Overland flow map
The areas affected by overland flow were determined using a simplified method the over entire Switzerland and Liechtenstein. They were determined by modelling without any verification in the field. The map shows areas that are potentially affected by rare to very rare events. It provides a rough overview of the hazard of overland flow. It does neither take into account flooding due to overflowing watercourses, nor due to protective structures or culverts under roads or embankments (e.g. railway embankment appear according to the DTM as dykes without vaults). This map allows - in the absence of a more detailed hazard map - a rough assessment of the hazardous overland flow. The return period of the event represented is estimated to be larger than 100 years - an event that, over a long period of observation, would appear on average once every 100 years. It cannot be ruled out that areas not affected by the hazard map may be affected. It has to be used on a scale coarser than 1: 12,500 (Liechtenstein: 1:10,000) because of the potential for misinterpretation of affected and unaffected areas respectively. The map is not legally binding. The cantons are free to use it as an indicative hazard map and publish it on their cantonal geoportals.
Simple
Identification info
- Alternate title
-
Overland flow map
- Date (Creation)
- 2018-05-22
- Date (Revision)
- 2023-02-09
- Citation identifier
- ch.bafu.gefaehrdungskarte-oberflaechenabfluss
Citation identifier
Point of contact
Responsible party
- Organisation name
-
Hazard Prevention Division, Federal Office for the Environment
- Voice
-
+41 58 464 10 75
Address
- City
-
Bern
- Postal code
-
3003
- Electronic mail address
-
gefahrenpraevention@bafu.adm gefahrenpraevention@bafu.admin.ch
- Protocol
-
WWW:LINK
- Role
- Point of contact
- Last Name
-
BAFU Gefahrenpraevention
- Organisation Acronym
-
FOEN
Point of contact
Responsible party
- Organisation name
-
Kanton Luzern
- Position name
-
Verkehr und Infrastruktur (vif)
- Voice
-
0041 41 318 12 12
Address
- City
-
Luzern
- Postal code
-
6002
- Country
-
CH
- Streetname
-
Arsenalstrasse
- Streetnumber
-
43
- Website
- https://vif.lu.ch/
- Contact instructions
-
betrifft nur die Daten des Kantons Luzern
- Role
- Owner
- Organisation Acronym
-
Kanton Luzern
Point of contact
Responsible party
- Organisation name
-
Gebäudeversicherung Luzern
- Position name
-
Luzern
- Voice
-
+41 41 227 22 22
Address
- City
-
Luzern
- Postal code
-
6002
- Country
-
CH
- Streetname
-
Hirschengraben
- Streetnumber
-
19
- Website
- https://gvl.ch/ ( WWW:LINK )
- Contact instructions
-
betrifft nur die Daten des Kantons Luzern
- Role
- Owner
- Organisation Acronym
- Gebäudeversicherung Luzern
Point of contact
Responsible party
- Organisation name
-
Fürstentum Liechtenstein
- Position name
-
Amt für Bevölkerungsschutz (ABS)
- Voice
-
+423 236 69 16
Address
- City
-
Vaduz
- Postal code
-
9490
- Country
-
CH
- Electronic mail address
- Streetname
-
Zollstrasse
- Streetnumber
-
45
- Website
- https://abs.llv.li ( WWW:LINK )
- Role
- Point of contact
- Last Name
-
Amt für Bevölkerungsschutz
- Organisation Acronym
-
ABS
- Maintenance and update frequency
- Irregular
-
GEMET
-
-
flooding
-
flood
-
thunderstorm
-
surface runoff
-
rain
-
danger analysis
-
natural risk analysis
-
natural risk
-
-
geocat.ch
-
-
FSDI Federal Spatial Data Infrastructure
-
-
geocat.ch
-
-
opendata.swiss
-
- Use constraints
- Other restrictions
- Other constraints
- Opendata OPEN: Open use.
- Language
- Deutsch
- Character set
- 8859 Part 1
- Topic category
-
- F Geology, Soils, Natural Hazards
- F3 Natural Hazards
Extent
- Description
-
Switzerland
))

Extent
- Description
-
Switzerland (extent of the railway network with areas close to the border)
))

- Geographic identifier
- CH
- Distribution format
-
-
ESRI File Geodatabase FileGDB (GDB)
()
-
ESRI File Geodatabase FileGDB (GDB)
()
Distributor contact
Responsible party
- Organisation name
-
Hazard Prevention Division, Federal Office for the Environment
- Voice
-
+41 58 464 10 75
Address
- City
-
Bern
- Postal code
-
3003
- Electronic mail address
-
gefahrenpraevention@bafu.adm gefahrenpraevention@bafu.admin.ch
- Website
- https://www.bafu.admin.ch/bafu/de/home/amt/abteilungen-sektionen/abteilung-gefahrenpraevention.html ( WWW:LINK )
- Role
- Distributor
- Last Name
-
BAFU Gefahrenpraevention
- Organisation Acronym
-
FOEN
- OnLine resource
-
Preview map.geo.admin.ch
(
MAP:Preview
)
Preview map.geo.admin.ch
- OnLine resource
-
ch.bafu.gefaehrdungskarte-oberflaechenabfluss
(
OGC:WMS
)
WMS-FSDI service, layer "Overland flow map"
- OnLine resource
-
ch.bafu.gefaehrdungskarte-oberflaechenabfluss
(
OGC:WMTS
)
WMTS-FSDI service, layer "Overland flow map"
- OnLine resource
-
Homepage Surface runoff risk map
(
WWW:LINK
)
Link to description
- OnLine resource
-
Link to portal
(
CHTOPO:specialised-geoportal
)
Link to portal
- Geometric object type
- Surface
- Reference system identifier
- CH1903+ (LV95)
Metadata
- Metadata language
- Deutsch
- Character set
- UTF8
- Hierarchy level
- Dataset
- Date stamp
- 2024-06-17T06:55:49.135Z
- Metadata standard name
-
GM03 2+
- Metadata standard version
-
1.0
Metadata author
Responsible party
- Organisation name
-
Hazard Prevention Division, Federal Office for the Environment
- Voice
-
+41 58 464 10 75
Address
- City
-
Bern
- Postal code
-
3003
- Electronic mail address
-
gefahrenpraevention@bafu.adm gefahrenpraevention@bafu.admin.ch
- Protocol
-
WWW:LINK
- Role
- Point of contact
- Last Name
-
BAFU Gefahrenpraevention
- Organisation Acronym
-
FOEN