The office said Thursday the cause of the girl's death has not been determined.
Oklahoma City Fire Department Deputy Chief Marc Woodard says the girl's body was recovered Wednesday in Oklahoma City, about two miles from where she and her family sheltered from the tornado in a storm drain. Woodard says she hasn't been formally identified.
He says another child is still unaccounted for after the May 31 flooding.
A total of 48 deaths have been blamed on storms that raked across central Oklahoma in May, including two people who died on May 19 and 24 who were killed on May 20.