Water level in Idukki Dam rose to its full storage level of 2403 foot.
The Cochin International Airport Limited (CIAL) made a decision to resume the arrival operations almost two hours after a possible inundation in the airport area was detected, the spokesperson said. With water levels rising in various dams and reaching nearly maximum capacity, shutters of at least 22 reservoirs in the state have been opened to drain out excess water.
Drinking water distribution in Kochi, 130km away from Idukki dam, was affected after sludge crept into the water pumping unit in Aluva, officials said.
Following the heavy rains, the Southern Naval Command (SNC) is on a high alert in Kerala to deal with any emergency situation.
The Kerala State Electricity Board opened all four shutters of the Idamalayar dam in Eranakulam district on Thursday morning as the water filled the reservoir. People living along Periyar River have been asked to stay cautious.
Torrential downpour in the vulnerable northern and central districts of Kerala has hardly relented, with the catchment areas of the fast-filling Idukki reservoir recording 12.9 cm of rain by this morning. An orange alert was sounded earlier at the dam after water level in the reservoir reached 167 metres.
Ernakulam district administration officials said relief camps have been opened in Choornikkara and Kombanad villages as it is anticipated that the release of water may cause inundation in these areas. Public going near dams to view opening of shutters, is not advisable. In the advisory issued on Friday, the USA said the heavy southwest monsoon rains triggered landslides and floods in the state, and American citizens should avoid visiting all affected areas in the state.
Chief Minister Pinarayi Vijayan had described the flood situation in the state as "very grim" and it was for the first time in the history of the state that 24 dams had been opened at a time following the water level reaching maximum capacity. The operations, however, resumed later.
Chief Minister Pinarayi Vijayan said, "Help has been sought from Army, Navy, NDRF".