Browse data › ECan / Canterbury › Canterbury tsunami evacuation zones (Blue zone)

Canterbury tsunami evacuation zones (Blue zone)

ecan_tsunami_blue_zones

Current Canterbury Civil Defence tsunami evacuation zones (October 2026 onwards): for each district (Waimakariri, Christchurch, Selwyn, Ashburton, Timaru, Waimate, Hurunui, Kaikōura, Mackenzie, Marlborough), the Blue tsunami evacuation zone to leave after a long or strong earthquake or an official warning, and the area outside it.

Published by Canterbury Maps Partners.

Source: ECan / Canterbury ↗ ·Licence: CC-BY 4.0 ·Last updated: 2026-10-21 ·Updated monthly ·18 rows

install.packages("eolas", repos = c("https://phildonovan.r-universe.dev", "https://cloud.r-project.org"))
library(eolas)
eolas_key("your_key")
df <- eolas_get("ecan_tsunami_blue_zones", start = "2020-01-01")
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Map preview
Showing 18 sample features
CRS
EPSG:4326

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

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Dataset ID
ecan_tsunami_blue_zones
Data source
ECan / Canterbury
Pipeline last ran
2026-10-21
Refresh cadence
monthly
API endpoint
https://api.eolas.nz/v1/datasets/ecan_tsunami_blue_zones/data

Columns (9)

schema glossary · auto-generated
Column Type Description
object_id long Internal feature ID (ArcGIS OBJECTID)
district string District
createdby string Createdby
createddat string Createddat
description string Description
zone string Zone
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

How to query this dataset

Install the client library
install.packages("eolas", repos = c("https://phildonovan.r-universe.dev", "https://cloud.r-project.org"))
Fetch all data
library(eolas)
eolas_key("your_key_here")
df <- eolas_get("ecan_tsunami_blue_zones")
head(df)
Filter by date range
df <- eolas_get("ecan_tsunami_blue_zones", start = "2020-01-01", end = "2024-12-31")
head(df)
Download as CSV
df <- eolas_get("ecan_tsunami_blue_zones")
write.csv(df, "ecan_tsunami_blue_zones.csv", row.names = FALSE)

Data preview

Hidden in preview: geometry_wkt — fetch via the API or download CSV to get the full data.
Object IdDistrictCreatedbyCreateddatDescriptionZoneShape AreaShape Length
1KaikōuraCanterbury Maps Partners2026-10-01Evacuate if you feel a long (more than a minute) OR strong (hard to stand up) earthquake, or if you are told to in an official tsunami warning.Blue tsunami evacuation zone105,152,435.0181309,850.1160
2HurunuiCanterbury Maps Partners2026-10-01Evacuate if you feel a long (more than a minute) OR strong (hard to stand up) earthquake, or if you are told to in an official tsunami warning.Blue tsunami evacuation zone98,637,174.0986331,128.4166
3SelwynCanterbury Maps Partners2026-10-01Evacuate if you feel a long (more than a minute) OR strong (hard to stand up) earthquake, or if you are told to in an official tsunami warning.Blue tsunami evacuation zone203,471,016.0249112,553.6699
4ChristchurchCanterbury Maps Partners2026-10-01Evacuate if you feel a long (more than a minute) OR strong (hard to stand up) earthquake, or if you are told to in an official tsunami warning.Blue tsunami evacuation zone438,075,779.3633785,241.8352
5AshburtonCanterbury Maps Partners2026-10-01Evacuate if you feel a long (more than a minute) OR strong (hard to stand up) earthquake, or if you are told to in an official tsunami warning.Blue tsunami evacuation zone43,858,270.2085192,438.5915

Showing 5 sample rows. Get an API key to access the full dataset.

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Questions about this dataset

How often is Canterbury tsunami evacuation zones (Blue zone) updated?
ECan / Canterbury publishes it monthly. eolas last refreshed it on 2026-10-21.
Can I download the whole table?
Yes, on Pro and above as Parquet or CSV. During the trial you can query it through the API, up to 50,000 rows per request.
Where does the data come from?
ECan / Canterbury. eolas loads it into typed, consistently named columns. See the original at https://opendata.canterburymaps.govt.nz.

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