A Woodstock man drowned Sunday at Lake Allatoona, authorities said.

Just before 2 p.m., Cherokee County Sheriff's deputies responded to the Galt's Ferry Day Use area near Acworth.

Rigoberto Lara Hernandez, 34, was seen floating in the lake, Sheriff's spokesman Lt. Jay Baker said in an email.

Hernandez was taken to WellStar Kennestone Hospital, where he was pronounced dead, authorities said.

He had gone swimming after a family picnic, Baker said.