Hydrological Yearbook 2018

Brennpunkt Hydrologisches Jahrbuch der Schweiz 2018

Hydrological Yearbook of Switzerland 2018

01.07.2019 - The Hydrological Yearbook gives an overview of the hydrological situation in Switzerland. It shows the changes in water levels and discharge rates of lakes, rivers and ground- water and provides information on water temperatures and the physical and chemical properties of the principal rivers in Switzerland.  

Bathing water quality

Aare bei Bremgarten bei Bern

EEA report on bathing water quality

06.06.2019 - Thanks to various protective measures and major advances in wastewater treatment in recent decades, water quality in Swiss rivers and lakes is now very high and virtually all are clean enough to swim in.

“Swiss water bodies – all clear?”

“Swiss water bodies – all clear?”

05.06.2018 – Dive into the FOEN’s new video and experience Switzerland’s water bodies like you’ve never seen them before. Take a seat next to pilot Nino G from planet Nuxxo and accompany him on an adventure through Switzerland’s riverine landscapes.

Schweizer Fliessgewässer

Swiss Government maps covering the waters of Switzerland

There is a wide diversity, ranging from real-time water temperature in rivers, through groundwater protection zones to the potential for small hydropower plants. Subject-related data such as the water storage capacity of the ground or the distribution of rock strata are also included. “Topic Water” at map.geo.admin.ch.

Plant protection products


High concentrations of plant protection

The "NAWA SPEZ 2017" study examined the impact of plant protection products in five small water courses. The study revealed that creeks are affected commonly in regions with intensive agriculture.



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on bodies of water, the possibility of obtaining data, information about extreme value statistics and data on the water withdrawn and returned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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To the Federal Administration News Portal