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永定河防洪历来是一个备受关注而又亘古不变的话题。多少年来,人们一次又一次地跟洪水作着不屈不挠的斗争,修建了防洪工程,并逐步完善了非工程设施。截至目前,永定河北京段的防洪标准达到了100 a一遇,建立了由水库、堤防、蓄滞洪区、分洪道、水闸、河道整治、护岸及控导等一系列工程构成的流域防洪工程体系,建立了洪水预报、蓄滞洪区管理、河道清障等非工程措施。随着防洪工程体系的逐步建成并完善,而永定河自1956年以后一直没有产生洪水,三家店以下河道
Yongding River flood control has always been a topic of great concern and everlasting. Over the years, people have been fighting indomitable battles with the flood again and again, built flood control projects and gradually improved non-engineering facilities. Up to now, the flood control standard of Beijing section of Yongding River reaches 100 years, and a flood control engineering system has been set up which consists of a series of projects such as reservoirs, embankments, flood storage and detention areas, flood diversions, sluices, river regulation, bank protection and control , Established flood forecasting, flood storage and detention area management, river clearance and other non-engineering measures. With the gradual completion and improvement of the flood control system, the Yongding River has not generated any flood since 1956,