I was wondering how your drainage was, since it seems so flat.
Ouch - when you ARE the low spot for the neighborhood, you don't have many options.
Is there a town sewer or storm drain you can lead the flood waters towards?
Or are you going to have to build up really really RAISED raised beds?
In theory, you could build berms or dikes all around your property to try to redirect flowing surface water away from your spot, but then you'd be like Holland: surrounded by and towered over by water.
(shudder)