Microproduct Data GuideIntermediate

OPW Ireland Water Levels

Provisional Irish gauge-level observations from the Office of Public Works for local river context and station monitoring.

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At a Glance

Difficulty
Intermediate — some data preparation helps
Size
Tiny · ≤0.01 GB
Formats
GeoJSON, CSV
Access
Download and API
API Key
Not Required
Provider
Ireland Office of Public Works
Updates
Near Real Time
Last Verified
Sep 28, 2026
Source Type
Government Source
Data Terms
CC BY 4.0 for eligible station numbers 00001-41000; attribute the Office of Public Works.
  • Python Syntax Checked

From Source to Product Signal

Test a Product Idea in Four Steps

OPW publishes a pre-generated GeoJSON snapshot of latest readings. Start with five eligible readings. Use that file for automated access and restrict republication to eligible station numbers 00001-41000. Measurements are provisional, relative to station gauge zero, and are not official flood warnings.

1

Check the Setup

  • Python 3.10 or newer
  • An internet connection
  • The requests Python package
2

Access the Data

  1. 1.Read the official API page, station eligibility rule, and CC BY terms.
  2. 2.Fetch the pre-generated latest-readings GeoJSON at a sensible interval.
  3. 3.Filter to eligible station numbers before using or republishing values.
Open Official Source
3

Run the Python Example

Install the packages, then run the notebook cell.

python -m pip install requests

import requests

response = requests.get("https://waterlevel.ie/geojson/latest/", timeout=30)
response.raise_for_status()
features = response.json()["features"]
eligible = [
    item["properties"] for item in features
    if 1 <= int(item["properties"]["station_ref"]) <= 41000
]
for item in eligible[:5]:
    print(item["station_ref"], item["datetime"], item["value"])
4

Test a Useful Signal

Check Recent Eligible Gauge Readings

Assess whether a small set of current gauges supports a factual river-level panel.

  1. 01Retain station and sensor IDs, timestamps, quality codes, and gauge units.
  2. 02Exclude out-of-range station references from republication.
  3. 03State that provisional gauge readings are not official flood warnings.

Related Datasets

Dataset Details

Ireland Office of Public Works is a government source. Last verified 2026-09-28. Temporal coverage: recent provisional gauge readings.

Geography

Ireland

Formats

GeoJSONCSV

Provider

Ireland Office of Public Works

Data Terms

CC BY 4.0 for eligible station numbers 00001-41000; attribute the Office of Public Works.

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