１治理目标北京城市水系是北京城市基础设施的重要组成部分,具有滞蓄排泄雨洪、供水和城市景观的综合功能。城区分布有大小河流３０多条,总长约５００ｋｍ;大小湖泊２６处,湖泊面积６００多ｈｍ２。随着建设的快速发展,现有城市水系的基础设施越来越难以适应国际化大都市发展的 Goals of Governance Beijing Urban Water System is an important part of Beijing’s urban infrastructure and has the integrated function of stagnant storage and discharge of rainwater, water supply and urban landscape. There are more than 30 large and small rivers distributed in the urban area with a total length of about 500km; 26 lakes and large lakes and an area of ​​more than 600 hm2 of lakes. With the rapid development of construction, the infrastructure of existing urban water systems is becoming more and more difficult to adapt to the development of cosmopolitan cities