Note: this guideline is issued by the Surveyor-General under section 7(1)(ga) of the Cadastral Survey Act 2002 about the Rules for Cadastral Survey 2010 and is not legally binding.

The following information relates to recording a water boundary in a CSD where erosion affecting the water boundary has occurred.

Where erosion has occurred, the Diagram of Survey and Diagram of Parcels must depict:

  • the erosion as a separate residue parcel, which must be described as erosion without any other description or appellation [r 9.6.3(h)(iii) and r 10.4.2(f)(iii)].  An area is not required,
  • the water boundary in its new position as an irregular line at a scale that clearly shows its shape and relationship to other boundaries [r 9.6.7(a)(i) and r 10.4.5(a)],
  • the former water boundary as an accepted irregular line boundary [r 6.3(b) and r 6.7(c)], and
  • the name or a simple description (such as sea, stream, river, or lake) for the water body that abuts the new erosion parcel r 9.6.3(h)(iv) and r 10.4.2(f)(iv)]

The erosion parcel must have the parcel intent hydro.

Diagram showing erosion as a residual primary parcel
Figure 1: Erosion as a residual primary parcel

Refer to Where current MHWM is inland from old MHWM because of erosion

Last Updated: 31 March 2017
Authority: Surveyor-General - Section 7(1)(ga) of the Cadastral Survey Act 2002
LINZ OP G : 00049