Abstract
Abstract. Every year in France, recurring flood events result in several million euros of damage, and reducing the heavy consequences of floods has become a high priority. However, actions to reduce the impact of floods are often hindered by the lack of damage data on past flood events. The present paper introduces a new database for collection and assessment of flood-related damage. The DamaGIS database offers an innovative bottom-up approach to gather and identify damage data from multiple sources, including new media. The study area has been defined as the south of France considering the high frequency of floods over the past years. This paper presents the structure and contents of the database. It also presents operating instructions in order to keep collecting damage data within the database. This paper also describes an easily reproducible method to assess the severity of flood damage regardless of the location or date of occurrence. A first analysis of the damage contents is also provided in order to assess data quality and the relevance of the database. According to this analysis, despite its lack of comprehensiveness, the DamaGIS database presents many advantages. Indeed, DamaGIS provides a high accuracy of data as well as simplicity of use. It also has the additional benefit of being accessible in multiple formats and is open access. The DamaGIS database is available at https://doi.org/10.5281/zenodo.1241089.
Highlights
Between 1995 and 2015, floods have affected more than 2.3 billion people and caused about USD 662 billion in damage around the world
This paper presents a new database, called the DamaGIS database, which compiles and structures flood-related damage in the south of France
Since 2011, direct and tangible damage caused by flash floods in the south of France have been systematically collected in the DamaGIS database
Summary
Between 1995 and 2015, floods have affected more than 2.3 billion people and caused about USD 662 billion in damage around the world. To date in France, the insurance trade associations have estimated the total cost of flood-related damage at EUR 1–. Floods in the Alpes-Maritimes area in October 2015 resulted in 20 fatalities and a total amount of estimated damage greater than EUR 600 million (Saint-Martin et al, 2016; CCR, 2017). More than 2000 municipalities were affected by this event for a total cost of damage to insured goods higher than EUR 1.4 billion (Van Oldenborgh et al, 2016; Ramos et al, 2017; CCR, 2016). C. Saint-Martin et al.: DamaGIS cluding floods, and thereby reduce their consequences (Molinari et al, 2017)
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