The Gainesville Police Department closed Longwood Park Wednesday morning while officers investigated a drowning.
Sgt. Kevin Holbrook said the woman's body was discovered just after 8 a.m.
"Early indications are that individuals at the park located the body in Lake Lanier," Holbrook said.
Holbrook said the victim has been recovered from the water, and he said officers do not suspect foul play.
"There were some items located in close proximity [to the body] and at this time we believe this was a possible suicide," Holbrook said.
At last report, police were waiting on autopsy results.