Meanwhile, the red alert in the Idukki Dam still continues even though the water lever has receded.
With water flowing to the Periyar River from Mullaperiyar Dam, houses located in areas such as Manchumala, Aattoram, Kadassikadavu and Karuppupalam were flooded
He asked everyone to remain cautious as the water inflow to the dams and reservoirs is still strong due to rains in the eastern part of Kerala.
A low-pressure formation over the North Western Bay of Bengal, off the coast of Odisha and Bengal, is likely to intensify in the next 24 hours, warns IMD.
What perhaps concerns the Kerala govt is the slow, but steady rise in water levels of various dams in the central and north Kerala districts. It had forced authorities to raise the shutters of several dams on Friday.
Three shutters of the Mullaperiyar Dam were opened by 30 cm earlier in the day to release 534 cubic feet of water. This was later doubled to well over 1,000 cubic feet to release excess water.
The IMD has issued an Orange alert indicating isolated heavy rainfall for Idukki, Thrissur, Palakkad, Malappuram, Kozhikode, Wayanad, Kannur and Kasaragod districts of Kerala.
The average hourly inflow at Mullaperiyar till 7 pm on Thursday was 6592 cusecs.
The water level in 10 of KSEB's bigger dams, including the largest Idukki dam, has not crossed even the 'blue level', the first stage when a warning is issued.
Tamil Nadu is now attempting to raise the water level in the dam to the permitted capacity of 142 ft as it has reached 135.9 ft already.