National Audubon Society v. Superior Court (Supreme Court of California, 1983, 33 Cal.3d 419) was a key case in California highlighting the conflict between the public trust doctrine and appropriative water rights. The Public Trust Doctrine is based on the principle that certain resources (such as navigable waters) are too valuable to be privately owned and must remain available for public use. In National Audubon Society v. Superior Court, the court held that the public trust doctrine restricts the amount of water that can be withdrawn from navigable waterways. The basis for the Public Trust Doctrine goes back to Roman law. Under Roman law, the air, the rivers, the sea and the seashore were incapable of private ownership; they were dedicated to the use of the public. In essence, the publi