VIAJAR V. CA
168 SCRA 405
Spouses Ladrido were owners of a registered land. Spouses Teh were also owners of a registered land. The latter sold the land to Viajar. During a relocation survey, it was found out that the land was being occupied by Ladrido. It was found out also that the 2 parcels of land were separated by the river—one portion was being possessed by the defendant together with the old river bed.
Registration under the Torrens system doesn't protect the riparian owner against the dimunition of the area of his registered land through gradual changes in the course of an adjoining stream.