RedactedNarrative: The victims put the canoe onto the South Fork of The Shenandoah River at the island ford boat ramp at approximately 1130.  The conditions of the river were poor; a flood advisory had been issued by the NWS around 1030.  The victims stated that the water was into the parking lot of the boat ramp but they did not think the conditions were all that bad.  The river water levels were rising throughout the day reaching a max. of 14 feet..  The victims said they were attempting to get out of the river due to swift water conditions in the area of Waterloo Mill Road when they hit a submerged object in the water causing them to overturn.  The vessel was swept away and the victims were left in two trees to be rescued by a swift water team.  The victims stated they had been in the tree for several hours before they were rescued.