RedactedNarrative: Subject was setting his mooring while using his kayak.  At some point the kayak overturned putting subject in to the water.  Subject was not wearing a life jacket.  As he clung to the kayak he was yelling for help.  The witness heard the yelling, grabbed a nearby canoe and brought subject to shore.  Based on the low water temp subject was treated for hypothermia and transported to the hospital.