Weir And Fish Lock North East Of Old Fish Locks House

The weir and fish lock, located to the north-east of Old Fish Locks House, dates from the mid-18th century and is believed to have been constructed by William Emerson of Hurworth. It features large, roughly-squared sandstone blocks that span approximately 50 metres across the River Tees, forming a curving weir. The fish lock is made of dressed stone and the height of the weir was reduced by about 0.75 metre in the late 19th century. Originally, there were two fish locks built partly into the river bank at either end of the weir, but the west lock has been destroyed. The east lock is a small square-plan structure with round archways on both the upstream and downstream faces, and it is said to contain a stone fish ladder. This structure is situated across the parishes of Low Dinsdale and Over Dinsdale.