Quimperlé has implemented a new flood prevention system following past events, particularly those of December 2023. This monitoring system, installed at the Kerbertrand dam, includes a radar and a rain gauge to closely monitor the Dourdu, a watercourse that is not monitored by the state services. Designed by the company Ijinus (based in Mellac), this investment, co-financed by several stakeholders including the City and Quimperlé Community, aims to collect data for prevention and ensure rapid alerting of residents through 24-hour access to information. An additional water level sensor has also been installed on the Ellé.