I am working on a 20-acre site that lies within a FEMA designated zone "A". Only 63-cfs enters the site and is conveyed safely through a small portion of the site back to its natural channel. My problem is that the whole site lies within the flood zone but only 2 of the 6 buildings are really impacted by water. How am I supposed to calculate the BFE's for the remaining 4 buildings? Even if I base it off of local flow of 2 or 3cfs I would have to raise the minimum finished floor elevations 18" above that local flowline and then they don't comply with ADA.
Any guidance would be very appreciated.
Thanks, Justin Stoker
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