Police and emergency services were called to the scene during the afternoon.
One person is taken to hospital by ambulance helicopter. The extent of the injury is unknown.
– We are ready with the rescue operation on site. We received the alarm at 16.16 that three people were missing after a canoe trip. Two people were found quite quickly, but we had to look further for the third, says Anna Nordlund at the Rescue Service.
The emergency services left the scene at 7 p.m.