Victims went out beaver hunting on the flooded Maple River.  They unloaded upstream of a bridge, and were found downstream of bridge.  It would require both persons in the boat to duck/lay down while passing under the bridge.  The victims dd not bring PFD's, their safety device was a rope tied to the boat and then wrapped around each others leg.  It is possible that one of them fell out and the weight outside the boat on the rope swamped the boat in strong flood water currents.  The boat was found capsized 1.5 miles from where the victims launched the boat.
Bufalo                        