NZ Coastline - Mean High Water

Licence

Creative Commons Attribution 4.0 International

You may use this work for commercial purposes.

You must attribute the creator in your own works.

1517
210
Added
29 Oct 2020

This dataset was first added to LINZ Data Service on 29 Oct 2020.

This dataset defines the Mean High Water coastline of New Zealand and offshore islands at a scale of 1:50,000, and describes the type of coast along the coastline, for example, steep coast, mangrove, or stony shore.

Purpose
The NZ Coastline – Mean High Water dataset is the first step towards improving the national coastline data for New Zealand. LINZ is currently working on a long-term project, “Coastal Mapping” to capture a range of national coastlines derived from LiDAR and bathymetry. This will enable us to generate coastlines, for example, for Mean High Water Springs, Chart Datum and Highest Astronomical Tide. The project is currently focused on capturing LiDAR and bathymetry data, and the timeframe for delivering the new coastlines will be established once the data capture has progressed.

Status
This dataset was created from LINZ Hydrographic and Topographic sources in August 2020 and will not be maintained in this form. This dataset will be replaced by a more accurate dataset in the future once data becomes available through the Coastal Mapping project.

Data sources and preparation
The spatial coastline data (1:50,000 scale) is sourced from the Topo50 series where it is described as a line forming the boundary between the land and sea, defined by mean high water. The source polygon data has been broken up into line segments to enable a coastal classification to be attributed to each segment of coast. Coastal classification data is based on official Electronic Navigational Charts published by the New Zealand Hydrographic Authority. Not all segments have been assigned a coastal category.


APIs and web services
This dataset is available via ArcGIS Online and ArcGIS REST services, as well as our standard APIs.
LDS APIs and OGC web services
ArcGIS Online map services
ArcGIS REST API

Layer ID 105085
Data type Vector multilinestring
Feature count 16394
Services Vector Query API, Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

NZ Coastlines and Islands Polygons (Topo 1:50k)

Licence

Creative Commons Attribution 4.0 International

You may use this work for commercial purposes.

You must attribute the creator in your own works.

24619
6460
Updated
22 Feb 2021

This dataset was last updated on LINZ Data Service on 22 Feb 2021.

This provides a polygon coastline and islands layer which is based on the Topo50 products. It is a combination of the following layers:

This topographic coastline is the line forming the boundary between the land and sea, defined by mean high water.

Islands from the NZ Island Polygons layer that lie within the NZ Coastline and Chatham Islands areas (i.e. islands in lakes, rivers and estuaries) have been removed.

The GIS workflow to create the layer is:

  1. NZ Coastlines were converted from a polyline to a polygon using a polyline to polygon tool.
  2. The resulting coastal polygon was then used as an input into an erase tool and run against the NZ Island Polygon layer to remove all islands lying within the NZ Mainland and Stewart Island.
  3. This was then merged with the NZ Chatham Is island polygons (Topo, 1:50k) that have had the islands within the main island polygon removed, NZ Auckland Is Island Polygons (Topo, 1:50k), NZ Campbell Is / Motu Ihupuku Island, NZ Antipodes Is Island Polygons (Topo, 1:25k), NZ Kermadec Is Island Polygons (Topo, 1:25k), NZ Bounty Is Island Polygons (Topo, 1:25k) and NZ Snares Is / Tini Heke Island Polygons (Topo, 1:25k) layers using a merge tool.
  4. Lake Onoke from the NZ Lake Polygons (Topo 1:50k) layer and Te Whanga Lagoon from the NZ Chatham Is lagoon polygons (Topo, 1:50k) layer were then erased from the resultant polygon layer to include these two water bodies in the coastline definition.

For more detailed description of each layer refer to the layer urls above.


APIs and web services
This dataset is available via ArcGIS Online and ArcGIS REST services, as well as our standard APIs.
LDS APIs and OGC web services
ArcGIS Online map services
ArcGIS REST API

Layer ID 51153
Data type Vector multipolygon
Feature count 9132
Services Vector Query API, Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

NZ Shoal Polygons (Topo, 1:50k)

Licence

Creative Commons Attribution 4.0 International

You may use this work for commercial purposes.

You must attribute the creator in your own works.

17914
793
Updated
19 Feb 2021

This dataset was last updated on LINZ Data Service on 19 Feb 2021.

A submarine object over which the water is shallow, which is detached from the shore and whose bottom is visible at low water; may be a menace to navigation on the surface

Data Dictionary for shoal_poly: docs.topo.linz.govt.nz/data-dictionary/tdd-class-s...

This layer is 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 50343
Data type Vector polygon
Feature count 9
Primary key t50_fid
Services Vector Query API, Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

NZ Drain Centrelines (Topo, 1:50k)

Licence

Creative Commons Attribution 4.0 International

You may use this work for commercial purposes.

You must attribute the creator in your own works.

14099
2070
Updated
19 Feb 2021

This dataset was last updated on LINZ Data Service on 19 Feb 2021.

A channel which carries surface water.

Data Dictionary for drain_cl: docs.topo.linz.govt.nz/data-dictionary/tdd-class-d...

This layer is 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 50262
Data type Vector linestring
Feature count 43284
Primary key t50_fid
Services Vector Query API, Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

NZ River Centrelines (Topo, 1:50k)

Licence

Creative Commons Attribution 4.0 International

You may use this work for commercial purposes.

You must attribute the creator in your own works.

47964
15763
Updated
19 Feb 2021

This dataset was last updated on LINZ Data Service on 19 Feb 2021.

A natural, flowing body of water emptying into an ocean, lake or other body of water and usually fed along it's course by converging tributaries.

Data Dictionary for river_cl: docs.topo.linz.govt.nz/data-dictionary/tdd-class-r...

This layer is 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 50327
Data type Vector linestring
Feature count 712839
Primary key t50_fid
Services Vector Query API, Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

NZ Coastlines (Topo, 1:50k)

Licence

Creative Commons Attribution 4.0 International

You may use this work for commercial purposes.

You must attribute the creator in your own works.

40697
9920
Updated
07 May 2021

This dataset was last updated on LINZ Data Service on 07 May 2021.

The line forming the boundary between the land and sea, defined by mean high water.

Data Dictionary for coastline: docs.topo.linz.govt.nz/data-dictionary/tdd-class-c...

This layer is 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 50258
Data type Vector linestring
Feature count 35
Primary key t50_fid
Services Vector Query API, Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

NZ Canal Polygons (Topo, 1:50k)

Licence

Creative Commons Attribution 4.0 International

You may use this work for commercial purposes.

You must attribute the creator in your own works.

15739
1291
Updated
19 Feb 2021

This dataset was last updated on LINZ Data Service on 19 Feb 2021.

An artificial open waterway used for transportation, waterpower or irrigation.

Data Dictionary for canal_poly: docs.topo.linz.govt.nz/data-dictionary/tdd-class-c...

This layer is 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 50251
Data type Vector polygon
Feature count 88
Primary key t50_fid
Services Vector Query API, Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

NZ Canal Centrelines (Topo, 1:50k)

Licence

Creative Commons Attribution 4.0 International

You may use this work for commercial purposes.

You must attribute the creator in your own works.

20020
1136
Updated
19 Feb 2021

This dataset was last updated on LINZ Data Service on 19 Feb 2021.

An artificial open waterway used for transportation, waterpower or irrigation.

Data Dictionary for canal_cl: docs.topo.linz.govt.nz/data-dictionary/tdd-class-c...

This layer is 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 50250
Data type Vector linestring
Feature count 366
Primary key t50_fid
Services Vector Query API, Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

NZ Rock Polygons (Topo, 1:50k)

Licence

Creative Commons Attribution 4.0 International

You may use this work for commercial purposes.

You must attribute the creator in your own works.

14242
1524
Updated
19 Feb 2021

This dataset was last updated on LINZ Data Service on 19 Feb 2021.

Coastal rocks; rocks between high and low tide

Data Dictionary for rock_poly: docs.topo.linz.govt.nz/data-dictionary/tdd-class-r...

This layer is 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 50332
Data type Vector polygon
Feature count 6114
Primary key t50_fid
Services Vector Query API, Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

NZ Rock Points (Topo, 1:50k)

Licence

Creative Commons Attribution 4.0 International

You may use this work for commercial purposes.

You must attribute the creator in your own works.

13591
1045
Updated
19 Feb 2021

This dataset was last updated on LINZ Data Service on 19 Feb 2021.

An isolated rock or rock formation between high and low tides.

Data Dictionary for rock_pnt: docs.topo.linz.govt.nz/data-dictionary/tdd-class-r...

This layer is 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 50331
Data type Vector point
Feature count 1660
Primary key t50_fid
Services Vector Query API, Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed
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