Hazard overflow of watercourses — TRI de Abbeville

The implementation of the Flood Directive aims to establish a framework for flood risk assessment and management at the level of the Artois — Picardy basin while prioritising state intervention for areas with significant flood risk (TRI). Flooding of rivers of the Somme and its tributaries for a return period 10 years (high proba.), 100 years (medium proba.) or 1000 years (low proba.): the event has a 10, 100 or 1000 probability of occurring each year on the Abbeville TRI.本《洪水指令》的实施旨在为阿图瓦-皮卡第（Artois — Picardy）流域层面的洪水风险评估与管理搭建统一框架，并针对存在重大洪水风险的区域（TRI）优先开展政府干预。索姆河及其支流的洪水场景对应10年（高概率）、100年（中概率）或1000年（低概率）重现期：在阿贝维尔TRI区域内，该类事件的年发生概率分别为10%、1%或0.1%。