Avos love water but they don't like to sit in it, no wet feet for them. What kind of avocado do you have?
My dad has a grove of avocados in San Diego county here in Ca (mostly Haas). Most of them are on a hill, they are great trees for a slope. His sprinklers are on a low setting so they get a good soak but don't sit in a puddle, but since they are on a hill that would be pretty hard to do anyway.