When deluges produced by Tropical Storm Lee forced officials to open the gates of the Conowingo Hydroelectric Dam, 4 million tons of built-up sediment gushed into the Chesapeake Bay, coloring the upper half brown, as seen in this satellite image taken Sept. 12. Read related article.

Image source: NASA/GSFC, Rapid Response | Graphic: Gene Thorp and Bonnie Berkowitz/The Washington Post November 6, 2011
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