The site of a modern tail race. The Ordnance Survey First Edition mapping of 1869 shows a mill race extending 190 metres downstream from a suspected water mill (PRN 2374.30), exiting into the harbour below the bridge at the grid reference provided. 
It is not clear if this race also served the later turbine house, or whether the latter had a shortened tail race rejoining the river close by. The tail race is now largely obscured, but its line can be picked up intermittently, and its exit is still visible.