Crews who were working to help two men trapped inside their pickup on Sunday heard someone crying for help near Highway 150, between New Waverly and Coldspring.
Rescuers said a husband and wife were trying to cross some swift floodwater in a truck when they were swept away with their infant daughter.
The couple attempted to escape the truck, but ended up becoming trapped in some trees downstream near a bridge.
The baby was pulled from her mother's arms, and has not been seen since.
Firefighters from New Waverly and Punkin-Evergreen were able to rescue the couple, in addition to the two men who were trapped.
Report a typo to the ABC13 staff