The S+SNZ Hydrography Professional Stream (HPS) exists to represent and support those S+SNZ members who are either involved, or interested in hydrography.

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).

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

  • supporting safe and efficient navigation
  • port and shipping channel safety including monitoring tidal information and channel dredging
  • resource consent mapping and management
  • exploitation and management of fishing, minerals, and seabed resources
  • coastal zone management
  • positioning of oil-rigs, pipelines and sub-sea cables
  • environmental protection and management
  • maritime boundary delimitation
  • national marine spatial data infrastructures
  • recreational boating
  • design and engineering of dams and lakes for hydroelectric projects
  • land reclamation surveys.
  • information that support maritime defence, security and commercial fishing tsunami flood and inundation modelling
  • tourism.

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.


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