According to officials, around 12:30 p.m., Department of Energy and Environmental Protection (DEEP) Environmental Conservation (EnCon) Police officers responded to the lake after receiving a report of a capsized 17-foot motorboat.
Crews recovered two men from the vessel.
Authorities said one was safe and unharmed, but that a second man was transported to Danbury Hospital where he was pronounced deceased.
The victim’s identity has not been released at this time.
It is not known what caused the boat to capsize.
The incident remains under investigation.