By prefectural order dated 4 May 2015, the Bastia Aglomeration Community (CAB) was designated as a supporting structure for the Local Flood Risk Management Strategy (SLGRI) of the Grand Bastia Important Flood Risk Territory (IRR). This strategy was approved by the Corsica Basin Committee on 3 December 2018, then by the Prefect on 28 January 2019). As a follow-up to the approval of the SLGRI, the CAB has committed itself to the establishment of a Comprehensive Flood Prevention Action Programme (Works). The PAPI 3 pre-studies programme aims primarily at improving knowledge of flooding phenomena affecting the CAB territory and conducting further investigations to specify the objectives and actions to be carried out later in the framework of a comprehensive PAPI.