Short answer. No. Article 508 of the Civil Code provides that private ownership of the beds of rain waters does not give a right to make works or constructions that change their course to the damage of third persons, or whose destruction by floods may cause such damage. Ownership of the bed does not include the right to harm neighbors.
What the law says
The private ownership of the beds of rain waters does not give a right to make works or constructions which may change their course to the damage of third persons, or whose destruction, by the force of floods, may cause such damage.
Civil Code, Article 508 — Limits On Rain Water Beds. Read the full provision →
What Article 508 prohibits
Article 508 of the Civil Code establishes a clear limit on the rights of a private owner over a rain water bed: The private ownership of the beds of rain waters does not give a right to make works or constructions which may change their course to the damage of third persons, or whose destruction, by the force of floods, may cause such damage. Ownership of the physical channel — the bed — does not carry with it the right to alter the water's flow in ways that injure others. The article identifies two prohibited categories: works that change the course of the water to another's detriment, and works whose destruction during a flood would itself cause damage to third parties.
Ownership of the bed is limited by harm to others
Under the Civil Code, the general principle of property ownership allows an owner to use, enjoy, and dispose of their property. But that freedom is not absolute — it is bounded by the rights of neighboring property owners and of third parties generally. Article 508 applies this principle specifically to rain water channels. An owner may have full title to the channel running through their land, but that ownership does not authorize construction that diverts, blocks, or concentrates water flow in a way that floods, erodes, or otherwise damages other people's property. Ownership confers management rights; it does not confer the right to shift a natural burden onto neighbors.
The two-part prohibition explained
Article 508's prohibition has two distinct prongs. The first covers works or constructions that change the course of the rain water to the damage of third persons. This targets active diversion — channeling water toward someone else's land, redirecting flow away from an intended path, or concentrating run-off in a way that causes flooding or erosion downstream or to neighboring properties. The second prong targets constructions that, even without changing the normal course of water, are so fragile or poorly built that their destruction during a flood event would itself cause damage. A poorly built dam or weir that collapses under flood pressure and sends a surge of water onto nearby land falls under this second prohibition.
What a neighbor can do
If a neighbor has made works on their rain water channel bed that are diverting water onto your property or creating structures that pose a flood risk to you, Article 508 gives you a legal basis to challenge those works. The article recognizes that you have a right to be free from damage caused by works that alter the natural flow of rain water through another's land. The neighbor's ownership of the channel bed is a fact, but it does not shield them from liability for damage they cause or authorize them to create hazards that threaten your property. Third parties harmed by such works have recourse under the Civil Code's provisions on property and on liability for damages.