See Striking New Images of Algae Blooms in the Great Lakes


The runoff challenge continues

TIME

NASA released these images on Tuesday showing algal blooms in Lake St. Clair (above) and Lake Erie (below). The image was taken by the Operational Land Imager (OLI) on the Landsat 8 satellite on July 28, 2015 as part of a larger effort between NASA, NOAA, U.S. Environmental Protection Agency, and the U.S. Geological Survey (USGS) to protect the public from toxic algal blooms in freshwater.

Lake Erie Algal BloomsNASA/NOAAAlgal blooms on Lake Erie, captured on July 28, 2015.

“There’s very little data on the severity of the blooms in Lake St. Clair from a monitoring perspective,” Dr. Richard Stumpf, an oceanographer at NOAA, told TIME. “That particular bloom, while it could be cyanobacteria, we don’t have confirmation.”

The bloom in Lake Erie, which NOAA forecasted in July may rival the algal bloom of 2011, has been confirmed to be toxic cyanobacteria. Western Lake Erie had one of the wettest Junes on…

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