Land records · Parcel maps · October 6, 2026
What Are Riparian Rights? Waterfront Property Basics
What are riparian rights? Rights of owners along rivers and streams to access and reasonably use the water, and how they differ from littoral rights.
What are riparian rights? Riparian rights are rights held by owners of land that borders a river, stream, or other watercourse. They typically include access to the water, reasonable use of it, and the right to have the water flow past the land without unreasonable interference. Owners along lakes and seas have similar rights often called littoral rights. These rights are tied to the land and usually pass with it when it is sold. This page is general land-records background, not legal advice.
Riparian vs littoral
| Term | Water body |
|---|---|
| Riparian | Rivers and streams (flowing water) |
| Littoral | Lakes, ponds, seas, oceans (standing water and shores) |
Many people use “riparian” for both.
Common riparian rights
- Access to the water from the land.
- Reasonable use for domestic needs, and in some states irrigation.
- Docks and piers, subject to permits.
- Accretion: gradual additions of soil may belong to the owner. See what is avulsion for sudden changes.
- Unobstructed flow without unreasonable diversion upstream.
Two water law systems
Eastern states generally follow the riparian doctrine, where owners along water share reasonable use. Many western states follow prior appropriation, “first in time, first in right,” where water rights come from permits and historic use, not land ownership. Some states mix the two. In prior appropriation states, owning waterfront land does not automatically give a right to divert water.
Where the property line is
Ownership along water depends on whether the water is navigable and state law. For navigable waters, the state often owns the bed up to a line such as ordinary high water or mean high water. Private owners may own to that line. For non-navigable streams, owners may own to the center. See what is mean high water and what is a riparian lot line.
Meander lines
Government surveyors ran meander lines along larger water bodies to calculate acreage, not to set the boundary. The water itself usually controls. See what is a meander corner.
Limits on riparian rights
- Permits for docks, seawalls, dredging, and fill, often from state and federal agencies.
- Public trust rights in navigable waters, such as fishing and navigation.
- Reasonableness: one owner’s use cannot unreasonably harm others.
- Environmental rules on buffers and shoreline vegetation.
Severing riparian rights
In some states, riparian rights can be limited by deed or subdivision, such as a lot that does not touch the water but has an easement to a shared dock. Read plats and deeds to see what rights come with a lot.
Before buying waterfront
Check the plat for the water boundary, any easements or HOA rules about docks, flood zones, and state permit requirements.
Bottom line
Riparian rights let owners along rivers and streams access and reasonably use the water; littoral rights cover lakes and shores. Eastern states usually follow riparian rules, while many western states use prior appropriation. Property lines along water depend on navigability and state law. Find county plats via the Platbookmapper map.
What are riparian rights FAQ
What are riparian rights in real estate?
Rights of owners along a river or stream to access and reasonably use the water.
What is the difference between riparian and littoral rights?
Riparian rights apply to flowing water; littoral rights apply to lakes and seas.
Do riparian rights transfer when I sell?
Generally, yes. They are tied to the land.
Can I build a dock with riparian rights?
Often, but permits from state or federal agencies are usually required.
Do western states recognize riparian rights?
Many use prior appropriation instead, where water rights come from permits and historic use.