MARCHAL , Roxane

The Brague River basin (68 km 2 ) is located on the French Mediterranean coast. It experiences a high risk of flash floods. The potential efficacy and efficiency of flood protection strategies based on green (Nature Based Solutions: NBS) or grey (civil-engineering) measures, as well as their co-benefits, are studied in this chapter. Two NBS...

The Brague River basin is a 68 km² catchment located along the French Mediterranean coast between the cities of Cannes and Nice. On 3rd Oct. 2015, the basin was severely hit by an extreme flash flood (time return was over 100 years). The basin very flat lowlands experienced numerous damages and casualties related to this flooding event. The...

Evidence are dearly needed to understand under which conditions it is relevant for decisions makers to invest in NBS for water-related risk. This chapter presents the methodological framework developed for the economic assessment of NBS for water-related risks and its application to seven case studies. We particularly develop methods for the...

Economic narratives are largely put forward as an argument for the promotion of Nature Based Solutions (NBS). However, integrated economic evidence, taking into account direct and opportunity costs, avoided damages and the multiplicity of co-benefits generated by NBS are still needed to support this argument and convince decision makers to...