Fire and ambulance crews were called to Julian's Bridge in Wimborne in Dorset at around 12.30 am following reports that a man had fallen into the river.
By the time they arrived the man had been helped to the river bank by a friend. Using a spinal board ambulance crews took the man to hospital.
More top news
The Electrical Safety First charity is warning homeowners to avoid using any electrical appliances that have been recalled.
Tuesday afternoon's weather for the east of the region
Tuesday afternoon's weather for the west of the region