LIST Named Feature Extents depicts the spatial extent of a Named Geographic Feature, or other feature or place which is cannot be represented in any of the other LIST spatial data sets, in terms of a bounding polygon. This dataset has been developed primarily for internal use within Land Tasmania for recording and identification purposes for selected feature names. The data has been attributed with the Nomenclature Register Number (NOM_REG_NO), which is the Unique ID for the Feature Name which is held within the Placenames Tasmania (Nomenclature) database, and the feature name for those features which are designated for publication. Note that the Named Feature Extent dataset will also hold polygons for archived features which are not for publication. In these cases the NOM_REG_NO attribute will appear, however the feature name will be suppressed. Named Geographical features relating to relief and other natural features as well as places and some road features, that cannot be linked to a point, line or polygon in another LIST data set will be represent here. This includes Mountains, Bays, Estuaries, Valleys, Bends, Towns any many cultural features etc. Cultural features such as named buildings or infrastructure and city, suburb, town and locality names are also included with a location representing the label point of the feature for mapping purposes. The data set is held as polygons, and there will be overlaps between many of these features. Named places over and adjoining Macquarie Island are excluded from this dataset.

The LIST Named Feature Extent was initially created by indicating an approximate bounding polygon for the named features depicted on the TASMAP 1:25 000 Topographical Map Series. This dataset is continually being refined to improve the accuracy of the bounding polygon.

Position Accuracy: Areas depicted in the LIST Named Feature Extents will cover the approximate extent of the known geographical feature. In most cases there is no way to determine the exact extent of the areas and no absolute value can be defined. Where the extent of a feature can be well defined, the coverage will be more definitive. Attribute Accuracy: Not less than 99% of the attribute of Nomenclature Register Number will be correct. Logical Consistency: All polygons contain the Nomenclature Register Number of the feature within the Placenames dataset they relate to. Some archived feature names that relate to features which have been superseded or rescinded are restricted from delivery with this data as they are not to be used for any published products. Completeness: The LIST Named Feature Extent dataset exists for all geographic features within Tasmania but excluding Macquarie Island. Some cultural features may not yet be included, however a work program is in progress to capture these. Other Information: www.placenames.tas.gov.au