The hazard class is based on the address topography:
Hazard class 1 (low hazard): building stands on a knoll or slope.
Hazard class 2 (medium hazard): building located in lower/ middle area of a slope, but not near a watercourse.
Hazard class 3 (high hazard): building located in a valley or near a watercourse.
Citation formats
Number of addresses at heavy rainfall risk Germany 2025, by hazard class
As of 2025, around *** million addresses in Germany were classified as hazard class *, meaning there was a low risk of damage from heavy rainfall. *** million out of 22.6 million addresses in Germany were at high risk of damage.
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GDV. (August 6, 2025). Distribution of addresses at heavy rainfall risk in Germany in 2025, by hazard class (in millions) [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 27, 2026, from /statistics/1274672/heavy-rainfall-risk-number-of-addresses-by-hazard-class-germany/
GDV. "Distribution of addresses at heavy rainfall risk in Germany in 2025, by hazard class (in millions)." Chart. August 6, 2025. ÌÇÐÄÆƽâ°æ. Accessed July 27, 2026. /statistics/1274672/heavy-rainfall-risk-number-of-addresses-by-hazard-class-germany/
GDV. (2025). Distribution of addresses at heavy rainfall risk in Germany in 2025, by hazard class (in millions). ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 27, 2026. /statistics/1274672/heavy-rainfall-risk-number-of-addresses-by-hazard-class-germany/
GDV. "Distribution of Addresses at Heavy Rainfall Risk in Germany in 2025, by Hazard Class (in Millions)." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 6 Aug 2025, /statistics/1274672/heavy-rainfall-risk-number-of-addresses-by-hazard-class-germany/
GDV, Distribution of addresses at heavy rainfall risk in Germany in 2025, by hazard class (in millions) ÌÇÐÄÆƽâ°æ, /statistics/1274672/heavy-rainfall-risk-number-of-addresses-by-hazard-class-germany/ (last visited July 27, 2026)
Distribution of addresses at heavy rainfall risk in Germany in 2025, by hazard class (in millions) [Graph], GDV, August 6, 2025. [Online]. Available: /statistics/1274672/heavy-rainfall-risk-number-of-addresses-by-hazard-class-germany/
