北京城市河湖水系由水源引水渠道、内城河湖和排水河道3部分构成。有引水渠道2条,总长32.6km;主要河道40条,总长355.8km;主要湖泊22个,面积600km~2。1998年以来,市委、市政府下决心治理城市水系,按照“统一规划、综合治理;突出重点、分期实施”的指导思想,对六海、筒子河、京密引水渠昆玉段、玉渊潭、八一湖、长 Beijing urban river and lake water diversion channels by the water, inner city rivers and lakes and drainage channel 3 parts. There are two diversion channels, a total length of 32.6km; 40 major rivers, a total length of 355.8km; 22 main lakes, an area of ​​600km ~ 2. Since 1998, municipal government determined to control urban water system, in accordance with the “unified planning, ; Focus on the key points, the implementation of the ”guiding principle of the six seas, the river cheese, Jingmi diversion channel Kunyu paragraph Yuyuantan, Bayi Lake, long