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Browse data ecan_liquefaction_polygon
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Canterbury liquefaction polygons

Regional liquefaction susceptibility polygons compiled from post-2010/2011 earthquake studies.

Licence: CC-BY 4.0
Source: ECan / Canterbury (opendata.canterburymaps.govt.nz), CC-BY 4.0.

Data as of 2026-06-13  · monthly  · 1,484 rows

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Showing 200 sample features
CRS
EPSG:4326

Centroids only — full geometry available via the API or CSV download.

Dataset ID
ecan_liquefaction_polygon
Data source
ECan / Canterbury
Last refreshed
2026-06-13
Refresh cadence
monthly

Columns (73)

schema glossary · auto-generated
Column Type Description
date string Observation date
object_id long Internal feature ID (ArcGIS OBJECTID)
fid_l3_eastern_canterbury_liquef double Feature ID l3 eastern canterbury liquef
perimeter_m double Perimeter m
area_ha double Area ha
liquefaction string Liquefaction
superseded string Superseded
fid_l7_selwyn_liquefaction_susce double Feature ID l7 selwyn liquefaction susce
id string ID
descrip string Descrip
perimeter_m_1 double Perimeter m 1
area_ha_1 double Area ha 1
liquefaction_susceptibility string Liquefaction susceptibility
superseded_1 string Superseded 1
fid_l31_ashburton_liquefaction_v double Feature ID l31 ashburton liquefaction v
liq_cat string Liq cat
descrip_1 string Descrip 1
detail string Detail
author string Author
report string Report
purpose string Purpose
notes string Notes
district string District
fid_l9_timaru_liquefaction_vulne double Feature ID l9 timaru liquefaction vulne
descriptio string Descriptio
f2020_vul_c string F2020 vul c
subdiv string Subdiv
imp_infra string Imp infra
build_cons string Build cons
fid_l29_mackenzie_liquefaction_v double Feature ID l29 mackenzie liquefaction v
liq_cat_1 string Liq cat 1
detail_1 string Detail 1
date_1 string Date 1
author_1 string Author 1
purpose_1 string Purpose 1
descrip_12 string Descrip 12
report_1 string Report 1
notes_1 string Notes 1
district_1 string District 1
fid_l28_waimate_liquefaction_vul double Feature ID l28 waimate liquefaction vul
object_id_1 double Object ID 1
liq_cat_12 string Liq cat 12
descrip_12_13 string Descrip 12 13
detail_12 string Detail 12
date_12 string Date 12
author_12 string Author 12
report_12 string Report 12
purpose_12 string Purpose 12
notes_12 string Notes 12
fid_l30_waitaki_liquefaction_vul double Feature ID l30 waitaki liquefaction vul
liq_cat_12_13 string Liq cat 12 13
detail_12_13 string Detail 12 13
date_12_13 string Date 12 13
author_12_13 string Author 12 13
purpose_12_13 string Purpose 12 13
descrip_12_13_14 string Descrip 12 13 14
report_12_13 string Report 12 13
notes_12_13 string Notes 12 13
district_12 string District 12
fid_l14_liquefaction_vulnerabilit double Feature ID l14 liquefaction vulnerabilit
study_date string Study date
author_12_13_14 string Author 12 13 14
rept_ref string Rept ref
purpose_12_13_14 string Purpose 12 13 14
purp_oth string Purp oth
base_inf string Base inf
uncert string Uncert
notes_12_13_14 string Notes 12 13 14
detail_12_13_14 string Detail 12 13 14
liq_cat_12_13_14 string Liq cat 12 13 14
shape_area double Polygon area (source projection units)
shape_length double Geometry length/perimeter (source projection units)
geometry_wkt string Geometry as WKT (WGS84) — MULTIPOLYGON/POINT/LINESTRING

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API endpoint (for developers): https://api.eolas.fyi/v1/datasets/ecan_liquefaction_polygon/data
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