Non Tribuo Anus Rodentum and off to the next adventure (RIP)
Join Date: Dec 2002
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I don't know 'fer shure' but I think a documented flood plane is an area that has actually experienced flooding due to severe weather. For example Burlington, NJ back in the 50's, when the Delaware came over its banks ant the city got flooded out to Rt 130. or more recently Easton, PA when the got hit by the river crests a couple years ago.
Undocumented would be an area that's in the 500 year projection area, but has yet to be actually flooded.