RedactedNarrative: A group containing three adults and seven minors set out in five kayaks (Vessels 1, 2, 3, 4, 5); the location of each party in a vessel was determined as well as possible based on the fact that none of the parties involved in the incident recalled exactly which vessel they were in during the events involved and leading up to the incident. Without firm knowledge on the whereabouts of all parties with relation to the vessels, this is being submitted in one incident.  All of the vessels were recreational in nature and did not have spray skirts or other means to repel water.  None of the parties involved in the incident had formal training in paddling, river running, or river rescue. 
  
  Shortly after launching, the party went through a washed out dam area, encountering 1-2 foot standing waves.  At this time, one of the vessels capsized and was washed downstream (not able to determine which of the five vessels as it was later recovered).  Following this initial issue four members of the party opted to leave the water and took one of the vessels with them.  The remainder of the party continued downstream. 
  
  As the remaining party continued downstream, the missing vessel was observed pinned to the bridge pier in the middle of the river.  While trying to retrieve the lost vessel, another vessel in the group capsized, losing this vessel downstream, resulting in one of the Victims getting swept under a tree and then downstream.  This Victim was able to swim to shore.  Another Victim from the same vessel climbed onto a tree in the middle of the river. 
  
  Other members of the party beached on the east bank of the river and tried to assist the parties remaining in the water; emergency services were also contacted by witnesses on the bridge.  All parties were assisted to shore, and four members of the original group were transported to the hospital for attention. The remaining missing vessel was recovered the following day. 
  
  The Chagrin River watershed received between 0.43 and 3.37 inches inches of rain the day preceding this incident, which swelled the river from an average flow of 100 cubic feet per second to 7,000 cubic feet per second.ccfs