NZ Topo - object class siphon_pnt

This page describe the siphon_pnt object class used to represent objects in the NZTopo topographic database.


A pipe system comprising a rising leg and a falling leg, typically in the shape of an inverted U. Works on atmospheric pressure

Topo50 description

Only those significant by their size or location are held in the data and shown on the printed maps. Larger siphons are captured as polygon features

Representation specification

Representation specification showing siphon_pnt

Click to enlarge image

See also: canal_cl

Class attributes

Object classsiphon_pnt
Entity classSIPHON
Additional entity classNot applicable
Object inheritancegraphic_point
Entity sourceProposed NZ Std Entity
Map series Topo50
LSLIFF object class151

Object attributes

AttributeLSLIFF code
Shapefile field
Data type
Attribute descriptionAttribute values*
A unique identifier for use on Topo50 data in the LINZ Data Service. This is not a universal ID. The intention is to manage these ID’s as persistent, however this is not guaranteed and there will be instances where what appears to be a minor change to a feature may result in a new ID being assigned.

* See explanation of attribute values for more information about how attribute values are represented.

Change log

Feature versionRevisedDescription
42012-08-28Updated map image and aerial view; added representation specification and example feature photographs
32012-08-28Added scale-specific definitions
22001-11-23Unspecified update
11999-03-01intial status