The victim, identified as Hameed Rizwan, is a resident of Lindula and a father of two.
He had drowned while trying to rescue the girl who had jumped from the Talawakelle Railway Bridge into the reservoir to commit suicide.
The girl was rescued by the OIC of Talawakelle police Inspector Ruwan Fernando with the help of another police officer.
She was subsequently admitted to the Lindula Hospital for further treatment.