This data is part of the series of maps that covers the whole of Australia at a scale of 1:250 000 (1cm on a map represents 2.5km on the ground) and comprises 513 maps. This is the largest scale at which published topographic maps cover the entire continent. Data is downloadable in various distribution formats.

Land and Water Regional Plan Canterbury A3 map series grid.

Canterbury Three Waters Data consolidated from Canterbury's local authorities data feeds.(Currently updated monthly from the local council's data.)The data includes hyperlinks to the host dataset and webmap held at each local council.Line Datasets fields:AssetIDTypeDiameterMaterialLengthHyperlinkDistrictLoadedDateDepthPoint Datasets fields:AssetIDTypeMaterialLidLevelDepthHyperlinkDistrictLoadedDate

Environment Canterbury River Rating Districts - Capital Works GIS layer.

Canterbury Coastal Wetland Vegetation/habitats

Protected Recreational, Cultural or Historic Sites as represented by areas in map series 2 of the Canterbury Regional Coastal Environmnet Plan (RCEP) 2005.

Schedule 5 (Definitions of Areas and Sites) of the RCEP defines these areas in detail.

Social housing data for Canterbury City Council (September 2019)

This wetlands location information has been temporarily removed.This is to ensure we present information in a way that is consistent with the National Policy Statement for Freshwater Management 2020, which describes how regional councils should undertake mapping of wetlands.The temporary removal of this map has no bearing on our rules and Good Management Practices regarding wetlands – which must still be followed. Please visit the EnvironmentCanterbury website for more information.

If you need information or data about wetlands on your property, please contact Customer Services on 0800 324 636 or email ecinfo@ecan.govt.nz.Description:This geodatabase collates wetland location and extent information for Canterbury Region. Information comes from a variety of sources and has varying levels of detail or precision on features such as wetland location, extent, type, condition and ecological significance.The Canterbury Wetlands geodatabase distinguishes between ‘ground survey-detailed’, ‘ground survey–rapid’ and ‘aerial survey’ wetlands. At present, most of the mapped wetlands are in the ‘aerial survey’ category. Survey methodologies are described below.Initial database coverage of Canterbury Region was completed in March 2019. Updates and edits to the database are ongoing.Background:Canterbury has a wide variety of wetland types, reflecting diverse geography, hydrology and climate. The formal definition of wetlands in the Resource Management Act (1991) is “permanently or intermittently wet areas, shallow water or land/water margins that support a natural ecosystem of plants and animals that are adapted to living in wet conditions”. This definition is very broad and could be interpreted to include all waterbodies – springs, streams, rivers, lakes, estuaries, the marine environment. However, the ‘wetland’ habitats shown in this geodatabase share a number of environmental and ecological features that distinguish them from adjoining aquatic (and terrestrial) ecosystems. These are: Temporary or permanent shallow standing water and/or waterlogged soils; Temporary or permanent anaerobic conditions in the soil; Dominance by emergent aquatic plants.The Canterbury Wetlands geodatabase generally excludes streams, rivers, lakes and the Coastal Marine Area (CMA) as these waterbodies have been depicted in other datasets, although wetland habitats (as defined above) located on the margins of rivers, streams, lakes and the CMA are included. Nevertheless, wetlands, springs, streams, rivers, lakes, estuaries and the coastal marine environment are all waterbodies which merge into one another and are ecologically connected. We therefore recommend that the Canterbury Wetlands geodatabase is used in conjunction with other spatial information relating to the region’s waterbodies.Methodology:“Ground survey-detailed” wetlands have been field inspected and mapped/described in some detail. These ground surveys have mostly been carried out by Environment Canterbury staff, or wetland ground survey information provided by other agencies such as the Department of Conservation and the New Zealand Defence Force. Wetlands that have been ecologically surveyed and mapped as part of Resource Consent Applications may also be included in this category.For vegetated wetland survey areas, wetland boundaries are delineated where more than 50% of the dominant plant species from all vegetation strata are ‘Obligate’, ‘Facultative Wetland’ or ‘Facultative’ (i.e. the plant community is considered hydrophytic – Clarkson 2013). Descriptions of wetland hydrosystems, wetland class and vegetation types listed in the attributes tables for ground surveyed wetlands follow Johnson and Gerbeaux (2004), while assessment scores for wetland condition and threat follow Clarkson et al. (2003 & 2014). An assessment of ecological significance against Canterbury Regional Policy Statement criteria is also provided for “ground survey-detailed” wetlands.“Ground survey-rapid” wetlands have also been field inspected with the presence and extent of wetland habitats confirmed. Again, wetland boundaries are delineated where more than 50% of the dominant plant species from all vegetation strata are ‘Obligate’, ‘Facultative Wetland’ or ‘Facultative’ (Clarkson 2013).“Aerial survey” wetlands have been mapped by delineating the outline of known and likely/potential wetland habitats from the latest high-resolution aerial imagery available at the time of mapping. Characteristic vegetation types, colours, patterns, presence of visible water were used to identify wetlands on aerial photos, with hydrological and topographical information also considered. Note that precision limitations and uncertainties mean that there will be errors or omissions in this part of the dataset. We also did not attempt to map wetland habitats smaller than 50m and/or narrower than 5m by the ‘aerial survey’ method. For this reason, ‘aerial survey’ wetlands in this geodatabase should be used to indicate likely presence of wetlands but should not relied on to show precise extent of wetlands depicted, or location of all wetland habitats.Where available, existing ecological information for ‘aerial survey’ wetlands is noted in the attributes and the source referenced. However, for most ‘aerial survey’ wetlands, apart from date of base imagery and data capture, no further information is provided in the attributes.Currency:Current at time of survey date for ‘ground survey – detailed’ and ‘ground survey – rapid’ sites; current to date of aerial imagery for ‘aerial survey’ sites.Data owner:Environment CanterburyData interpretation and limitations:The Canterbury Wetlands geodatabase is not a ‘schedule’ in a plan and has not been tested through a statutory planning process. The GIS layer is not comprehensive, nor does it attempt to systematically apply the Canterbury Land and Water Regional Plan definition of ‘wetland’. Nor does it attempt to apply the definition of ‘natural wetland’ in the National Policy Statement-Freshwater Management (NPS-FM) or National Environmental Standards-Freshwater (NES-F). The database is not ‘locked in’ and can potentially be changed or updated with more information.Attributes of the Canterbury Wetlands geodatabaseNote: the attribute tables will only be complete for ‘ground surveyed – detailed’ wetlands.AREA NAMEName of wetland or survey area.HYDROSYSTEMWetland ecosystems are differentiated by landform and hydrological setting, and by water salinity, chemistry and temperature. Estuarine, riverine, lacustrine and palustrine hydrosystems have been recorded for ground-surveyed wetlands in Canterbury.SUBSYSTEMHydrosystems can be further described according to the water regime. Periodicity of inundation is the main feature e.g. permanent, seasonal, tidal, non-tidal, ephemeral.WETLAND CLASSMain wetland classes for Canterbury are swamp, marsh, fen, bog, seepage, shallow water, ephemeral wetland and saltmarsh.WETLAND FORMLandforms that wetlands occupy, and forms they create or contain.VEGETATION TYPEDominant vegetation type(s) within wetland. A general description of the growth form (or structure) and composition of the vegetation. For example: raupō reedland, saltmarsh herbfield, willow forest.SURVEY TYPE‘Ground survey-detailed’, ‘Ground survey-rapid’ or ‘Aerial survey’.SURVEY DATEDate of wetland ground survey or delineation by aerial survey.IMAGERY DATEDate of imagery used when delineating wetlands by aerial survey method.ECOLOGICAL SIGNIFICANCEAssessment of ecological significance for ground surveyed wetlands against Canterbury Regional Policy Statement (CRPS) criteria and associated guidelines (Wildland Consultants, 2013). Three level score:High: Meets one or more significance criteria; Regionally, Nationally or Internationally SignificantModerate: Meets one or more significance criteria; Locally SignificantLow: Does not meet any CRPS ecological significance criteriaWetland IDUnique wetland polygon identification numberDocument ID 1Hyperlink to wetland condition, threat and significance assessment (only for ‘ground survey – detailed’ wetlands).Document ID 2Hyperlink to historic wetland condition, threat and significance assessment (only for repeat ground survey-detailed wetlands). ReferencesClarkson BR, Sorrell BK, Reeves PN, Champion PD, Partridge TR, Clarkson BD. 2003. Handbook for monitoring wetland condition. Coordinated monitoring of New Zealand wetlands. A Ministry for the Environment SMF funded project. Ministry for the Environment, Wellington. 74pp.Clarkson BR. 2013. A vegetation tool for wetland delineation in New Zealand. Landcare Research contract report prepared for Meridian Energy Limited. 62pp.Clarkson BR, Fitzgerald NB, Overton JM 2014. A methodology for monitoring Bay of Plenty wetlands. Landcare Research contract report LC1779.Fraser S, Singleton P, Clarkson BR. 2018. Hydric soils – field identification guide. Landcare Research contract report LC3233.Johnson P. Gerbeaux G. 2004. Wetland Types in New Zealand. Department of Conservation. Wellington. 184pp.Wildlands Consultants. 2013. Guidelines for the application of ecological significance criteria for indigenous vegetation and habitats of indigenous fauna in Canterbury Region. Contract Report No. 2289i.

This geodatabase can be found internally as GIS.DBO.WETLANDS_NZTM_Canterbury_Wetlands_Updated2019

GIS layer showing significant indigenous aquatic, littoral and riparian vegetation of Canterbury water bodies. Prepared for Environment Canterbury Unpublished report U01/45 - Report Title - Significant indigeneous aquatic, littoral and riparian vegetation of Canterbury water bodies and factors that affect its composition and condition. Report prepared by R. B. Allen May 2000

Environment Canterbury River Rating Districts - Localised Drainage.

Environment Canterbury Land.

Groundwater is an important natural resource to humans and the environment. But due to rising populations, urbanization, increasing human activities on land, and other natural events, groundwater resources have been exposed to severe contamination and are degrading in supply.This WebMap is designed to help students understand an important initiative that Environment Canterbury are undertaking to combate groundwater pollution.The majority of the layers used in this WebMap were sourced or derived from geospatial data harvested from the Canterbury Maps open data site. The student worksheet that relates to this webmap can be accessed at https://arcg.is/1DTXXj0This is one of a series of maps created to support Geoinquiries developed with links to the NZ curriculum. Teachers can learn more at NEW ZEALAND GEOINQUIRIES https://arcg.is/1GPDXe

TEACHER MATERIALS - include answers to questionsStudents will describe how groundwater contamination is affecting the Canterbury Region in New Zealand. Groundwater is an important natural resource to humans and the environment. But due to rising populations, urbanization, increasing human activities on land, and other natural events, groundwater resources have been exposed to severe contamination and are degrading in supply.This worksheet is designed to help students understand an important initiative that Environment Canterbury are undertaking to combat groundwater pollution.Other New Zealand GeoInquiry instructional material freely available at https://arcg.is/1GPDXe

Mataitai Reserves as shown in Maps 9.2 and 9.3 of the Canterbury Regional Coastal Plan 2005.

Pest Districts boundaries utilised for Environment Canterbury Pest Rating.

Students will describe how groundwater contamination is affecting the Canterbury Region in New Zealand. Groundwater is an important natural resource to humans and the environment. But due to rising populations, urbanization, increasing human activities on land, and other natural events, groundwater resources have been exposed to severe contamination and are degrading in supply.This worksheet is designed to help students understand an important initiative that Environment Canterbury are undertaking to combat groundwater pollution.Other New Zealand GeoInquiry instructional material freely available at https://arcg.is/1GPDXe

Area representing the spoil dumping grounds in Lyttelton Harbour/Whakaraupo shown in Map 5.5 of the Canterbury Coastal Environment Plan (RCEP), which refers to the discharge of dredged material by or on behalf of the Lyttelton Port Company.

Northern Fan FMU as shown in the proposed Plan Change 5 to the Land & Water Regional Plan.

The proposed changes seek to deal with the management of the effects of land uses, particularly farming activities, on water quality throughout the Canterbury region and the management of water quality in the Waitaki sub-region, and flows in Whitneys Creek. Proposed Plan Change 5 comprises two parts. Part A consists of provisions which apply throughout the Canterbury region Part B consists of provisions that apply to the Waitaki sub-region only, and is proposed to be inserted as "Section 15B Waitaki Sub-region" into Section 15 of the Canterbury Land and Water Regional Plan.

This layer shows the areas vulnerable to groundwater contamination after taking into account the two soil properties (Soil Drainage Conditions and Soil Water Table Depth).

Higher values (coloured red) show the areas most vulnerable to groundwater contamination. Lower values (coloured green) show the areas least vulnerable to groundwater contamination.

Methodology

The Canterbury irrigated area dataset combines different data, including:

· farm boundary extents (land ownership and GIS data from Land Information New Zealand)

· high resolution aerial imagery and/or satellite photos

· resource consent data

· analysis of satellite data (using normalised different vegetation index (NDVI) imagery)

· agricultural production statistics (Statistics New Zealand).

A summary of the methodology, and tabulated irrigated area data for the Canterbury region and each of its ten water management zones, are found in the report: Canterbury detailed irrigated area mapping (2016). Prepared for Environment Canterbury by Aqualinc Research Limited.

By “irrigated area” we mean the area actually irrigated for productive gain, not the consented area.

Official Environment Canterbury Tech Report: https://api.ecan.govt.nz/TrimPublicAPI/documents/download/3010557