Article 502
ART. 502. The following are of public dominion: (1) Rivers and their natural beds; (2) Continuous or intermittent waters of springs and brooks running in their natural beds and the beds themselves; (3) Waters rising continuously or intermittently on lands of public dominion; (4) Lakes and lagoons formed by Nature on public lands, and their beds; (5) Rain waters running through ravines or sand beds, which are also of public dominion; (6) Subterranean waters on public lands; (7) Waters found within the zone of operation of public works, even if constructed by a contractor; (8) Waters rising continuously or intermittently on lands belonging to private persons, to the State, to a province, or to a city or a municipality from the moment they leave such lands; (9) The waste waters of fountains, sewers and public establishments. (407)