Kern County Chief Park Ranger Ron Rice said a man drowned in Buena Vista Lake Monday afternoon while trying to swim.
A 21-year-old man was attempting to swim past the buoy when the current caused him to struggle.
Rice said he was not wearing a life jacket at the time of the incident.
A bystander pulled him out of the lake near the jet ski dock. Once ambulance arrived, they performed CPR but were unable to revive him.
He was transported to Mercy Southwest Hospital where he later died.
His identity has not yet been released by the Coroner.
Rice said it is unclear if alcohol was a factor.