Hazard Zone Plans of the Federal Hydraulic Engineering Administration (BWV) Vorarlberg

Hazard zone plans are expert reports which describe the nature and extent of hazards caused by flood events.
with the probability of occurrence of a 30-yearly (HQ30) and 100-yearly (HQ100) design flood
represent. In addition, the remaining risk if the design event is exceeded (HQ300)
examined and judged. Annuality is the period in years during which the underlying
the underlying design event must be calculated once.

The result of the planning is the delimitation of different hazard zones (HQ30: drainage zones; HQ100:
Red zones, yellow zones; HQ300: runoff zones, residual risk areas) and zones used for flood runoff
or flood protection measures are of particular importance (HQ100: Red-yellow zones, blue zones).

Only completed Hazard Zone Plans are shown!
Work is ongoing on the elaboration of further danger zone plans in the area of competence of the BWV.
If there are no danger zones in an area, this does not mean that there are no possible
There is a risk of flooding! There may be danger zone plans in place right now.
Elaboration or only outflow studies are available for the time being. In addition, hazards caused by
Slope water and backwater from canals are not shown, as they do not correspond to the usually chosen annualities.
(HQ30, HQ100, HQ300) of the underlying outflow studies.
In these cases, it is advisable to contact the affected municipality or the Department of Water Management in
To establish a connection to clarify whether there is information on flood hazards.

In addition to the federal hydraulic engineering administration, the forestry service also prepares for torrent and avalanche construction.
(WLV) in their area of competence Hazard Zone Plans. These are not shown and must be applied to the affected person.
Consult the local authority or directly with the relevant department.

Important fields and data types of the attribute table (those that contain content information):
ANLAGENNAM (string) = name in the water information system Vorarlberg (VOWIS)
FACILITIES SUB (String) = Identification of the hazard or run-off zone
WORKING (String) = Status, \Appendix exists\ = Hazard zone current
WIS_ID (string)= unique identifier in VOWIS

Data source: Hazardous zonesplaene.shp

Data up-to-dateness:
Completed danger zone plans are continuously entered into the data sets.