The boat was traveling south on the Snake River just north of the town of Asotin.  The operator was not familiar with the river and it was still dark outside.  The river has turn to the left and the operator did not make the turn and went over a beaver dam. struck the shore, and then hit a tree, coming to a rest on the hsore.  Both the operator and the passenger remained in the boat and were injured when they hit the front part of the boat.  The passenger was wearing a type 5 floatation device.
Asotin                        