NAQUA update


NAQUA update

The latest findings of the NAQUA National Groundwater Monitoring show that nitrate and pesticide metabolites continue to impair groundwater quality in large areas on the Swiss Plateau.

New Hydrodata Portal

"" in a new design

05.07.2023 - The portal "" has a new look: hydrological data and forecasts as well as flood alert appear in a new design. The site has been completely revised and new content has been added. 

WMO Award

Station Sitter Appenzell

Hydrological measuring stations awarded by the WMO

05.07.2023 - The FOEN hydrological measuring stations Thur-Andelfingen, Birs-Münchenstein and Sitter-Appenzell have been awarded as Centennial Observing Stations in May 2023.

'SeeWandel' research project


End of 'SeeWandel' international research project

13.06.2023 - Since 2018, researchers from three countries have been studying how Lake Constance is responding to nutrient decline, invasive species and climate change. The results, which show that these stress factors have a significant impact on the ecosystem, will be presented and discussed at two events in Constance to mark the end of the project.

Hydraulic engineering and ecology

Riverscape – sediment dynamics and connectivity

The research project ‘Riverscape – sediment dynamics and connectivity’ combines the topics of hydraulic engineering and ecology. Researchers have worked together to establish fundamental principles and propose solutions for the restoration of sediment dynamics and habitat connectivity. The most important results relevant to practice are presented in this publication.

At a glance

Water flow and flow regime

Water supply depends on natural factors and is influenced by hydropower production and climate change. The FOEN is monitoring the water flow and flow regime of Swiss bodies of water. 

Monitoring data and statistics

Current monitoring data on bodies of water, the possibility of obtaining data, information about extreme value statistics and data on the water withdrawn and returned

State of waterbodies

Despite the generally good quality of its water, residues from fertilizer and plant protection products, chemical residues from wastewater, as well as man-made structures and artificial obstacles damage surface and underground waters.

Ground water

Good quality groundwater is available in sufficient quantities almost everywhere in Switzerland. Traces of artificial, rather persistent substances are found mainly below cropland and in settlement areas.

Current news

All news

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