One ambulance and one rapid response vehicle attended. The patient was transported to Dunedin Hospital with serious injuries, a St John spokeswoman said.
A police spokeswoman said the person had slipped and fallen into the Water of Leith near the intersection of Duke St and Castle St North.
Although the water was not deep, he was unable to get out.
The man was retrieved from the water about 10.30pm, she said.
A Fire and Emergency New Zealand spokeswoman said two crews, from Dunedin City and Willowbank Stations, assisted with extrication.
One crew from Dunedin City Station attended a ‘‘bonfire’’ in Castle St about 10pm which it extinguished with a hose reel.
Yesterday morning the charred remains of a couch could be seen in the front yard of a flat at 617 Castle St North.
The surrounding streets were strewn with broken glass and rubbish.
The couch fire follows one which occurred in the same location on St Patrick’s Day and another last Saturday in Logan Park Dr.
