A dry recent history does not settle flood exposure
Wildwood's Flood Protection Information says every property is within a floodplain, even where a particular house has not flooded recently. It identifies V zones primarily along the beach east of the boardwalk. Those mapped conditions are different from a damp patch under a house after rain.
We inspect the patch and ask about outside water levels before recommending a drain. You should also confirm your property's flood zone and elevation information with the city. A household sump or sealed ground liner is not a substitute for flood mitigation.