NSW Fuzzy Extent Water Area is polygon feature class representing the approximate extents of formally named water features that have relatively indistinct name extent. Fuzzy extent water areas are divided into Bay like, River like and Sea like sub types.

Bay like class is defined as bay-like features, which includes Bays, Bights, Coves, Entrances, Gulfs, Harbours, Inlets, Ports and River Mouths.

River like is defined as a named river-like feature of indefinite name extent which includes Anabranch, Arm, Bend, Canal, Channel, Cowal, Passage, Reach, River Bend, River Feature, and Strait that have not been represented by another hydrographic feature class.

A sea like water body includes sea and ocean.