A teenager was taken to hospital from a popular beauty spot today after being rescued by a brave member of the public after getting into trouble in water.

The teenager had gone for a swim in the Blue Lagoon ­— officially known as Ward’s Reservoir ­— in Belmont, earlier today to "cool off" but ended up getting into difficulty.

Police say a member of the public jumped to their safety and brought the teenager out of the water before calling the emergency services.

They were taken to hospital for treatment and are now recovering, however, the police are now emphasising the dangers of swimming in reservoirs like this.

Blackburn with Darwen Police said:"Police today have attended 'The Blue Lagoon' off Stones Bank Road Darwen after a report that a young teenager had been swimming in a bid to cool off.

"Unfortunately he got into difficulty and a concerned member if the public very bravely dragged him from the water to safety and called police and ambulance for assistance.

"Although this was commendable I urge everyone not to swim in these areas as it is not safe.

"We understand that the weather was beautiful and you want to enjoy the scenery but please use some common sense, don't drink and swim in these areas, next time it might not be such a good outcome. The young man was conveyed to hospital where is was treated and is recovering.

"Enjoy the rest of your weekend and stay safe."