Kāpiti Coast coastal hazard susceptibility and vulnerability assessment. Volume 1: methodology
- Author
- Todd, D.; MacDonald, K.; Debski, D.
- Year
- 2021
- Journal / Source
- Jacobs New Zealand Limited report
- Publisher / Organisation
- Kāpiti Coast District Council
- Summary
- As part of their “Takutai Kāpiti: Our community-led coastal adaptation project”, the Kāpiti Coast District Council (KCDC) have initiated a Coastal Hazard Susceptibility and Vulnerability Assessment for the whole 38 km of the Kāpiti Coast District coastline from Ōtaki in the north to Paekākāriki in the south (Figure 1.1). The purpose of this assessment is to update previous coastal hazard assessments undertaken along the Kāpiti Coast District shoreline involving the identification of areas susceptible to current and future coastal erosion and inundation hazards, and having consideration of how these will interact with other hazards in the coastal environment including high groundwater levels, pluvial, and fluvial flooding. The outputs of the assessment include map overlays of coastal hazard susceptibility with various magnitudes of future sea level rise (SLR) and the vulnerability of key council infrastructure, community services and private property to those hazards, and a report detailing the methodology and limitations for undertaking the assessments. These outputs could be used by KCDC in a number of ways including; community awareness initiatives, for the development of future coastal asset planning and management strategies, as input into decision making of triggers and actions under dynamic adaptive planning pathways, and for the development of coastal hazard planning provisions in the Kāpiti Coast District Plan review. This methodology report has been externally peer reviewed by Beca and Greater Wellington Regional Council, and statements of review are attached at the rear of this report.