After the reservoir impounding, as the water level of the export of the underground river has been raised, the inland waterlogging disaster becomes more serious in the surrounding region.

• 红水河梯级水电站的百龙滩、岩滩等库区,由于岩溶地下河系统的存在,在水电站蓄水以前,每逢大雨,就会造成库区谷地的浸没内涝。