WatercourseLink

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.

WatercourseLink attributes

A segment that forms part of a watercourse.

flowDirection «voidable»

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 «voidable»

Length of network segment.

• Attribute name: length (GML), length (VectorTiles), length (GeoPackage), length (Esri shapefile)

• Type: Length

• Multiplicity: [1]

centrelineGeometry

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]

fictitious

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]

form «voidable»

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]

watercourseName

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]

watercourseNameAlternative

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]

startNode

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]

endNode

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]