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This image, taken on June 19, 2018, by an astronaut onboard the International Space Station, shows sediment runoff into Lake Superior near Duluth. The Nemadji River regularly unloads red clay sediment into the Lake Superior Harbor, but the discharge was intensified during the flooding event and discolored waters. Astronaut photograph ISS056-E-21591 is provided by the ISS Crew Earth Observations Facility and the Earth Science and Remote Sensing Unit, Johnson Space Center.