Cumbria Fire Service are warning people not to swim in the county's reservoirs.At Thirlmere today they were practicing water rescue techniques ahead of the summer rise in call outs to help swimmers in distress.
In the last five years nine people have drowned after getting into difficulties in man made lakes.Paul Phillips manages Thirlmere for United Utilities. He said:
A new safety video has been launched highlighting the dangers of swimming reservoirs its called "Not a Game."
Below is the full video.