At 6:51am yesterday, Sunday 19 March three fire engines from Keswick and Penrith attended a report of a person in water at Thirlmere, Keswick.
Four people were stranded on an island in Thirlmere Reservoir and unable to get back to the lakeside.
A spokesman for Cumbria Fire and Rescue Service said: “Fire crews used an inflatable boat with a motor, salvage sheets and lifejackets to rescue the four casualties, passing them to the care of paramedics.
“Two casualties were taken to hospital for further medical checks.
“Fire crews were in attendance for approximately two hours and twenty minutes.”