The mountains located near the French Mediterranean coast are regularly subject to severe rainfalls, and consequently to torrential floods. On 3rd, Oct. 2015, a dramatic flood occurred in the region between Cannes and Nice (twenty peoples died, 550-650M€ of losses). Three rivers experience particularly dramatic floods in 2015: the Riou de l’Argentière (47 km², mountainous basin); the Frayères (22 km², rural headwaters, urban lowlands); the Brague (68 km², rural and forested basin, urban lowlands). The latter has been chosen as DEMO site for its bigger size, greater diversity and more numerous data.

1. The idea is to explore whether karst water resources management is a potential NBS to reduce both flood and agricultural drought risks: while pumping in karst aquifers during dry periods, water is available for several usages (irrigation, drinking water supply, river minimum discharge); once the aquifer is depleted, it can store more water during floods
2. Co-benefitswill result from surface water related ecosystems in better state (no hydrological drought)
3. Natural Assurance Scheme: institution in charge of supplying drinking water