The girl was between 6 and 13, officials said
An investigation is underway after HPD said there were reports of shots fired in the area on Wednesday afternoon.
Houston Police Department said its dive team and homicide detectives were called to the scene after a body was found in a retention pond.
HPD said the woman's body had been burned and showed signs of foul play.
According to the Houston Police Department, someone spotted the victim's body in a grassy area by the south bank of the Addicks Reservoir near the North Eldridge bridge a little after 6 p.m.
Police identified the woman, whose body was found partially burned last month, as 33-year-old Yvonne Lopez.