Check the Setup
- Python 3.10 or newer
- An internet connection
- The requests Python package
Microproduct Data GuideIntermediate
IMGW Poland Hydrological Bulletins
Current official Polish hydrological warning bulletins from IMGW for reviewing affected regions, severity, and validity windows.
Report a ProblemAt a Glance
- Difficulty
- Intermediate — some data preparation helps
- Size
- Tiny · ≤0.01 GB
- Formats
- TXT
- Access
- Download
- API Key
- Not Required
- Provider
- Institute of Meteorology and Water Management
- Updates
- Near Real Time
- Last Verified
- Sep 28, 2026
- Source Type
- Government Source
- Python Syntax Checked
From Source to Product Signal
Test a Product Idea in Four Steps
IMGW publishes current hydrological bulletins as separate text files. Free access is limited to qualifying noncommercial analysis; commercial and specified sectoral uses can require an agreement and payment. Start with at most five listed bulletins and preserve issue and validity times. TravelCanary uses flood warnings and excludes drought notices in this shared directory. An empty directory is not the same as an API failure.
Access the Data
- 1.Read IMGW's access regulation and official current-bulletin listing.
- 2.Find one TXT bulletin in the current directory.
- 3.Inspect issue time, warning degree, affected region, and validity.
3
Run the Python Example
Install the packages, then run the notebook cell.
python -m pip install requests
import re
import requests
base = "https://danepubliczne.imgw.pl/data/current/ost_hydro/"
listing = requests.get(base, timeout=30)
listing.raise_for_status()
names = sorted(set(re.findall(r'href="([A-Za-z0-9_-]+\.TXT)"', listing.text)))
print(f"{len(names)} current bulletin files")
for name in names[:5]:
bulletin = requests.get(base + name, timeout=30)
bulletin.raise_for_status()
text = bulletin.content.decode("utf-8", errors="replace")
if "susza hydrologiczna" not in text.lower():
print(name, text[:400])
break
else:
print("No flood bulletin among the first five listed files")4
Test a Useful Signal
Inspect a Polish Hydrological Warning
Review one official text bulletin before region matching.
- 01Keep bulletin name, issue time, degree, region, and validity period.
- 02Detect revised and cancelled bulletins before current display.
- 03Explain why an absent bulletin is not a statement of future safety.
Dataset Details
Institute of Meteorology and Water Management is a government source. Last verified 2026-09-28. Temporal coverage: current official hydrological warnings.
Data Types
Tasks
Geography
Formats
Provider
Institute of Meteorology and Water Management
Data Terms
Free public access for qualifying noncommercial analysis; commercial and specified sectoral uses may require an IMGW agreement and payment.