Williams v Booth

This case concerned an appeal from a decision of the Supreme Court of New South Wales regarding the interpretation of two Crown grants issued in 1819 and 1834. The grants conveyed parcels of land to the predecessors in title of the plaintiff, James Leslie Williams, which were described as being bounded by a salt water lagoon and the sea. The dispute arose over whether the bed of this lagoon was included in the grants, or if it remained the property of the Crown. The plaintiff also argued that, in the alternative, he had acquired title to the lagoon bed through accretion.

The legal issues before the court were primarily twofold: first, the proper construction of the Crown grants and whether the descriptions of the boundaries, specifically "by that lagoon and the sea" and "by that lagoon to the sea," encompassed the bed of the salt water lagoon; and second, whether the doctrine of accretion applied to the lagoon bed, thereby granting ownership to the plaintiff. This involved considering the applicability of the *medius filus* rule to marine lagoons and the nature of accretion in the context of a lagoon's connection to the sea.

The High Court of Australia, in allowing the appeal, held that the intention of the parties, as expressed in the language of the Crown grants, was that the land granted did not extend beyond the margin of the lagoon. The descriptions clearly indicated the lagoon and the sea as boundaries, implying a continuous connection between them. The Court found that the *medius filus* rule, which presumes ownership to the middle thread of a waterway, was not applicable to marine lagoons, particularly given their potential public use for fishing and navigation. Furthermore, even if the lagoon had become permanently landlocked, the Court determined that this did not constitute accretion in the legal sense, as any gain of land would have been sudden and considerable, rather than gradual and imperceptible, thus belonging to the Crown.

The Court reversed the decision of the Supreme Court, ordering that the plaintiff's claim to the lagoon bed under the grants and by accretion failed. However, the Court also provided for the possibility of the plaintiff amending his pleadings to pursue a claim for any land added to his property by true accretion, if he so advised within a specified period, to avoid further litigation.