Bystanders say they saw the young boy go into Lake Palestine Wednesday afternoon.
Authorities say Mark Allen Brooks, 7, lived just off of the lake in the Sunrise Shores addition in Henderson County.
Westside Volunteer Firefighters found Brooks in the lake near a dock and performed CPR. He was then airlifted to ETMC in Tyler, where he was pronounced dead.
Authorities are reminding parents not to leave their children unattended around water.
"During the summer months, it gets hot, and you know, kids love water," Chris Moore, captain of the Westside Volunteer Fire Department, said. "You should always try to make sure that the kids are with parents or adults or, you know, my son's 16, and he's got to be with someone that can pull him out."