An 18-year-old teenager dies after being recovered from a reservoir in Greater Manchester during a period of soaring temperatures. Police and emergency services respond to reports involving open water, and the teenager is later pronounced dead at the scene, according to accounts from multiple outlets. The death occurs amid a wider UK heatwave, with temperatures reported as record-breaking. Authorities issue warnings about the risks of going into open water, particularly during hot weather when people may be more likely to swim or enter reservoirs and lakes. One report notes the body is recovered from the reservoir, while another states the teenager is pronounced dead. A separate outlet also places the incident within the context of other recent deaths in reservoirs and lakes around the country during the same hot spell. The information across sources is consistent on the location (Greater Manchester), the timing (during the heatwave), the age of the victim (18), and the fact that the teenager is found in the reservoir and dies at the scene or is recovered and confirmed deceased.