The Dunedin City Council plans to have detailed designs ready
soon for a buried backstop wall to protect sand dunes at St
Councillors will decide when the wall will be built, but
designs for budgets and information for a consent application
are important if it is needed earlier than expected, parks
and recreation staff say.
A long-term plan approved in July 2012 for protecting the
coastline along the Ocean Beach Domain, between St Clair and
Lawyers Head, suggests the backstop wall should be in place
within 10 years.
But parks manager Lisa Wheeler said contingency money for
storm repairs had been carried over for the past several
years and there was enough spare in the kitty, about
$200,000, to do the design work.
The council has not yet budgeted any money for the wall's
Only the first 300m of the wall, from the end of the St Clair
sea wall, would be designed at this stage.
That section of the dune system was the top priority, given
its steepness and susceptibility to erosion, and the real
estate it was protecting.
Council transportation staff raised the work with councillors
this week, as a possible solution to concerns about building
a shared cycle/pedestrian path in Victoria Rd.
They said the dune protection wall could result in a more
''flat-top'' dune, along which an alternative cycleway could
be built ''in the next few years''.
Ms Wheeler said it was likely, in the long-term, a
combination of a buried wall and management retreat would be
used to protect the remainder of the dunes towards Lawyers
She was writing the brief for the design for the first
section of the wall, and hoped someone would be engaged to
begin the design work within the next few months.