(1) Yongding River: the Sanjiadian River starts from the sluice, and the left bank reaches Lianggezhuang (including the New North Embankment), and the right bank reaches Jinmen;

(2) Chaobai River: from the confluence of Chaobai River, from the left bank to the city boundary, and from the right bank to Niumutun River;

(3) Huaihe River: Huairou Reservoir Dam to Chaobai River;

(4) Wenyu River: Shahe Gate to Beiguan River Gate;

(5) North Canal: Starting from the Beiguan River sluice, the left bank runs to the mouth of Niumutun River, and the right bank runs to the city boundary;

(6) Tidal movement and river channel reduction: from Beiguan flood diversion sluice to Shiguzhuang sluice;

(7) Liangshui River: Majiqiao Gate to North Canal;

(8) Jingmi diversion canal: from GongZhuangzi entrance sluice to Yixiu sluice;

(9) Chaohe main canal: Tiaozhuang to Tangzhishan Reservoir;

(10) Ganggou River: Xugezhuang sluice passes through Juntun sewage sluice to the city boundary. Second, the width of the scope of river protection, according to the needs of the protection of water conservancy projects and the actual situation of each river section, extends horizontally from 30 meters to 200 meters along the central line of the river embankment on both sides of the strait (the upper mouth line of the river without embankment or the obstacle clearing line). Due to special circumstances, the extension width can be increased or decreased as needed. See the attached table for the width of the protection scope of major rivers in the suburbs of this city.

The old dike section of Yongding River Beijing Cement Products Factory is still used as the second flood control line; Dongheyan and Liuzhuangzi flood diversion channel to Xiaoyaba River are flood control protection areas. Third, within the scope of river protection, strictly implement the "Regulations on the Protection and Management of Water Conservancy Projects in Beijing", and must not engage in activities that endanger water conservancy projects, such as digging sand and taking soil, building fish ponds, building piles, and blasting; Violation, in addition to criticism to stop, shall be ordered to restore the original state. Due to special circumstances, if it is really necessary to carry out construction (including reconstruction, expansion and renovation) within the scope of river protection, the design shall be put forward in accordance with the requirements of protecting the safety of water conservancy projects, reported to the municipal and county (district) water administrative departments for examination and approval according to the river management authority, and submitted for approval in accordance with the relevant provisions of urban and rural planning and management. Four, the county (District) water administrative department may delimit the scope of protection of small and medium-sized rivers under the jurisdiction of the county (District), and report to the county (District) people's government for approval, and report to the municipal water administrative department and the municipal planning administrative department for the record. Five, the implementation of these Provisions shall be supervised by the municipal water administrative department, and shall be responsible for the interpretation of specific problems in the implementation. Six, the provisions approved by the Municipal People's government, since June 1986+0.