Flood alert map
The flood alert map shows the current flood danger level (1 to 5) for all and for the regions in relation to small and medium-sized rivers.
The rivers of national interest are divided into individual stretches of river, each of which has a defined discharge gauging station. The forecast is based on a hydrological model and various weather models. Depending on how the forecasters assess and interpret the models, individual stretches of river and lakes are colour-coded by danger level. If necessary, the FOEN forecasters may request more detailed information on weather developments and the status of snow cover from MeteoSwiss and/or the WSL Institute for Snow and Avalanche Research (SLF).
The FOEN also issues alerts and information when a strong increase in discharge is expected locally on small and medium-sized rivers. In such cases – especially during thunderstorms with heavy rainfall – it is not possible to predict precisely which water bodies will be affected. Therefore, the regions likely to be affected are marked on the flood alert map. There are only three danger levels for small and medium-sized rivers due to the greater uncertainties involved: no or minor danger (green), moderate flood danger (yellow) and high flood danger (red).
Simple
Identification info
- Alternate title
-
Flood alert map
- Date (Creation)
- 2014-11-05
- Citation identifier
- ch.bafu.hydroweb-warnkarte_national
Citation identifier
Point of contact
Responsible party
- Organisation name
-
Federal Office for the Environment / Hydrology Division
- Voice
-
+41 58 464 71 87
- Facsimile
-
+41 58 464 76 81
Address
- City
-
Bern
- Postal code
-
3003
- Country
-
CH
- Electronic mail address
-
hydrologie@bafu.adm hydrologie@bafu.admin.ch
- Protocol
-
WWW:LINK
- Role
- Point of contact
- Last Name
-
BAFU Hydrologie
- Organisation Acronym
-
FOEN
-
GEMET
-
-
flood
-
flowing water
-
hydrology
-
lake
-
natural hazard
-
water (geographic)
-
-
geocat.ch
-
-
opendata.swiss
-
-
geocat.ch
-
-
FSDI Federal Spatial Data Infrastructure
-
- Use constraints
- Other restrictions
- Other constraints
- Opendata OPEN: Open use.
- Language
- Deutsch
- Character set
- UTF8
- Topic category
-
- I Inland Waters
Extent
- Description
-
Switzerland
))

- Basic geodata identifier type
- Federal
- Distribution format
-
-
GeoJSON (GEOJSON)
()
-
GeoJSON (GEOJSON)
()
- OnLine resource
-
Preview map.geo.admin.ch
(
MAP:Preview
)
Preview map.geo.admin.ch
- OnLine resource
-
ch.bafu.hydroweb-warnkarte_national
(
OGC:WMS
)
WMS-FSDI service, layer "Flood alert map"
- OnLine resource
-
Link to description
(
WWW:LINK
)
Link to description
- OnLine resource
-
Download server from geo.admin.ch
(
WWW:DOWNLOAD-URL
)
Download server from geo.admin.ch
- OnLine resource
-
Download verschiedener Produkte mit hydrologischem Bezug.
(
WWW:DOWNLOAD-URL
)
Download verschiedener Produkte mit hydrologischem Bezug.
- OnLine resource
-
Thematic geoportal
(
CHTOPO:specialised-geoportal
)
Thematic geoportal
- Geometric object type
- Curve
- Geometric object type
- Surface
- Reference system identifier
- EPSG:21781
Metadata
- Metadata language
- Deutsch
- Character set
- UTF8
- Hierarchy level
- Dataset
- Date stamp
- 2025-01-22T10:59:44.725Z
- Metadata standard name
-
GM03_2
Metadata author
Responsible party
- Organisation name
-
Federal Office for the Environment / Hydrology Division
- Voice
-
+41 58 464 71 87
- Facsimile
-
+41 58 464 76 81
Address
- City
-
Bern
- Postal code
-
3003
- Country
-
CH
- Electronic mail address
-
hydrologie@bafu.adm hydrologie@bafu.admin.ch
- Protocol
-
WWW:LINK
- Role
- Point of contact
- Last Name
-
BAFU Hydrologie
- Organisation Acronym
-
FOEN