Lake Erie 2015 Algal Bloom NASA

In 2015, the year following the Toledo Water Crisis, Lake Erie had one of its worst years on record for algal blooms. On July 28, 2015, the Operational Land Imager (OLI) on Landsat 8 captured this image. The large bloom spread beyond the largest Lake Erie island, Pelee Island, which is part of the province of Ontario, Canada. Via NASA Earth Observatory . Image by Joshua Stevens, using Landsat data from the U.S. Geological Survey.