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三峡工程的首要任务是防洪。由于1996年汛期长江上游来水量不大，有人认为三峡工程不能发挥防洪作用，实际上，三峡工程采用对城陵矶地区补偿调度原则进行调度，防洪效果仍然是显著的。分析计算表明，3天预见期通过三峡水库的补偿调节，可使城陵机水位控制在34．40m以内，汉口最高水位可由28．66m降到28．13m；两天预见期可使城陵矶最高水位降低到34．52m，汉口最高水位降到28．24m。
The primary task of the Three Gorges Project is flood control. Due to the small amount of water in the upper reaches of the Yangtze River in the flood season of 1996, some people think that the Three Gorges Project can not play a flood control role. In fact, the Three Gorges Project adopted the principle of compensation and dispatch in Chenglingji area, and the flood control effect is still significant. The analysis shows that the water level in Chengling can be controlled within 34.40m by the compensation adjustment of the Three Gorges Reservoir in the 3-day forecast period, and the highest water level in Hankou can be reduced from 28.66m to 28.13m. The forecast period of two days can make Chenglingji The maximum water level dropped to 34.52m, Hankou the highest water level dropped to 28.24m.