The CIAL is situated close to the river.
"As a measure of precaution, we are stopping arrival operations from 1.10 pm today," a CIAL spokesperson said.
One shutter of the Idukki dam was also partially opened as a trial run.
The opening of the dam shutters had resulted in an increase in the water level in the Periyar river.
Heavy rains have been lashing several parts of Kerala for the past few days, leading to a copious inflow into the state's reservoirs.
(This story has not been edited by Business Standard staff and is auto-generated from a syndicated feed.)