Persons who shall for twenty years have made use for the irrigation of their lands of pluvial waters descending a ravine or gully, or any other similar channel of public ownership, may object to owners of higher tenements depriving them of this use. But if they shall have used a part of the water only, they cannot prevent others from using the remainder, provided the course of the amount which they previously used remains unimpaired. History —Law of Waters, art. 179.
Puerto Rico Legal Code