Coastal Restoration Trust of New Zealand

Coastal Dune Ecosystem Reference Database

Te Horo Beach coastal hazards

Year
2024
Publisher / Organisation
Kapiti Coast District Council
Summary
Key findings • The coastline at Te Horo Beach has a good sediment supply that has historically resulted in shoreline growth. • If this trend continues, only a small amount of erosion is projected to occur under low relative sea level rise (RSLR) scenarios associated with extremely large storms. However, the shoreline is projected to erode under higher RSLR scenarios over the next 50–100 years. • For coastal flooding, Te Horo Beach settlement is protected by a low gravel ridge but is susceptible to flooding through a pathway up the Mangaone Stream and from wave overtopping. • Under higher RSLR scenarios, properties within the settlement become susceptible to coastal flooding, as well as low-lying farmland behind the settlement and the main evacuation route out of Te Horo Beach.