Riparian and Littoral Rights on Waterfront Property
Buying waterfront buys a bundle of rights that are easy to assume and hard to find in the deed. Where the property line actually sits, whether it moves when the shoreline does, and whether a dock is possible at all are separate questions with separate answers.
What this report covers
- The rights run with the land and generally cannot be severed and sold separately in most states.
- The boundary is usually a water line that moves, so gradual accretion and erosion change the parcel.
- The right to wharf out is subject to federal, state and local permitting rather than absolute.
- Water use is governed by a separate doctrine — reasonable use in the east, prior appropriation in much of the west.
- Public trust rights in the bed and the foreshore limit what a private owner may exclude.
The deed to a waterfront parcel describes the land. It rarely describes the rights that make the land worth what it cost — access to the water, the ability to build a dock, the treatment of a shoreline that moves. Those come from a body of state law that the deed simply assumes.
What the rights actually are
Riparian rights attach to land abutting flowing water; littoral rights attach to land abutting a lake or tidal water. The terminology varies and the substance is similar. The bundle typically includes:
- Access to the water from the abutting land.
- The right to wharf out — to build a dock or pier to navigable depth — subject to permitting.
- Accretion and reliction — additions to the land from gradual deposit or from a permanent recession of water.
- Use of the water for domestic and often other purposes, on the applicable allocation doctrine.
- An unobstructed view in some states, protected to a limited degree.
The critical characteristic is that these are usufructuary — rights of use appurtenant to the land, not ownership of the water or, usually, of the bed. That is why they generally cannot be severed and sold to someone whose land does not touch the water, and why a back lot marketed with lake access needs its access examined rather than assumed.
A boundary that moves
| Water body | Typical boundary | Who owns the bed |
|---|---|---|
| Tidal | Mean high water line | State, in trust for the public |
| Navigable fresh water | Ordinary high water mark | State, in most states |
| Non-navigable stream | Often the centerline | Abutting owners |
| Artificial impoundment | Set by the instrument creating it | Depends on the grant |
Because the boundary is defined by a water feature, it moves when the water does — but only in one of the two ways water changes.
Accretion and erosion are gradual and imperceptible, and the boundary follows them. A parcel that gains twenty feet of beach over thirty years has gained twenty feet of land.
Avulsion is sudden and perceptible — a storm cutting a channel, a river jumping its course. The boundary stays where it was, which can leave a parcel with a legal frontage on water that is no longer there.
Where a change results from someone's works — a jetty, a dredge, a fill — courts frequently refuse to let the party responsible gain land by it. An owner who builds a groin and accumulates sand may find the accretion doctrine does not apply to them.
Where private rights stop
Under the public trust doctrine, the state holds navigable waters and the beds beneath them for public purposes — navigation, commerce, fishing, and in many states recreation. Private riparian rights exist alongside that trust rather than above it.
Two practical consequences. A private owner generally cannot exclude the public from the water itself, nor from the foreshore where the trust extends to it. And any structure occupying the bed requires the state's permission, which is why a dock needs a lease or permit for the land beneath it in addition to a construction permit.
How far the trust reaches onto the shore is one of the most litigated questions in this field, and the answer varies dramatically between states.
Using the water is a separate doctrine
The right to access water is not the right to take it. Two systems divide the country:
Riparian use, predominant in the east, allows an abutting owner to make reasonable use of the water, measured against other riparian owners' equal rights. Rights are not lost through non-use.
Prior appropriation, predominant in the west, allocates by seniority of first beneficial use, without regard to whether the user abuts the water. Rights can be lost through abandonment or non-use, and they are frequently traded separately from land.
Several states operate hybrids. For a waterfront buyer intending to irrigate, fill a pond or draw for any commercial purpose, this is the question to resolve before purchase, because the answer may be that the water in front of the property is already fully allocated to someone upstream.
What to establish before buying
- Where the legal boundary sits, and whether the survey reflects the current water line.
- Whether the parcel has riparian or littoral status, or merely proximity — a road, a strip parcel or a railway easement between the land and the water destroys it.
- Whether an existing dock is permitted, and whether its lease is transferable.
- What public access rights exist over the shoreline.
- Whether the water is allocated, and under which doctrine.
- What the flood history and erosion trend are, because the boundary moves with them.
The second point is the one that catches buyers most often. A strip of land between a parcel and the water — however narrow, however old, however apparently abandoned — usually means the parcel has no riparian rights at all, and no amount of permitting will create them.
Two of these rights are tested most often at the water’s edge itself. What the public may do on the shore and what happens when a vessel is left on it are both answered by the same public trust reasoning that limits the private bundle.
Sources
- Cornell Legal Information Institute — Riparian Rights
The bundle of rights attaching to land abutting water, and their usufructuary nature.
- Cornell Legal Information Institute — Accretion
How gradual change moves a water boundary, and how avulsion does not.
- Cornell Legal Information Institute — Public Trust Doctrine
The state's trust interest in navigable waters and the beds beneath them.
- Cornell Legal Information Institute — Prior Appropriation Doctrine
The western water allocation system that displaces riparian use rights.
- NOAA — Shoreline Boundaries and Tidal Datums
How mean high water and related datums are computed and used as boundaries.
- U.S. Army Corps of Engineers — Regulatory Program
The permitting that constrains the right to build into the water.
Questions readers ask
Where does my property actually end at the water?
It depends on the water body and the state. On tidal water the boundary is commonly the mean high water line, with the foreshore held in public trust. On navigable fresh water it is frequently the ordinary high water mark, with the bed owned by the state. On non-navigable water the boundary may run to the centerline. Because the line is often a water feature rather than a monument, it can move over time.
Can I sell my dock rights to a neighbor without waterfront?
In most states, no. Riparian and littoral rights are appurtenant to the abutting land and cannot be severed from it, precisely to prevent a single waterfront lot from generating access rights for a subdivision behind it. A few states permit limited transfers or easements, and some allow shared use agreements among owners of the same parcel's frontage. This is a question to answer before buying a back lot advertised with lake access.
The shoreline has moved. Did my property change size?
If the change was gradual, yes. Accretion adds land to the parcel and erosion takes it away, and the boundary follows the water. If the change was sudden and perceptible — a storm cutting a new channel, a river avulsing to a new course — the old boundary generally stays where it was, even though the water is no longer there. That distinction decides a surprising number of waterfront disputes.
