The purpose of a CHRMAP is to provide long-term strategic guidance for coordinated, integrated and sustainable decision making for areas projected to experience coastal hazards. A CHRMAP makes recommendations for land use planning, management of and adaptation to these coastal hazard risks.
For the Back Beach, this includes avoiding locating assets in areas that will be vulnerable to coastal hazards, undertaking an audit of existing protection structures (such as the seawalls), monitoring coastal hazards, and undertaking detailed investigations into the feasibility of protection measures (such as seawalls, groynes or sand nourishment).
CHRMAPs consider projections over a 100-year timeframe. This means that some of the measures that are considered are a long way into the future, which is why the mapping in the CHRMAP shows a series of different ‘lines’. These lines reflect potential shoreline movement at approximate timeframes in the future (labelled 2020 – present day, 2035, 2050 and 2120). The lines closest to the coast indicate changes we anticipate in much shorter timeframes than 100 years – with the 2035 projection being within the next 10 years.
The FMP for the Back Beach is a recommendation of the CHRMAP. It will help the City develop short term strategies and management approaches to ensure safe and continued enjoyment of the coastline. These strategies and management approaches will be prepared to take into account the longer-term considerations of the CHRMAP.