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Regional liquefaction susceptibility polygons compiled from post-2010/2011 earthquake studies.
Data as of 2026-06-13 · monthly · 1,484 rows
Centroids only — full geometry available via the API or CSV download.
| 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| superseded | string | Superseded |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| superseded_1 | string | Superseded 1 |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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