New maps show building-by-building extent of Hurricane Sandy flooding

Maps created by John Nelson of IDV Solutions compare forecast flood zones to on-scene measurements of Sandy’s storm surge in New York City.

Lansing, MI – February 5, 2013  A new set of map-based visualizations by John Nelson of data visualization company IDV Solutions shows the extent of flooding in the New York City area following Hurricane Sandy in October 2012. The detailed maps show how individual buildings fared, and how the storm surge compared to previous forecasts of flood risk in the area.

Teams of Federal Emergency Management Agency (FEMA) investigators scoured New York City for high water marks directly after the storm, and combined their findings with data from flood gauges to find the boundaries of the inundation following “super storm” Sandy. Nelson overlaid this data on a map of the city that shows the footprints of individual buildings.

Additional maps show flooding predictions from the U.S. Army Corps of Engineers models, and how these compare to the actual effects of the hurricane/

“When you’re creating a model, you need to assume an impossibly generic storm,” Nelson said. “A real storm, though, has a unique combination of characteristics and angles of approach, so the reality will always look somewhat different than the predicted risk zones. It’s interesting to see where Sandy’s effect was different from the model, and where the model overlaps with reality.”

Viewers can examine the maps in detail, zooming out for an overview of the affected areas or drilling down close enough to find individual buildings.


About IDV Solutions

IDV Solutions is a data visualization software company that helps organizations discover opportunity, identify risk, and take action. By repeatedly solving key problems for customers in the Global 2000 and government, IDV and its products have earned a reputation for innovation, speed, and the highest quality user experience. For more information, please visit http://www.idvsolutions.com

 

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Editor (18230 Posts)

Glenn is a geographer and a GIS professional with over 20 years experience in the industry. He's the co-founder of GISuser and several other technology web publications.


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