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

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...

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...

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...

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...

The dams form part of Environment Southland's flood protection infrastructure. The flood protection network, including 458 km of stopbanks, 7 dams and associated culverts and structures protects major population centres, smaller townships and large swathes of rural production land. Environment Southland maintains four detention dams and three retention...

Farmer led community catchment groups have evolved in Southland over the last few years. They have a general purpose of increasing awareness and understanding of water quality issues and environmental policy changes through community engagement and information transfer. While each group is different, it is not a ‘one size fits all’ model, and they have...

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:...

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 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 Freshwater Management Units (FMUs) have been set in accordance with the National Policy Statement for Freshwater Management 2014 (NPSFM, as amended in 2017). The five FMUs in Southland are Aparima, Fiordland and Islands, Mataura, Oreti, Waiau. A freshwater management unit (FMU) is a concept used nationally to plan and manage freshwater. The...

Other confined aquifers exist in Southland but are not specifically acknowledged in regional plans due either small size or limited resource use. The Lumsden and North Range aquifers are situated in Quaternary age alluvial deposits. These accumulations of gravel, sand, silt and clay were lain down by rivers many years ago and are now buried below the...

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...

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...

The information provided is derived from Environment Southland's Selected Land Use Sites (SLUS) register only and is made available to you under the Local Government Official Information and Meetings Act 1987. Environment Southland has made every effort to ensure the accuracy of the location, extent, and relevant information about each HAIL activity on...

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...