WaterAreas Topo50

Licence

Creative Commons Attribution-No Derivative Works 3.0 New Zealand

You may use this work for commercial purposes.

You must attribute the creator in your own works.

You must not release derivatives of this work.

1860
71
Updated
07 Nov 2018

This dataset was last updated on NationalMap Data Service on 07 Nov 2018.

A subset of Critchlow NationalMap consisting of a combination of Water layers extracted from the LINZ web portal.

The combined Water layer consists of the following water body polygons :

  • River: natural, flowing body of water emptying into an ocean, lake or other body of water and usually fed along its course by converging tributaries.
  • Lake: any standing body of fresh inland water.
  • Pond: area of shallow water with walls or banks created for a specific purpose.
  • Reservoir: receptacle in which a large quantity of water is stored - Canal: artificial open waterway used for transportation, waterpower or irrigation.
  • Lagoon: sheet of salt water separated from the open sea by sand, shingle banks or a road embankment.

These layers are a component of the. Topo50 map series. The Topo50 map series provides topographic mapping for the New Zealand mainland, Chatham and New Zealand's offshore islands, at 1:50,000 scale. Further information on Topo50: www.linz.govt.nz/topography/topo-maps/topo50

Layer ID 87335
Data type Vector multipolygon
Feature count 69970
Services Vector Query API, Web Feature Service (WFS)

Lake

1067
199
Updated
04 Oct 2018

This dataset was last updated on NationalMap Data Service on 04 Oct 2018.

A subset of Critchlow NationalMap consisting of contextual lake polygons. Identifies the extent of lakes, lagoons, reservoirs, estuary areas and open bodies of water.

These are named major lakes derived by Critchlow from various paper map sources including street maps in city areas.

Layer ID 36573
Data type Vector multipolygon
Feature count 2299
Primary key ID
Services Vector Query API, Web Feature Service (WFS)

Riverbed

773
34
Updated
15 Jun 2017

This dataset was last updated on NationalMap Data Service on 15 Jun 2017.

A subset of Critchlow NationalMap consisting of Riverbeds represented by polygons to display true river width, derived by Critchlow from paper Topographic maps. Greater detail in City areas where applicable. Due to large braided stream networks, a river can often be seen as significantly less than its bed, in the dry season some tracks are located on river beds, these indicate the extent of the river at full capacity.

Layer ID 36583
Data type Vector multipolygon
Feature count 37
Primary key ID
Services Vector Query API, Web Feature Service (WFS)

RiverArea

604
44
Updated
07 Nov 2018

This dataset was last updated on NationalMap Data Service on 07 Nov 2018.

A subset of Critchlow NationalMap consisting of contextual river features (major rivers and tributaries) represented by polygon objects derived by Critchlow from paper Topographic maps (mainly LINZ). NB see RiverLine for line and polyline objects

These features indicate the location of rivers. Where significant flow or width and depth of a river is evident these are represented by polygons. Polygon segments are also evident in urban areas to provide a more complete representation. Line networks show rural or highland areas where flow is not significant. Rivers are named where available.

The rivers are each assigned a heirarchy based on the "Strahler" stream order classification, for simplicity, generally only heirarchies of three to eight have been included in this dataset.

Layer ID 36598
Data type Vector multipolygon
Feature count 6316
Primary key ID
Services Vector Query API, Web Feature Service (WFS)

RiverLine

446
46
Updated
07 Nov 2018

This dataset was last updated on NationalMap Data Service on 07 Nov 2018.

A subset of Critchlow NationalMap consisting of contextual river features (major rivers and tributaries) represented by line and polyline objects derived by Critchlow from paper Topographic maps (mainly LINZ). NB see RiverArea for area objects.

These features indicate the location of rivers. Where significant flow or width and depth of a river is evident these are represented by polygons. Polygon segments are also evident in urban areas to provide a more complete representation. Line networks show rural or highland areas where flow is not significant. Rivers are named where available.

The rivers are each assigned a heirarchy based on the "Strahler" stream order classification, for simplicity, generally only heirarchies of three to eight have been included in this dataset.

Layer ID 36599
Data type Vector multilinestring
Feature count 39568
Primary key ID
Services Vector Query API, Web Feature Service (WFS)