Which doctrine governs water rights for landowners along a river?

• A. Riparian Rights
• B. Littoral Rights
• C. Riparian-Rights Doctrine
• D. Public Trust Doctrine

Answer: (C)

Water rights for landowners along a flowing watercourse are governed by the riparian-rights doctrine. This principle ties ownership of water to land that borders a river, granting the nearby landowner the right to reasonable use of the water for legitimate purposes (domestic use, irrigation, etc.) as long as that use doesn’t unreasonably harm neighboring riparian owners or downstream users. The key idea is that these rights are appurtenants of the land and are limited by a standard of reasonableness, not by an absolute claim to the entire stream. This distinguishes it from littoral rights, which apply to land along standing bodies of water like lakes or seas, where the water is not flowing past the property in the same way. The Public Trust Doctrine is a broader state principle about certain waters being held in trust for public use, which can constrain private rights but does not define the specific allocation among riparian landowners. The formal name of the doctrine in this context is the Riparian-Rights Doctrine.