Witness on shore saw a male in a black t shirt in a canoe--the canoe tipped causing the individual to fall out.  The male did not have a lifejacket on.  The male tried to swim after the canoe which had floated away and then turned and headed for shore.  He was yelling for help and then disappeared.  The witness ran back to his campsite and called 911 on the cell phone.
Minot                         