Flood damage and influencing factors: New insights from the August 2002 flood in Germany

Annegret H. Thieken, Meike Müller, Heidi Kreibich, Bruno Merz

Water Resources Research · 2005 · 439 citations · 23 references

DOIFull text

Open access

Concepts

TL;DR

The study examines how flood impact, precaution, preparedness, and building/household characteristics differ between low and high damage quartiles among affected households. The authors conducted 1,697 computer‑aided telephone interviews with affected households and used principal component analysis to assess flood damage and influencing factors. Water level, flood duration, and contamination were the strongest predictors of building and content damage, followed by building size and value, while temporal and permanent resistance had limited impact but precautionary measures could markedly reduce damage.

Abstract

In the aftermath of a severe flood event in August 2002 in Germany, 1697 computer‐aided telephone interviews were undertaken in flood‐affected private households. Besides the damage to buildings and contents a variety of factors that might influence flood damage were queried. It is analyzed here how variables describing flood impact, precaution, and preparedness as well as characteristics of the affected buildings and households vary between the lower and upper damage quartiles of all affected households. The analysis is supplemented by principal component analyses. The investigation reveals that flood impact variables, particularly water level, flood duration, and contamination are the most influential factors for building and for content damage. This group of variables is followed by items quantifying the size and the value of the affected building/flat. In comparison to these factors, temporal and permanent resistance influences damage only to a small fraction, although in individual cases, precaution can significantly reduce flood damage.

References

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