what you have is a classic nuisance/trespass case. You can file a lawsuit to quiet title and compel the neighbor to stop causing dirt to flow across to your land. Your local department of building and safety may also be contacted; there are ordinances that prohibit placement of uncertified fill in sloping areas and that prohibit dumping spoils from excavation. The local authorities might issue a citation and compel him to remove his dirt pile.
Answered on Nov 14th, 2016 at 9:49 AM