Hydrological Data Service for watercourses and lakes

Historical data from hydrometric stations on Swiss watercourses and lakes can be ordered from the Hydrological Data Service.

Records, some of which go back to the 19th century, are available both on paper and in digital format. Data can be obtained on water levels, discharge, sediment transport, temperatures and various physical and chemical water properties.

Station lists

The station lists provide you information on the status, measuring period, and measurement parameters of individual stations.

Recency and data quality levels ('release status')

A distinction is made between:

  • Raw data: unverified data from the last days can be found as graphics on the Internet.
  • Released provisional data, also called provisional data: verified but provisional digital data can usually be delivered after about one month. These data can also be retrieved in table form (pdf) via the Internet after about one month.
  • Released validated data, also called definitive data: definitive data from the report year can usually be released in the following year.

Raw data is measurement data that has not been checked. Raw data is checked in a first test step and, if necessary, corrected. After this process, the measurement data is called 'released provisional data'. A new check is carried out a year later and the stage-discharge relations are verified by means of further measurements in the field. After this second check, corrections may be necessary again. Final corrected data is called 'released validated data' or also 'definitive data'.


In general data are provided free of charge.

Special orders, which involve significant research and processing, are billed on the basis of actual costs. Billing is based on the FOEN's fees ordinance (Gebührenverordnung BAFU) and the federal administration's general fees ordinance (Allgemeinen Gebührenverordnung). 

Ordering data

We assist you in resolving your questions related to hydrological quantities. We advise you in the choice of stations and types of measurement, providing you the relevant data.

Please use the following form to place your order or send the necessary information to:

Data service Hydrology
Tel: +41 58 464 71 87

Delivery time

Please note that the processing of your request may take several days.

Ordering the data

Note: You will receive a confirmation after the form has been sent successfully. If this is not the case, please contact hydrologie@bafu.admin.ch directly with your order.

Delivery and billing address

I agree that my personal data may be processed in order to respond to my request. You can find more information in our privacy policy.

Further information

Last modification 12.02.2024

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