The shutters of Idukki dam were first opened on October 19 after water level in the dam crossed 2,398 ft. The shutters were closed later on October 27 when the water level came down to 2,397 ft. However, due to heavy rainfall in the catchment areas and the water level surging above the red alert level of 2,399 ft, one shutter of the dam was opened again on Sunday (November 14). After keeping it opened for two days, the shutters were closed on Tuesday at night.