The flood hazard areas show which areas are affected in flood events with varying probability of occurrence. This makes it possible to compare which areas are under water at a frequent (HQ frequent), 100-yearly (HQ100) and extreme floods (HQextrem). The flood zones are provisionally secured on the basis of flood hazard areas for a HQ100 by official notice and subsequently determined in a formal procedure by ordinance (Section 76 Water Resources Act). In flooding areas, usage restrictions apply. Maximum image size: 4096 x 4096 pixels.
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