Wellington County OPP, Guelph-Wellington Paramedics and local fire departments responded to the scene and began searching for the missing swimmer.
At approximately 19:30 the bather was located and taken to a local hospital, where they were pronounced dead.
The name of the deceased is being withheld pending notification of next of kin.
Anyone with more information about this incident can contact the Wellington County OPP at 1-888-310-1122. If you wish to remain anonymous, you can call Crime Stoppers at 1-800-222-8477 (TIPS) or submit a tip online here. You may be eligible for a Crime Stoppers reward of up to $2,000.