Is it possible to make ymap with only sandy shores and paleto bay?

I have roleplay server that’s based on year 1950 and i would bit of help. Can i do ymap or something that deletes city part and replaces it with sea. So only sandy shores and paleto bay. Thanks for replys!

(pic down to demonstrate)

It’s not possible only with YMAP modifying. You also need to modify models (terrains and it’s LODs) to make them touch to sea level at city part. And of course you need to modify water quads to fill city part.