existenz.ch Data APIs - Swiss Hydrology & Environment
Open API aggregator exposing Swiss public environmental data, including hydrological data (river discharge, water level, water temperature) sourced from Swiss federal monitoring, as keyless JSON endpoints.
api.existenz.ch
At a glance
- Region
- Switzerland (Europe)
- Coverage
- Switzerland
- Access
- Free
- Category
- Company
- Last updated
- 2026
What's inside
- river discharge
- water level
- water temperature
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: river discharge
- 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
Keyless REST/JSON API at api.existenz.ch
Licence: Open data
Listed in our registry of open water APIs, which WaterDataGPT can query live.
Related water data
- CAMELS-CH Reproducibility Guide and Dataset (Switzerland)Europe | Free
- GKD Bayern - Bavarian Hydrological Service (Gewässerkundlicher Dienst)Europe | Free
- Rijkswaterstaat WaterWebservices - Dutch Water Data APIEurope | Free
- Swiss Federal Office for the Environment Hydrology DataEurope | Free
- Switzerland FOEN Hydro Linked Data Service (LINDAS)Europe | Free
- ADO Alpine Discharge & Water Level DatabaseEurope | Free
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