It brought the number of bodies of missing people to three.
The accident occurred on Friday around 5pm after seven Songkran holidaymakers went on the boat to fish. The overloaded vessel sank after hitting an underwater tree trunk.
Rescue workers found the body of Prasit Yaem-ngam an hour after the accident while the bodies of Saichon Thongnak, 46, and Suwan Masameur, 36, were retrieved around midnight. The bodies were taken to Tha Takieab Hospital for autopsies and police investigation.
The rescue team also went to another spot at the reservoir where a swimmer went missing around the same time. Sattaya Saengsaikaew, 19, went for a swim with a tyre rubber ring. However, he disappeared and his body has yet to be retrieved.