Microproduct Data GuideIntermediate

German LHP Flood Warnings

Current state flood-warning alerts from Germany's interregional LHP portal for reviewing official flood areas and update times.

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At a Glance

Difficulty
Intermediate — some data preparation helps
Size
Tiny · ≤0.01 GB
Formats
GeoJSON
Access
API
API Key
Not Required
Provider
Länderübergreifendes Hochwasserportal
Updates
Near Real Time
Last Verified
Sep 28, 2026
Source Type
Government Source
Data Terms
CC BY 4.0 with Länderübergreifendes Hochwasserportal attribution.
  • Python Syntax Checked

From Source to Product Signal

Test a Product Idea in Four Steps

The LHP public API returns current regional flood alerts as GeoJSON with update metadata and a CC BY licence link. Start with one response and inspect at most five features. An empty regional result must not be interpreted as a comprehensive flood all-clear.

1

Check the Setup

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

Access the Data

  1. 1.Read LHP's official portal and the licence advertised by its API.
  2. 2.Fetch a single current GeoJSON response.
  3. 3.Keep update time and geographic scope when showing an alert.
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://api.hochwasserzentralen.de/public/v1/data/alerts",
    params={"format": "geojson", "lang": "en"}, timeout=30,
)
response.raise_for_status()
data = response.json()
print(data["updated"], len(data["features"]))
for feature in data["features"][:5]:
    print(feature.get("properties", {}))
4

Test a Useful Signal

Inspect Regional Flood Alerts

Test the official alert snapshot for a small German flood map.

  1. 01Keep the snapshot update time, alert identifier, and geometry.
  2. 02Compare empty and populated states without inferring safety from either.
  3. 03Explain why official warnings differ from raw gauge levels and require attribution.

Related Datasets

Dataset Details

Länderübergreifendes Hochwasserportal is a government source. Last verified 2026-09-28. Temporal coverage: current regional flood warnings.

Geography

Germany

Formats

GeoJSON

Provider

Länderübergreifendes Hochwasserportal

Data Terms

CC BY 4.0 with Länderübergreifendes Hochwasserportal attribution.

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