Coastal Hazard Assessment for Christchurch and Banks Peninsula (2017)
- Author
- Tonkin &; Taylor Ltd.
- Year
- 2017
- Journal / Source
- Report prepared for Christchurch City Council
- Number
- Job No. 851857.0040.v4
- Month
- October
- Summary
- Christchurch City Council (Council) commissioned Tonkin & Taylor Ltd (T+T) in 2015 to prepare a report and maps that identified areas susceptible to coastal hazards (inundation, erosion and sea level rise) for the main coastal settlements selected by Council. The report was subject to a detailed expert panel peer review in 2016. The present report updates the original 2015 report taking into account the recommendations of the peer review panel. The areas potentially susceptible to coastal hazards were termed coastal erosion hazard zones (CEHZ) and coastal inundation zones (CIHZ). The zones have been mapped over both a 50 year (approximately – taken to be 2065) and 100 year (taken to be 2120) planning time frame for both the open and harbour coast for four Intergovernmental Panel on Climate Change (IPCC) emission scenarios (median projections for RCP2.6, RCP4.5 and RCP8.5 and the 83rd percentile of RCP8.5).