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入江水道西起三河闸,向东南经高邮湖、邵伯湖出六闸分流入江,是淮河排泄洪水的重要通道,每年平均约有220亿立方米的洪水由此入江,其中1954年高达700多亿立方米,高、邵两湖相应出现9.38米和8.76米的历史最高水位,是我区一条重要的防洪战线。另外,随着工农业生产的发展和水资源调查评价工作的深入,洪水不再单纯地看作是一种灾害,已开把它作为一种自然资源来加以利用,因而对洪水不仅在数量上,而且在的、空上的变化均应关切,对水文测验与分析也提出了更高的要求。如1930年,三河闸行洪289亿立方米,归江三闸(万福闸、太平闸、金湾闸)推得入江总量为344亿立方米,如扣除大汕子闸及河网调蓄水量,其余43亿立方米全部看作区间水量,则年径流系数约为0.76,其中汛期径流系数为1.34。
Into the southeastern Yangtze River via the Gaoyou Lake and Shaobo Lake out of the six gates into the river, is an important channel for the drainage of the Huaihe River, an average of about 22 billion cubic meters of floods into the river, of which 1954 up to 700 billion cubic meters The highest historical water level of 9.38 meters and 8.76 meters appears in meters, highs and shales, which is an important flood prevention front in our district. In addition, with the development of industrial and agricultural production and in-depth investigation and appraisal of water resources, floods are no longer simply regarded as a disaster and have been exploited as a natural resource. Therefore, floods are not only quantitatively, Also, the changes in space and air should be concerned with the higher requirements for hydrological testing and analysis. For example, in 1930, the floodgates of Sanhe Gate Bank reached 28.9 billion cubic meters and the total return to the Three Gorges Dam (Wanfu Gate, Taiping Gate and Jinwan Gate) was 34.4 billion cubic meters. For example, And the remaining 4.3 billion cubic meters are all considered as interval water, the annual runoff coefficient is about 0.76, of which the runoff coefficient of flood season is 1.34.