The 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...

Southland’s physiographic zones allow us to better understand why we have variations in water quality in different areas. Southland has been divided into nine different zones according to factors such as soil type, geology and topography. We can then target solutions to higher risk areas as opposed to a region-wide, generalised approach. This layer was...

Gore Airshed Boundary For information about Southland's air quality visit Breathe Easy Southland - http://www.breatheeasysouthland.co.nz/

Invercargill Airshed Boundary For information about Southland's air quality visit Breathe Easy Southland - http://www.breatheeasysouthland.co.nz/

The 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:...

How this dataset was created A. A series of 31 satellite images was acquired between February and October 2017. These were from Sentinel-2A and -2B and Landsat-8. Each image was cloud-masked and then classified separately into land cover classes. B. A rule-set was used to draw together evidence from the time-series of 31 per-pixel land cover...

Tertiary aquifers are those that occur in older Tertiary age sedimentary deposits (between 66 and 2.6 million years old). Geological reports, maps, and borelogs have been used to identify discreet aquifer units within the Tertiary age geological formations that exist in Southland. These formations consist of a combination of terrestrial, intertidal and...

Within 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.

Drainage channel maintained by Environment Southland on behalf of the Ratepayers.

Floodway means an area managed by Environment Southland that has the effect or is intended to have the effect of regulating or controlling the flow or spread of flood water. Floodway areas are included in this layer, and in Appendix 2 of the bylaw. The areas are indicative, they are defined more precisely in the bylaw. The Southland Flood Control and...

Flood Protection maintained by Environment Southland on behalf of the Ratepayers.

Groundwater zones effectively encompass separate groundwater systems and are utilised as a framework for monitoring, investigation and management of groundwater resources in the Southland region. These groundwater zones are delineated on the basis of hydrogeological properties, geomorphology, groundwater - surface water interaction, observed variations in...

Groundwater zones effectively encompass separate groundwater systems and are utilised as a framework for monitoring, investigation and management of groundwater resources in the Southland region. These groundwater zones are classified into four basic aquifer types which aggregate spatially separate aquifer systems on the basis of similarities in...

The Topoclimate South Project was a community funded initiative established by local focus group "Crops for Southland".  The aim of the project was to provide detailed resource information for the Southland region at a scale of 1:50,000 to enable better land use decisions to be made. More information can be accessed...

Coastal Marine Area Landward Boundary points at key Southland rivers.The boundary between the Southland Coastal Plan and the Southland Water and Land Plan determines where the jurisdiction of one plan ends and the other starts, this is called the Coastal Marine Area (CMA) Landward Boundary. The ‘Southland Region Agreement for the Positions of River...

Existing and proposed Bore locations including attributes in the Southland region. Please ignore the system generated data updated (currently 29 Jun 2023). The data is updated every day. Please note the information extracted here is from numerous 3rd party sources that has not been fully verified by Environment Southland, for specific enquiries please...

The 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...

Southland's Freshwater Management Units (FMUs) have been set in accordance with the National Policy Statement for Freshwater Management 2014 (NPSFM, as amended in 2017). The six FMUs in Southland are Fiordland and Islands, Waiau, Aparima, Oreti and Mataura, with the addition of Waituna as a FMU following Environment Court appeals.   A...

The Southland Water and Land Plan seeks to address activities that are known to have a significant effect on water quality, such as land use intensification, wintering and stock access to waterways. In order to understand what the water quality is like in a catchment, the Schedule X – Catchments of degraded water bodies where improvement in water...

The Southland Water and Land Plan seeks to address activities that are known to have a significant effect on water quality, such as land use intensification, wintering and stock access to waterways. In order to understand what the water quality is like in a catchment, the Schedule X – Catchments of degraded water bodies where improvement in water...