CHMI Open Data Portal (Hydrology)
Open data service of the Czech Hydrometeorological Institute publishing historical and recent hydrological time series (daily/monthly/hourly discharge, water level, water temperature, groundwater) for stations across Czechia as machine-readable JSON files. Distinct from the CHMI flood-forecasting site (hydro.chmi.cz) already listed.
opendata.chmi.cz
At a glance
- Region
- Czech Republic (Europe)
- Coverage
- National
- Access
- Free
- Category
- Government
What's inside
- Streamflow
- Water Level
- Water Temperature
- Time Series
Terms explained
What you can do with it
Typical work that data of this type supports.
- 01
Design flows
Estimate 1-in-50 and 1-in-100 year floods for bridges, culverts and spillways.
Because it has: Streamflow
- 02
Low flows
Set environmental flows and check what is left in the river in a dry year.
- 03
Storage tracking
Follow storage and releases through the season.
Because it has: Water Level
Where AI adds value
Ideas for machine learning and AI agents built on this kind of data.
- 01
Flow forecasting
Train LSTM-style models on past records to forecast river levels and flow days ahead.
- 02
Ungauged basins
Combine with catchment data to estimate flow where there is no gauge.
- 03
Storage from space
Estimate volume from satellite water area and altimetry.
Machine access and documentation
Open API
Machine-readable endpoint on opendata.chmi.cz
Licence: CHMI Open Data terms
Listed in our registry of open water APIs, which WaterDataGPT can query live.
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