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August 7, 2014 - Lake Erie Algae Bloom

Lake Erie Algae Bloom Before
Landsat 8
June 14, 2014
Lake Erie Algae Bloom After
Landsat 8
August 1, 2014
Lake Erie Algae Bloom Map
Lake Erie Algae Bloom Before
Lake Erie Algae Bloom After
June 14, 2014 August 1, 2014
Interactive graphic - hover over image for slide bar to appear
 

Algae blooms commonly happen in late summer on Lake Erie, but the blooms have been increasing in recent years. This year, north winds pushed the algae toward the water intake system for Toledo, Ohio, the urban area visible in the lower left of these Landsat 8 images. No algae are visible in the June 14 image, but the algae show up as green swirls on the surface of the water in the August 1 image. The white spots above the land and water are clouds. Read more about the algae bloom at NASA Earth Observatory.