一、2000年洪水概况 2000年沙澧河洪水来得早,强度大,次数多。主要呈现三个特点:一是暴雨洪水连续发生,从6月26日到7月15日不到一个月的时间内,沙澧河连续发生了四次大洪水,致使泥河洼滞洪区连续7次分洪,滞洪总量近3.5亿立方米。二是洪水严重超标,去年沙澧河四次洪水均超过保证流量和水位,特别是“7.15”洪水来势凶猛,洪峰高,澧河支流甘江河官寨站出现6000立方米每秒的洪峰流 I. Overview of Floods in 2000 In 2000, floods in the Shahe River came earlier, with greater intensity and frequency. There are three main characteristics: First, storm floods occur continuously, from June 26 to July 15 less than a month’s time, four consecutive floods Shahe River, resulting in a continuous 7 Sub-flood, the total detention of nearly 350 million cubic meters. Second, the flood seriously exceeded the standard. Last year, the four floods in the Shahe River exceeded the guaranteed flow and water level. In particular, the “7.15” flood was fierce and the height of flood peak was high. The peak flow of 6000 cubic meters per second