一、治理的必要性信河在八字咀以下的河道十分零乱,特别是西大河有分洪道、三塘河、江埠河、枫港河、寨上河、木西河等六条支流,这些河流合而又分,分而又合,干支流弯弯曲曲,纵横交叉,造成圩堤错综复杂。由于堤线太长,劳力负担过重,因而堤顶低矮,堤身单薄,防洪能力低。1954年湖口水位21.68米,我县除三座圩堤未倒外,其他圩堤全部溃决,受灾面积50余万亩。1973年我县倒塌圩堤18座,洪涝面积28万余亩,要解决这个河多圩多,易洪易涝的问题,唯一的办法是进行信河下游整治,方法是堵支并流,联圩并垣,达到缩短堤线,减轻 I. The Necessity of Governance Letters The river below Bazizui is very messy, especially the Xidihe has six tributaries such as Dahongdao, Santanghe, Jiangbuhe, Fengganghe, Zhaishanghe, Muxihe and so on Divided, sub-and combined, dry tributaries juxtaposed, vertical and horizontal cross, resulting in the dike complex. As the embankment line is too long, the labor burden is too heavy, thus the embankment is low, the levee body is thin and the flood control ability is low. In 1954, the water level at the mouth of the lake was 21.68 meters. All three levees of the county did not collapse except the levees of the other levees, and the affected area was more than 50 million mu. In 1973, the county collapsed 18 levees and the flooding area was more than 280,000 mu. The only solution to solve this problem is to pollute the lower reaches of the Shun River. Fair and Yuan wall, to shorten the embankment, reduce