ANZLIC Metadata Profile: An Australian/New Zealand Profile of AS/NZS ISO 19115:2005, Geographic information - Metadata
Metadata Standard Version
Reference System Info
Reference System Identifier
NZ Bathymetric Data Index
This index enables you to identify the freely available bathymetric data held and used by LINZ on its NZ coastal nautical charts. Some of our data holdings date back to the 1930s. The polygons comprising the index show the extent of the survey datasets. The attributes attached to each polygon will enable you to view, amongst other attributes, the age and quality of the bathymetric data.
Please refer to the LINZ Bathymetric Index Data Dictionary for further information about the attributes of this dataset.
The bathymetric data is not downloadable from the LINZ Data Service. Datasets prior to the year 2000 are predominantly available only as georeferenced TIFF images of the original hard copy sounding sheets. Data post-2000 is often available as both georeferenced TIFF images and as digital data files (vector data in plain text format).
Requests for the bathymetric data should be sent to firstname.lastname@example.org with “Hydro Bathy Data” in the subject line. Requests must, as a minimum, specify the id, chart_no and serial_no as shown in the attributes attached to each polygon representing the datasets of interest.
LINZ also holds bathymetric data provided by third parties, which is subject to different licencing terms and conditions. View our "NZ Bathymetric Data Index – Third Party" dataset to request this data.
The purpose of this dataset is to provide an index to the bathymetric data held by LINZ and used on its series of NZ coastal nautical charts since October 2014. The index enables customers to identify data that they may be interested in requesting from LINZ for their own use.
Released under Creative Commons Attribution 4.0 International with:
Following Disclaimers: 1. Bathymetric datasets are provided by LINZ without warranty as to their accuracy and veracity 2. Users are expected to apply due diligence when using datasets which are provided on an errors and omissions excepted basis.
Following Attribution: If you publish, distribute or otherwise disseminate this work to the public without adapting it, the following attribution to Toitū Te Whenua Land Information New Zealand should be used: 'CC BY 4.0 Toitū Te Whenua Land Information New Zealand'
If you adapt this work in any way or include it in a collection, and publish, distribute or otherwise disseminate that adaptation or collection to the public, the following attribution to Toitū Te Whenua Land Information New Zealand should be used: 'Contains data sourced from the LINZ Data Service and licensed for reuse under CC BY 4.0.'
If "attribution stacking" problems exist then the requirement to display the above attribution statements is waived and in lieu the attribution statement is to be made in any terms or conditions associated with the work/ product/ application/ etc.
The Royal New Zealand Navy and, more recently, LINZ have been responsible for undertaking or commissioning hydrographic surveys to facilitate the production of nautical charts to enable New Zealand to meet its obligations under the International Convention for the Safety of Life at Sea.
Prior to the year 2000 the bathymetric data collected during hydrographic surveys was rendered only as sounding sheets in hard copy form, often as A1 (or larger) sheets. Post-2000 the bathymetric datasets have often been rendered as both sounding sheets and as digital data files. The sounding sheets have been scanned and georeferenced to make them available as TIFF images.
This index has been derived from extents and information derived from the bathymetric datasets used on NZ coastal nautical charts since October 2014. Some data on our nautical charts dates back to 1939, however, for all data since that date you will also need to refer to the NZ Scanned Sounding Sheet indexes.
With the exception of dense point cloud datasets, LINZ’s bathymetric data is usually based on minimum seabed depth (shoal-biased) values. This means if two soundings are close together we choose the lesser (shallower) one as safety is our primary concern.
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Released under Creative Commons Attribution 4.0 International