Wednesday, August 26, 2015

Hurrican Katrina Water Depth

Ten years ago Hurricane Katrina slammed into the Gulf Coast destroying much of New Orleans. This extremely colorful image shows the depth of water at the height of the flooding. The colors are a bit counterintuitive for water depth (blue is one of the low water depth colors) but it still works effectively.

Also shown are levee breaches and arrows indicating the direction of storm surges. The peculiar geography of New Orleans with its levees protecting areas below sea level means that unlike just about everywhere else, the elevation is higher in the waterfront areas. That means the inland parts of the city are more susceptible to flooding. The map is by Dan Swenson and was originally from the Times-Picayune. The large version can be seen here.

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