every effort to ensure accuracy and minimize downtime, however, we cannot guarantee that data and products will always be available and/or accurate. Our forecasts and products should be considered experimental.

NOAA/GLERL is not an operational center. We make every effort to ensure accuracy and minimize downtime, however, we cannot guarantee that data and products will always be available and/or accurate. Our forecasts and products should be considered experimental. Please review our disclaimers.

Lake Erie Environmental Sample Processor (ESP) Data

The NOAA Great Lakes Environmental Research Laboratory will not be deploying the second-generation environmental sampler processors (2G ESPs) in Lake Erie for the 2025 field season.

As a result, real-time data on HAB toxins will not be available at the sampling locations below. All other routine HAB samples will be collected during the 2025 season and can be found on the Lake Erie Weekly Field Sampling Data page.

All past observations spanning 2019-2024, and their underlying data are available via a link here soon. To learn more about ESPs please visit What is an ESP? page here.

Point of Contact: oar.glerl.www@noaa.gov

Send comments to: oar.glerl.www@noaa.gov

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Map of Western Lake Erie sampling locations