The WatercourseLink feature is a generalised representation of the watercourse alignment. WatercourseLink features are split where their real-world related attribution changes or where they meet to form a junction.
A segment that forms part of a watercourse.
Direction of water flow in the segment relative to digitisation of segment geometry.
Attribute name: flowDirection (GML), flow_direction (VectorTiles), flow_direction (GeoPackage), flow (Esri shapefile)
Type: LinkDirectionValue
Multiplicity: [1]
Length of network segment.
Attribute name: length (GML), length (VectorTiles), length (GeoPackage), length (Esri shapefile)
Type: Length
Multiplicity: [1]
The geometry that represents the centreline of the link.
Attribute name: centrelineGeometry (GML), Not provided (VectorTiles), Not provided (GeoPackage), Not provided (Esri shapefile)
Type: GM_Curve
Multiplicity: [1]
Indicator that the centreline geometry of the link is a straight line with no intermediate control points – unless the straight line represents the geography in the resolution of the data set appropriately.
Attribute name: centrelineGeometry (GML), Not provided (VectorTiles), Not provided (GeoPackage), Not provided (Esri shapefile)
Type: Boolean
Multiplicity: [1]
Classification of the type of watercourse that is formed by the WatercourseLink.
Attribute name: form (GML), form (VectorTiles), form (GeoPackage), form (Esri shapefile)
Type: WatercourseFormValue
Multiplicity: [1]
Recognised name assigned to the watercourse.
The language used to define the name shall also be provided as a three-digit ISO 639-2 code ('eng', 'cym' 'gla'). Note 2: Where a watercourse has a name in more than one language, this attribute will be the Welsh or Gaelic version.
Attribute name: watercourseName (GML), watercourse_name (VectorTiles), watercourse_name (GeoPackage), name1 (Esri shapefile)
Type: LocalisedCharacterString
Multiplicity: [0..1]
An alternative name of the main watercourse the link is part of. Note 1: The language used to define the name shall also be provided as a three-digit ISO 639-2 code ('eng', 'cym' 'gla').
Where a watercourse has a name in more than one language, this attribute will be the English version.
Attribute name: watercourseNameAlternative (GML), watercourse_name_alternative (VectorTiles), watercourse_name_alternative (GeoPackage), name2 (Esri shapefile)
Type: LocalisedCharacterString
Multiplicity: [0..1]
The HydroNode coincident with the first vertex for this WatercourseLink.
Attribute name: startNode (GML), Not provided (VectorTiles), start_node (GeoPackage), startNode (Esri shapefile)
Multiplicity: [0..1]
The HydroNode coincident with the last vertex for this WatercourseLink. On very rare occasions, the end HydroNode may be the same instance as the start HydroNode.
Attribute name: endNode (GML), Not provided (VectorTiles), end_node (GeoPackage), endNode (Esri shapefile)
Multiplicity: [0..1]