Greater Wellington Open Data
Greater Wellington Regional Council open data with live air quality, climate, groundwater levels, lakes/wetlands, rainfall, river/stream levels, tide levels and water quality plus a documented API and sandbox.
gw.govt.nz
At a glance
- Region
- New Zealand (Oceania)
- Coverage
- Wellington Region
- Access
- Free
- Category
- Government
- Last updated
- 2025
What's inside
- River Flow
- Groundwater
- Rainfall
- Water Quality
- Tide Levels
Terms explained
What you can do with it
Typical work that data of this type supports.
- 01
Design storms
Build rainfall intensity-duration-frequency curves for drainage design.
Because it has: Rainfall
- 02
Model input
Drive hydrological, crop and urban drainage models.
- 03
Trend hotspots
Find where water tables are falling year after year.
Because it has: Groundwater
Where AI adds value
Ideas for machine learning and AI agents built on this kind of data.
- 01
Downscaling
Turn coarse rainfall grids into field or ward scale estimates.
- 02
Gauge + satellite fusion
Correct satellite rainfall with gauges using machine learning.
- 03
Gap filling
Rebuild missing well readings from neighbours, rainfall and season.
Machine access and documentation
Open API
Documented REST API with sandbox environment
Licence: Open data
Listed in our registry of open water APIs, which WaterDataGPT can query live.
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