antlophobia
The fear of floods or inundation.
rare, uncountable
As climate change brews, Woody is likely to suffer from a severe case of the newly diagnosed floodophobia (or antlophobia). He will not be alone.
Where it comes from
Presumably from Ancient Greek ἄντλος (ántlos, “hold of a ship; bilgewater”), also defined in LSJ as "a flood of water" + -phobia.
Adapted from the Wiktionary entry antlophobia (CC BY-SA 4.0).