Caversham Lakes has announced customers may only enter the water with flotation aids.

The rule change comes just a day after the tragic death of a girl at a separate water park in Windsor.

'Between 30 and 40 people' rushed into the lake at Liquid Leisure on Saturday after an 11-year-old girl got into difficulty in the water at around 3.45pm.

She was located at 5.10pm and rushed to Wexham Park Hospital where she later died.

Extra safety measures were introduced by Caversham Lakes water sports and aqua park, in Henley Road, on Sunday.

READ MORE: Smelly Alley cheese and beer shop to open bar

In a statement the company said: “We have decided to make the unprecedented decision that as of today all children and adults using the Family Beach must wear a buoyancy aid, arm bands or tow float to enter the water.

“Open water can be dangerous even with experienced swimmers, so to ensure all customers are safe we are taking these extra measures so everyone can enjoy the water safely.

“All customers must be competent swimmers and confident in the water. Never go beyond your limits and always swim with a buddy for extra support.

“As always our water safety team will be on hand at all times keeping a close eye on everyone on the Family Beach.

“If you need any assistance or have any questions please feel free to ask a member of our team at the lake.”

The move was made just one day after the tragic incident elsewhere in the county.

READ MORE: Dozens of officers dismissed from Thames Valley Police in five years

The girl’s death at Liquid Leisure is being treated as unexplained and an investigation has been launched, Thames Valley Police said. Police are yet to confirm how the tragic incident happened.

Although formal identification has yet to take place, the girl’s next of kin have been informed and they are being offered support by officers.

“Our thoughts and prayers are with the family, friends and all those effected by this desperately tragic and upsetting incident,” Liquid leisure said in a statement.

“As Thames Valley Police are in the early stages of an investigation it would not be right for us to add further comment, but we will continue to fully support and assist them throughout the process.”