[nb 1] It was engineered by John Blackwell, who had dug a new 600-yard (550 m) cut to avoid the meandering River Kennet between Padworth and Sulhamstead.

[1] The lock's depth was just 1 foot 9 inches (0.53 m),[2] which was to improve the head of water at Towney Lock, 0.6 miles (0.97 km) upstream.

[1] When the waterway was restored in the 1960s, restoring the shallow lock was deemed unpractical and instead the rebuilt Towney Lock was deepened to cater for the difference in level.

[3] The lock gates were removed, although the chamber masonry and bollards have been retained as a landing stage for the adjacent swing bridge.

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