Federal Office for the Environment FOEN

The federal environmental authority. It is responsible for ensuring that natural resources are used sustainably, that the public is protected against natural hazards, and that the environment is protected from unacceptable adverse impacts.

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NQStat low-flow statistics

Federal Office for the Environment FOEN
Regions and cities, Environment

A wide variety of parameters may be used to describe low-flow events. The FOEN Hydrology Division's low-flow statistics are based on the recommendations of the German Association...

Last updated: January 1, 2008
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Topographical catchment areas of Swiss waterbodies 2 km²

Federal Office for the Environment FOEN
Regions and cities, Environment

The data set ‹sub-basins 2 km²› is the central element of the geodata set. It is made up of a comprehensive mosaic of over 22,000 topographically defined sub-basin areas that can...

Last updated: July 1, 2010
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Assessment of the Chemical Water Status: Ammonium

Federal Office for the Environment FOEN
Regions and cities, Environment

Within the National Surface Water Quality Monitoring Programme (NAWA), water quality is recorded jointly by the federal and cantonal authorities at around 100 monitoring...

Last updated: March 26, 2014
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Assessment of the Chemical Water Status: Dissolved Organic Carbon (DOC)

Federal Office for the Environment FOEN
Regions and cities, Environment

Within the National Surface Water Quality Monitoring Programme (NAWA), water quality is recorded jointly by the federal and cantonal authorities at around 100 monitoring stations....

Last updated: March 26, 2014
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- environment
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Bathing water quality

Federal Office for the Environment FOEN
Regions and cities, Environment

Assessment of bathing water quality is carried out on the basis of cantonal water monitoring data relating to the hygienic parameters E. coli and intestinal enterococci (faecal...

Last updated: December 31, 2024
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- gewiss
Topographical catchment areas of Swiss waterbodies: Area outlets

Federal Office for the Environment FOEN
Regions and cities, Environment

The "Area outlets" data set is part of the "Topographical catchment areas of Swiss waterbodies" geodata set. It consists of point objects that represent the area outlets for a...

Last updated: July 1, 2010
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Assessment of the Chemical Water Status: Total Phosphorus

Federal Office for the Environment FOEN
Regions and cities, Environment

Within the National Surface Water Quality Monitoring Programme (NAWA), water quality is recorded jointly by the federal and cantonal authorities at around 100 monitoring stations....

Last updated: March 26, 2014
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FOEN basic monitoring network for surfaces water

Federal Office for the Environment FOEN
Regions and cities, Environment

The data show the locations of the stations in the basic monitoring network of the Hydrology Division of the FOEN. It includes all stations currently listed on the FOEN’s home...

Last updated: December 31, 2019
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HQStat flood statistics

Federal Office for the Environment FOEN
Regions and cities, Environment

Data on flood events is managed and statistically evaluated by the FOEN; the findings are made available in the form of result sheets. A systematic statistical evaluation of flood...

Last updated: January 1, 2014
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National Long-Term Surveillance of Swiss Rivers

Federal Office for the Environment FOEN
Regions and cities, Environment

The National River Monitoring and Survey Programme (NADUF) tracks the concentrations of substances occurring in selected Swiss watercourses. NADUF, launched in 1972, is a project...

Last updated: December 7, 2022
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Assessment of the Chemical Water Status: Nitrite

Federal Office for the Environment FOEN
Regions and cities, Environment

Within the National Surface Water Quality Monitoring Programme (NAWA), water quality is recorded jointly by the federal and cantonal authorities at around 100 monitoring stations....

Last updated: March 26, 2014
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Assessment of the Chemical Water Status: Phosphate

Federal Office for the Environment FOEN
Regions and cities, Environment

Within the National Surface Water Quality Monitoring Programme (NAWA), water quality is recorded jointly by the federal and cantonal authorities at around 100 monitoring stations....

Last updated: March 26, 2014
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River basins (catchment areas)

Federal Office for the Environment FOEN
Regions and cities, Environment

The river basins form the uppermost aggregation level for the "Topographical catchment areas of Swiss waterbodies" geodata set. The large areas with a surface area of usually more...

Last updated: December 1, 2019
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Assessment of the Chemical Water Status: Nitrate

Federal Office for the Environment FOEN
Regions and cities, Environment

Within the National Surface Water Quality Monitoring Programme (NAWA), water quality is recorded jointly by the federal and cantonal authorities at around 100 monitoring stations....

Last updated: March 26, 2014
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Swiss water topographical catchment areas: Main river section

Federal Office for the Environment FOEN
Regions and cities, Environment

The data set “Main river section” is part of the geo dataset “Swiss water topographical catchment areas”. The main river in a catchment area is the body of water that leaves the...

Last updated: July 1, 2010
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Gauging stations for hydrological study areas

Federal Office for the Environment FOEN
Regions and cities, Environment

Since 1957 the hydrology division of the FOEN has operated a network of hydrological study areas aimed at observing long-term changes in the water regime within Switzerland’s most...

Last updated: July 27, 2016
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Groundwater bodies of Switzerland

Federal Office for the Environment FOEN
Regions and cities, Environment

The groundwater bodies layer shows a simplified and comprehensive breakdown of hydrogeological overview units for Switzerland. The groundwater bodies here have not been developed...

Last updated: April 25, 2017
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- environment
- groundwater
- groundwater
- hydrogeology
- fsdi-federal-spatial-data-infrastructure
- water
Mean runoff (m³/s) and flow regime types for the river network of Switzerland

Federal Office for the Environment FOEN
Regions and cities, Environment

For the entire Swiss river network natural runoff (m³/s) values (monthly and annual means) have been modeled and the flow regime types determined. «MQ-GWN-CH» constitutes a dataset...

Last updated: December 31, 2000
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Red List

Federal Office for the Environment FOEN
Environment

Red lists are scientific expert reports that assess the degree of threat to native species. In Switzerland, these lists are drawn up by specialists commissioned by the FOEN. They...

Last updated: January 24, 2024
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Traffic noise pollution

Federal Office for the Environment FOEN
Health, Environment

Percentage of the population, flats and buildings exposed to road, rail and air traffic noise during the day and night. The data is based on area-wide model calculations (sonBASE).

Last updated: August 4, 2025
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- noise-pollution-noise-environmental-monitoring-sonbase-database-road-traffic-noise-rail-traffic-nois
- road-traffic-noise
- rail-traffic-noise
- air-traffic-noise

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