Precinct 1 deputies say they received a call about a distressed boater in the Caney Creek area of the lake around 7:40 a.m. on Sunday.
Authorities say they recovered the boater's body at approximately 1:30 p.m. on Sunday. He has been identified as 54-year-old Paul Dean of Spring, Texas.
An autopsy has been ordered for the victim.
Deputies say this has been the third drowning on Lake Conroe this year.
The Precinct 1 Constables Office and San Jacinto River Authority encourage all Lake Conroe visitors to always wear a personal flotation device.