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Floods -- United States

Flooding on the Mighty Mississippi

This week, floodwaters of the Mississippi River crested, leading several counties in Iowa, Minnesota, Illinois, and Wisconsin to declare states of emergency. Floodwaters have reached over 22 feet in Davenport Iowa, closing in on the 1993 record water level. Davenport is perhaps particularly hard hit because it is not equipped with concrete levees, as it relies heavily on its riverfront as a...
NOVA: Mystery of the Megaflood

More than 75 years ago, Professor J. Harlan Bretz of the University of Chicago began to explore the dusty scablands of eastern Washington in an attempt to learn more about this rather unique area and also to determine how this land was transformed over time. Bretz soon came to the conclusion that the scablands were not the result of slow geological weathering, but rather the result of a massive...
Coastal Flood Risks

This informative subset of the Federal Emergency Management Agency (FEMA) website offers a profusion of material on coastal flood risks in the continental United States. The various maps, charts, and articles may be scouted by interest group (Homeowners, Community Officials, Industry Professionals, etc.) or by geographic region (Atlantic, Pacific, Great Lakes, and Gulf of Mexico. In addition,...