As part of the shape file that is available from FEMA, is a sea surge variable that is interesting. Not a geology student, I can see now that flooding can be caused by wave height and the shape of the waves as well. Simple street elevation is not enough to show which areas are at risk of flooding. The shape, height and angle of a barrier can determine the extent of damage that may occur. I hope that this map is helpful even though according to FEMA, the data is not complete. I brought in the shape files of New York Subways and Railroad because this is the subject of our blog. Although not shown on the map below, Manhattan is not effected by this FEMA map, except for a very small area near Marble Hill.
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