Emergency services were called out after an unoccupied boat was spotted on Derwentwater.
Maryport Rescue, Whitehaven Coastguard Rescue Team, Keswick Mountain Rescue Team, Cumbria Fire and Rescue Service, BEEP Doctors, the ambulance service and Cumbria police were alerted at around 11am today, Monday July 1.
The boat had been seen on the east side of the lake at Keswick.
The person the emergency services was located and taken to the Cumberland Infirmary in Carlisle by Coastguard helicopter.
However, Maryport Rescue said: “Unfortunately it wasn’t the outcome we all wanted. Our thoughts are with family at this difficult time.”