Sheffield Lock was built between 1718 and 1723 under the supervision of the engineer
John Hore of Newbury, and this stretch of the river is now administered by the
Canal & River Trust as part of the Kennet Navigation. It has a change in level of . The lock was built in the early 18th century and was originally turf-sided. It was enlarged in the mid 18th century to cope with larger "Newbury barges" and has 20th century alterations. It consists of brick chamber walls of 11 scalloped bays, with brick coping and has 2 sets of double wooden gates, all with mechanical gate paddle gearing. The lock is Grade II
listed, and a
scheduled monument. ==References==