Hanham Lock is a

canal lock A lock is a device used for raising and lowering boats, ships and other watercraft between stretches of water of different levels on river and canal waterways. The distinguishing feature of a lock is a fixed chamber in which the water lev ...

situated on the River Avon, at the village of

Hanham Hanham is a suburb of Bristol. It is located in the south east of the city. Hanham is in the unitary authority of South Gloucestershire. It became a civil parish on 1 April 2003. The post code area of Hanham is BS15. The population of thi ...

near

Bristol Bristol () is a city, ceremonial county and unitary authority in England. Situated on the River Avon, it is bordered by the ceremonial counties of Gloucestershire to the north and Somerset to the south. Bristol is the most populous city i ...

, England. The Bristol Avon Navigation, which runs the from the Kennet and Avon Canal at Hanham Lock to the Bristol Channel at Avonmouth, was constructed between 1724 and 1727, following legislation passed by Queen Anne, by a company of proprietors and the engineer John Hore of Newbury. The first cargo of 'Deal boards, Pig-Lead and Meal' arrived in Bath in December 1727. The navigation is now administered by the Canal & River Trust. Hanham Lock is the first lock east of

Netham Easton is an inner city area of the city of Bristol in the United Kingdom. Informally the area is considered to stretch east of Bristol city centre and the M32 motorway, centred on Lawrence Hill. Its southern and eastern borders are less define ...

where boats leave the Bristol Floating Harbour. A

weir A weir or low head dam is a barrier across the width of a river that alters the flow characteristics of water and usually results in a change in the height of the river level. Weirs are also used to control the flow of water for outlets of l ...

carries the river and boats use the adjacent lock. It is numbered as 1 and is officially the first on the

Kennet and Avon Canal The Kennet and Avon Canal is a waterway in southern England with an overall length of , made up of two lengths of navigable river linked by a canal. The name is used to refer to the entire length of the navigation rather than solely to the c ...

. It opened in 1727 and there used to be a colliery wharf just west of the lock, however the mines closed in the 19th century. The river below Hanham Lock is considered to be tidal, as high tides often pass over the weir at Netham. Some spring tides will also pass over the weir here, making the river tidal up to Keynsham Lock. The canal superintendent's house was built here, now a Grade II

listed building In the United Kingdom, a listed building or listed structure is one that has been placed on one of the four statutory lists maintained by Historic England in England, Historic Environment Scotland in Scotland, in Wales, and the Northern I ...

; it is called "Picnic House". In front of this house once stood Hanham Mills, an archway over the towpath being all that remained of the mills until 1897, when the Hanham Abbotts Parish Church had the archway demolished due to its poor state of repair. Just above the lock are some permanent and visitor moorings and two pubs.

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See also