Dataset Direct Download Service (WFS): Flooding areas outside the PPRI Regulatory Areas in the Department of Vienna

The flood zone atlas (AZI) of the department of Vienna represents the envelope areas of all known floods, either by modelling or by field observation.

This atlas was carried out using two methods (specified in the attributes):
— hydrogeomorphological, based on a representation of the major stream bed, deterministic method only reflecting the extent of the flooding zone for secondary streams,
— hydraulic, based on the centennial reference flood or the highest known waters (PHEC) when they are higher, probabilistic approach to other streams.

This data is intended to inform citizens and decision-makers about the risk of flooding. It has no regulatory scope and cannot be a substitute for a planning document or a Risk Prevention Plan (RPP). Nevertheless, it allows citizens and officials, elected or administrative, to better appreciate the extent of areas that pose a significant flood risk or promote water sprawl. It is a tool for information and decision-making. It cannot be ignored in particular when drawing up urban planning documents and explaining them.