Beach officials tell NewsChannel 3 this happened in the 700 block of Alder Circle at a neighborhood pool.
Gall jumped in and rescued the boy. He says the 11-year-old was breathing once he got him out of the water.
Gall told NewsChannel 3 the child's mother believed he was having a seizure when he went under.
When EMS arrived on the scene, the boy was flown to the hospital.
Rescue crews did not have to perform CPR because they say he was breathing the whole time.
CHKD says the boy is being held overnight for observation.