It comes as the family of 13-year-old Robert Hattersley said they are “absolutely devastated” after he died after getting into trouble on the River Tyne in Northumberland on Sunday.
Emergency services also confirmed the deaths of a 16-year-old boy in Salford Quays, Greater Manchester, a 16-year-old boy in Bray Lake near Maidenhead, Berkshire, and a 50-year-old man in a reservoir near Leeds in similar circumstances.
Detective Inspector Phil Hughes, of Leeds CID, said of the latter: “This incident serves as a timely reminder about the dangers of swimming in open water.”
Northumbria Police said Robert’s death in Ovingham “does act as a poignant and timely reminder as to the potential dangers presented by water”.
The Crawcrook teenager’s family said he would bring “a smile to so many people’s faces”.
In a tribute, they said: “It is impossible to put into words the heartbreak we are feeling. Robert was so kind and loving. We are absolutely devastated by what has happened.
“He brought a smile to so many people’s faces and he will be missed by absolutely everyone who knew and loved him.
“We’d like to thank all the emergency services who worked so hard to try to find Robert, as well as everyone who has been in touch passing on their messages of condolence.”
#Heatwave 2022 may be here, but remember the water is still cold enough to cause cold water shock. If you get into trouble in the water, lean back and use your arms and legs to help you #FloatToLive. pic.twitter.com/VV4xajCEng
— RNLI (@RNLI) July 18, 2022
Police said Robert’s body was found after an extensive search, which started shortly before 4.15pm on Sunday.
Newly appointed Health Secretary Steve Barclay warned of “significant dangers” for people tempted to swim in a river to cool off amid the soaring temperatures.
Asked whether people should be going outside and visiting beaches, Mr Barclay told reporters people should use “common sense” and follow the advice of public health experts.
That meant “hydration, covering up, being in the shade, avoiding the times of the day when heat is at its peak”.
He added: “There is a particular message, particularly for teenagers, children, some of those who may be tempted to go for a swim – there’s significant dangers of that, quite often when people go swimming in rivers when we have very hot weather.
“So it’s following common sense steps and keeping an eye on neighbours and those who are vulnerable, and following the guidance that’s been put out by the relevant bodies.”