Sunbury Lock

Sunbury Lock
Sunbury lock with boats in the older hand-operated lock. The new lock is on the right
51°24′18.5″N 0°24′22″W / 51.405139°N 0.40611°W / 51.405139; -0.40611 (Sunbury Lock)
Waterway	River Thames
County	Surrey
Maintained by	Environment Agency
Operation	Old Manual New Hydraulic
First built	1812 (removed) 1856 (middle) 1927 (bankside)
Length	Old 47.15 m (154 ft 8 in) New 62.78 m (206 ft 0 in) [1]
Width	Old 5.86 m (19 ft 3 in) New 7.41 m (24 ft 4 in) [1]
Fall	Both locks 1.87 m (6 ft 2 in)[1]
Above sea level	27 feet (8 m)
Distance to Teddington Lock	8 miles
Power is available out of hours

v t e Sunbury Lock the Walton, Weybridge and Shepperton reach of the Thames
Legend
River Thames above Shepperton Lock Pharaoh's Island Hamhaugh & Shepperton Lock Islands weirs & Shepperton Lock Bourne or the Chertsey Bourne Thames Lock weir of River Wey weir of River Wey Wey and Godalming Navigations D'Oyly Carte Island Historic Church and Manor House, Shepperton Desborough Island A244 Walton Bridge marinas The "Walton Mile" Tumbling bay weir River Ash (distributary of Colne) Storm weir Wheatleys Ait north Sunbury main weir Sunbury Lock Ait moorings boat rollers Sunbury Lock manual Lock River Thames above Molesey Lock

Sunbury Lock is a lock complex of the River Thames in England near Walton-on-Thames in north-west Surrey, the third lowest of forty four on the non-tidal reaches. The complex adjoins the right, southern bank about 1⁄2 mile (0.80 km) downstream of the Weir Hotel.

The complex is two locks, old and new, and a narrow concrete divide, which are downstream of the original lock built in 1812. The older, hand-operated, was originally built in 1856, seldom used. The newer was opened in 1927 by Lord Desborough. Rollers and a slope adjoins for the portage (hauling) of small boats. The lock adjoins Sunbury Lock Ait.

The lock has three associated weirs, upstream. The main weir is between Sunbury Lock Ait and Wheatley's Ait (north); the latter has two other weirs, one is a small part-time weir used in high flows.