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Southland Ground Shaking Amplification Risk (2006/2012)
Environment SouthlandThe amount of shaking felt in any given earthquake varies with the strength of the subsoil and underlying rock at the location. The soil and rock condition has been mapped as an indicator of the capacity for amplified shaking. Generally, floodplain soils have the potential to amplify shaking. As such, it is likely that in much of Southland the severity of...Created 10 September 2022 • Updated 3 March 2025 -
Southland Tsunami Evacuation Zones
Environment SouthlandThe dataset shows areas of populated places along the Southland coastline that should be evacuated when there is a tsunami up to 1 metre (red zone) or between 1 and 3 metres (orange zone). RED ZONE: Shore-exclusion zone. The highest risk and first place to evacuate from in any sort of tsunami warning (natural, unofficial or official).ORANGE ZONE:...Created 10 September 2022 • Updated 3 February 2025 -
Southland Significant Floodplains
Environment SouthlandWithin the floodplain areas, the likelihood of flooding varies considerably depending on the existence and standard of any flood alleviation works and the height of the particular site.Created 10 September 2022 • Updated 3 February 2025 -
Southland Liquefaction Risk (2006/2012)
Environment SouthlandThe awareness of liquefaction has increased markedly since the Christchurch earthquakes. It is basically an earthquake related process of turning a solid soil into a liquid and weaker state. It is most likely to occur in saturated sands and silts. Related to liquefaction is a process called lateral spreading, whereby land moves towards lower areas whilst...Created 10 September 2022 • Updated 3 February 2025 -
Environment Southland Significant Floodplains
Environment SouthlandWithin the floodplain areas, the likelihood of flooding varies considerably depending on the existence and standard of any flood alleviation works and the height of the particular site.Created 5 November 2018 • Updated 10 September 2020 -
Southland Tsunami Evacuation Zones
Environment SouthlandThe dataset shows areas of populated places along the Southland coastline that should be evacuated when there is a tsunami up to 1 metre (red zone) or between 1 and 3 metres (orange zone). RED ZONE: Shore-exclusion zone. The highest risk and first place to evacuate from in any sort of tsunami warning (natural, unofficial or official).ORANGE ZONE:...Created 18 June 2019 • Updated 10 September 2020 -
Southland Ground Shaking Amplification Risk (2006/2012)
Environment SouthlandThe amount of shaking felt in any given earthquake varies with the strength of the subsoil and underlying rock at the location. The soil and rock condition has been mapped as an indicator of the capacity for amplified shaking. Generally, floodplain soils have the potential to amplify shaking. As such, it is likely that in much of Southland the severity of...Created 10 September 2019 • Updated 10 September 2020 -
Southland Liquefaction Risk (2006/2012)
Environment SouthlandThe awareness of liquefaction has increased markedly since the Christchurch earthquakes. It is basically an earthquake related process of turning a solid soil into a liquid and weaker state. It is most likely to occur in saturated sands and silts. Related to liquefaction is a process called lateral spreading, whereby land moves towards lower areas whilst...Created 10 September 2019 • Updated 10 September 2020