Ok! thanks, I appreciate your opinion, I understand what you are saying, let's say that the Storm approaches from either way, and that affects the river so the flood is traveling in front of the storm. Then the flood reaches the site before the storm. At the time the storm hits, my site is...
I'm designing a detention pond for a 8 acre project that part of the site lies on the limits of the AE Zone, but outside the delineated floodway of a river. Of course the lowest point on my site and the only one suitable to establish the pond is right inside the very limits of the floodplain...