My garden gets flooded occasionally so I've started digging paths and raising beds. The paths do fill up, but they drain when it stops raining for a few days. The
water ends up in our irrigation
pond which is just below the garden.
This is still work in progress, so I don't have real results to share. However, this means that this winter my kale isn't getting drowned.
I also have a
hugel terrace that is maybe 2 feet tall now, and I haven't seen any standing water on it.
If not having water in the paths is important, I am sure you could design some accesses that don't get flooded.
Also I wanted to share this
video of chinampas in Costa Rica: