Civil Code (Cap. 16), article 537

537. In questions of possession in matters concerning easements, the rights and obligations of the dominant and the servient owners and of any other party interested shall be determined by the mode of enjoyment during the preceding year, 156 [CAP. 16. CIVIL CODE or, where the easement is exercis ed at intervals of more than o ne year, by the last user thereof. Action to restrain continuation of new work where damage is feared.