A nearby hospital was also evacuated when water entered the building.
One of the boys was under water for about 13 minutes before firefighters could locate him.
A woman stuck in a half submerged van on a flooded road south of Mascoutah, Illinois has been rescued.
Spokesman Jeff Ochs told KMOX a pick-up truck drove straight into floodwaters on Firma Road near Highway 79 around 5 a.m. and got trapped.
Robert Salsberry, one of two men who jumped in after the boy, said the force of the raging river sucked the boy into a nearby culvert pipe.
The hunters called for help around 3 p.m. after they became trapped by flood waters near Boiling Springs, south of Licking, Missouri.
Ten students rescued from school bus stuck in water in Illinois Thursday night.
Man who’s boat capsized is missing