The plans will be carried out in different stages , which involves 11 key projects , including : taipu river , wangyu river , dyke around the taihu lake , south - drainage in hangjiahu plain , water drainage and diversion in huxi , hongqitong , flood control in east - west tiaoxi , water drainage and diversion in wuchengxi , enlarging lanlugang , dredging liuhe and xietang , north drainage in hangjiahu , and flood prevention in the upper stream of huangpu river 该方案以流域防洪除涝为主，统筹兼顾供水，航运和环境保护等方面的利益，计划分期实施包括太浦河、望虞河、环太湖大堤、杭嘉湖南排、湖西引排、红旗塘、东西苕溪防洪、武澄锡引排、扩大拦路港疏浚泖河及斜塘、杭嘉湖北排通道及黄浦江上游防洪工程等十一项骨干工程。
