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.
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Southend United are promoted to League One after a nail-biting play-off final against Wycombe, which they won 7-6 on penalties.
Kate Haskell has the weekend forecast for the east of the region
Kate Haskell has the weekend forecast for the west of the region.