The incident happened around 11 pm on Tuesday with preliminary investigations pointing towards suicide.
The flower show would be spread over 30 acres of the Malampuzha garden set in front of the Malampuzha Dam.
It was on Thursday evening that the man, who was on a visit to the Malampuzha gardens, jumped into the dam.
Relatives had filed a missing persons complaint at Malampuzha police station.
The average hourly inflow at Mullaperiyar till 7 pm on Thursday was 6592 cusecs.
The decision to raise the shutters was made in view of the heavy rain the region has experienced these past few days.
The exquisite sculpture stands tall notwithstanding the entire clamour around it by covering its ears and with a meditative face.
The officers are accused of failing to initiate a timely mission to rescue trekker stranded in the Kurumbachi Hills in Palakkad.
Though Babu had violated the law, we decided not to harass him for the time being, the minister said.
It was the locals who spotted mobile flash lights on the mountain around 9 pm on Sunday and informed the police and the Forest officers about the trespasser.