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１９９６年１１月至１２月期间，云峰水力发电厂观测班发现云峰大坝挠度及水平位移观测值出现异常，其值超过了１９８６年１１月发生的历史最大值。文中对云峰大坝冬季坝体水平位移增大的原因进行了分析，结果表明：大坝位移增大是由于低温高水位及气温与水温相差较大等因素综合影响造成的。
From November to December 1996, the observation team of Yunfeng Hydropower Plant found that the observed values of the deflection and horizontal displacement of Yunfeng Dam were abnormal, exceeding the maximum value of history that occurred in November 1986. The reason why the horizontal displacement of Yunfeng Dam increases in winter is analyzed. The results show that the increase of dam displacement is caused by the combined effect of low temperature and high water level and large difference between air temperature and water temperature.