CC Terrain Toolshttps://worldofbanished.com/index.php?action=downloads;sa=view;down=389
This includes the regular "Flatten Terrain" tool where you have to pickup all of the resources before it will flatten.
It also includes the "Power Flatten" tool from CC where all resources are immediately destroyed and the land flattened instantly.
Also included is my Terraform mod that allows you to slightly raise and lower terrain one square at a time.
This shouldn't conflict with anything (except CC), so you're welcome to add this to an existing game. Non-conflicting mods can be placed anywhere on the mod list, so this can go all the way at the bottom if you want.
Be careful with these, as they can't be undone.