Authorities have identified Abdiaziz Omar, 17, of Columbus' Northeast Side as the teen who drowned June 10 in the Hoover Reservoir.
Omar was with a group of youths who were "cliff jumping" when he failed to resurface just before 8 p.m., according to police records.
A Facebook post from Genoa Township Police Department, which responded to the incident, said the teen had struggled with a strong current prior to submerging. Swimming is prohibited in all reservoirs owned by the city of Columbus, including Hoover Reservoir.
Several 911 calls were made from the area near 5560 Sunbury Road. There were reports of people crying and others in the water trying to help.
One man who lives nearby told dispatchers that groups of kids had been swimming there recently.
"They keep running them out and they keep coming back," he told a dispatcher.
The water depth ranges from a few feet near shore to as much as 40 feet elsewhere. Near dams, water can be as deep as 60 feet, according to maps on the Ohio Division of Wildlife website.
The cliffs are more like ledges and often used to cast fishing lines, said Genoa police Lt. Rich Lyon. But occasionally they are used to jump into the reservoir.
"Any time a time a youth dies, that's a problem," Lyon said. "There's no swimming allowed, and there are peaks and valleys underwater with temperature differences. It's a dangerous body of water."
"You may think it's clear, but three feet out, there may be another ledge down there."
The death follows a series of seven other water-related deaths in central Ohio in May.