The preferred option for improving the harbour entrance is
to build a parallel groyne system and to dredge the
harbour entrance. Consent to start the work has been granted
and the District Council is now in the process of developing the
business case and seeking funding.
Preliminary options came after a two-stage feasibility report,
prepared by Dahm and Kench, which looked at improving access at the
mouth of the Ōpōtiki Harbour. The first stage of this
report was delivered in 2002, the second in 2004.
The preferred option was decided following a final report of the
project's modeling and preliminary design by DHI. The groyne
structure Preliminary Design Report suggests three potential
construction methods - Geotextile Core, Rubble Mound and
Concrete Sheet Piles.
Illustrations and details of the three design concepts are
contained in the Update newsletter - June
Further design investigations also have been made with the use
of steel sheet piles to construct the groynes.
The final choice as to the form of construction will be made at
the time the construction contract is awarded. By this process
further innovative forms, construction methods and value-for-money
considerations will be thoroughly assessed.
Duffill Watts has prepared a report to formally confirm the
navigation requirements including channel depth for the design of
the harbour entrance. This report forms part of the Modelling
Report (Volume 2) and can be downloaded from this website from the
Technical Data page.
Preferred Option | Options | Assessment of Effects