波罗树水文站是金口坝断面以下唯一的国家重点水文站,1951年6月设立,流域面积2349km2,为南四湖防汛抗洪调度的重点站,具有长系列水位资料,资料包括了多个丰枯平周期,具有较好的代表性;断面采用2005年新勘测成果,且金口坝以下断面形状变化不大,因此,波罗树水文站设计频率具有较好的代表性。根据资料文章主要分析了泗河洪水上滩的重现期为3.3年。 The Baluhu Hydrological Station is the only national key hydrological station under the section of Jinkou Dam. It was established in June 1951 and has an area of ​​2349km2. It is a key station for flood control and flood fighting in Nansi Lake. It has a long series of water level data, including multiple Fupingping cycle, with good representation; sections using the new survey results in 2005, and the following sections of Jinkou dam little change, so the Baltic hydrological station design frequency has a good representation. According to the information article, it mainly analyzes the recurrence period of flood on the bank of Sihe River is 3.3 years.