The Coastal Hazard Assessment Report was presented at this morning's District Plan Review Subcommittee, as part of the proposed Stage Three Natural Hazards chapter.
The report, by environmental engineers Tonkin & Taylor Ltd, reviews the existing coastal hazard zones for southern Pegasus Bay and identifies coastal settlement areas susceptible to inundation and erosion around Lyttelton and Akaroa harbours, over a 50 and 100 year timeframe.
"This report provides us with essential information to consider in our current planning, so the timing is crucial as we continue our District Plan Review process, which includes a specific focus on coastal hazards," says Mayor Dalziel.
"Coastal communities all around the world are facing the challenges of climate change and sea-level rise. Here in Christchurch, there is often confusion about our coastline, because it is currently accreting, with periods of erosion from storm events. However, the long-term trend is of a shoreline moving further inland, and this is the trend we need to plan for.
Unit Manager Natural Environment and Heritage Helen Beaumont says the report is the latest in a series commissioned by the Council over a period of years to gain a comprehensive understanding of sea-level rise and its potential effects.
"The report released today includes the latest predictions on sea-level rise, and how this could impact our coastal areas in coming years.
"We appreciate this is difficult information for residents and communities, but you only have to look at recent storm events around the world, and here in New Zealand, to realise these are issues that can't be ignored."
The coastal hazard assessments in the report will be used to support Stage Three of the proposed Christchurch Replacement District Plan, which will be notified on July 25. The community will then have an opportunity to make submissions on the proposals.
To read the Coastal Hazard Assessment Report and for more information on coastal hazards visit www.ccc.govt.nz/coastalhazards