Hydrography Stream

The S+SNZ Hydrography Professional Stream (HPS) represents and supports S+SNZ members who are either involved or interested in hydrography.

Hydrography is the branch of applied sciences which deals with the measurement and description of the physical features of oceans, seas, coastal areas, lakes and rivers, as well as with the prediction of their change over time, for the primary purpose of safety of navigation and in support of all other marine activities, including economic development, security and defence, scientific research, and environmental protection.

Hydrography underpins almost every activity associated with water bodies (sea, lakes and rivers), including:

The HPS seeks to provide value to S+SNZ Members by:

  • establishing effective relationships and communication with relevant industry practitioners, central and local  government groups, professional bodies and training providers
  • advocating for HPS members and within the industry
  • assisting those HPS members seeking professional Hydrographic accreditation
  • supporting the S+SNZ continuing professional development (CPD) programmes to improve best hydrographic practice
  • facilitating communication between HPS members.


    The Stream's leadership team meets semimonthly to discuss current issues, update project progress, foster continuing professional development needs, liaise with other relevant national and international bodies and prepare relevant submissions on behalf of the Stream. The leadership team is:

    • Andrew Price, Ocean Infinity, Tauranga
    • Declan Stubbing, DML, Tauranga
    • Emily Tidey, University of Otago
    • Kevin Smith, DML, Tauranga
    • Rhys Davies, iXblue, Tauranga
    • Simon Ironside, Toitū Te Whenua LINZ, Christchurch (FIG Commission 4 representative)
    • Stuart Caie, Toitū Te Whenua LINZ, Wellington (S+SNZ Council representative and SSSI Hydrography Commission - National Committee representative).


        The Australasian Hydrographic Surveyors Certification Panel (AHSCP) is the recognised body that assesses applications for Specialist Certification in Hydrography, on behalf of the S+SNZ.


        World Hydrography Day is celebrated annually, on 21 June, to publicise and encourage increasing the coverage of hydrographic information on a global basis, (United Nations Resolution A/60/30 dated 29 November 2005). Each year celebrates a different theme, see the International Hydrographic Organization’s website for more information.

        Contact the Stream: hydrography@surveyspatialnz.org

        AHS Awards Nomination Letter 2023-2024

        205 KB
        28 Feb 2024
        AHS Awards Nomination Letter 2023-2024.pdf

        AHS Awards Scheme Policy

        362 KB
        28 Feb 2024
        AHS Awards Scheme Policy_v1_7_150124.pdf

        AHS Awards Scheme Policy Nomination Form

        214 KB
        28 Feb 2024
        AHS Awards Scheme Policy_v1_7_Nomination_Form.docx

        Hydrography 2024 Proposed Work Plan

        261 KB
        22 Feb 2024
        20240221_Hydro Stream Proposed Work Plan (1).pdf