NSW Foundation Spatial Data Framework - Water - NSW Coastline

NSW Coastline data is linear feature class defining the line of contact between a body of water and the land. In particular, the line delineating the interface between land, internal waters and the “Territorial Sea” as defined by the Seas and Submerged Lands Act - No. 161 of 1973.\r\n\r\nThe coastline defining Mean High Water Mark (MHWM) does not include MHWM within estuaries.\r\nFeatures within coastline feature class include: mean high water mark and mean low water mark.

NSW海岸线数据属于线性要素类（linear feature class），用于界定水体与陆地的接触界线。具体而言，该界线划定了陆地、内水与领海（Territorial Sea）之间的界面，其界定依据为《1973年第161号海洋与淹没土地法》（Seas and Submerged Lands Act - No. 161 of 1973）。

用于界定平均高潮位（Mean High Water Mark, MHWM）的海岸线，不涵盖河口湾范围内的平均高潮位。该海岸线要素类包含的要素有：平均高潮位与平均低潮位（Mean Low Water Mark）。