Police in the Vale of Glamorgan have been given additional powers to direct people to leave Comeston Lakes Country Park, following reports of anti social behaviour.
The order, confirmed by South Wales Police on Wednesday, enables officers to direct individuals or groups to leave the area for 48 hours if their behaviour has, or is likely to contribute to disorder or cause harassment, alarm or distress to members of the public.
South Wales Police says there have also been reports of young people swimming and jumping into the lake.
The dispersal order will remain in place until Friday evening, with police patrolling the park.
The force is asking parents to speak to their children or young people about the dangers of swimming and jumping into lakes and open waters.
Rob Thomas, Chief Executive of the Vale of Glamorgan Council, said: “We have been in discussion with South Wales Police about this situation, which has escalated throughout the day. Large numbers of teenagers have been jumping into the water and engaging in anti-social behaviour."
“Repeated requests to stop have been ignored, as have warnings about the risks of entering open water without lifeguards and safety precautions in place.
“Council staff have been met with abuse as they attempt to protect youngsters from serious injury.
“Cold water shock can kill as can strong currents and hidden hazards.”

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