Netham Lock
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Netham lock (grid reference ST616727) is the point at Netham in Bristol at which boats from the River Avon, acting as part of the Kennet and Avon Canal, gain access to Bristol's Floating Harbour.
Construction started in 1804 to build the tidal New Cut and divert the River Avon along the Feeder Canal to the harbour; a system designed and built by William Jessop and later improved by Isambard Kingdom Brunel.[1]
A weir carries the river into the New Cut and boats use the adjacent lock. High tides often pass over the weir, and the river is effectively tidal to the next lock upstream at Hanham. Some spring tides can also pass over the weir at Hanham, making the river tidal as far as Keynsham lock.[2]
Access to the harbour is only possible during the day when the lock keeper will open the gates unless the water level in the river between Netham and Hanham is above or below the level of the harbour.[3]
The maximum dimensions of a vessel which can pass through Netham Lock are:
- Length: 24.4 metres (80 ft)
- Beam: 5.4 metres (18 ft)
- Draught: 1.9 metres (6.2 ft)
- Headroom: 3.1 metres (10 ft)[3]
The lock-keeper's cottage, built in the early nineteenth century, is a grade II listed building and has a plaque listing it as Bristol Docks building number 1.[1] The floral displays around the cottage and on the banking have attracted praise.[4]
Netham Lock and the weir form part of Bristol's flood defence mechanisms and it was announced in December 2008 that they would be upgraded as part of the £11 million City Docks Capital Project.[5]
See also
References
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- Prince's Wharf, including M Shed ( formerly Bristol Industrial Museum), Pyronaut and Mayflower adjoining Prince Street Bridge
- Dry docks: SS Great Britain, the Matthew
- St Augustine's Reach, Pero's Bridge
- Bathurst Basin
- Queen Square
- Bristol Temple Meads railway station
- Castle Park
- Redcliffe Quay and Redcliffe Caves
- Baltic Wharf marina
- Cumberland Basin & Brunel Locks
- The New Cut
- Netham Lock, entrance to the Feeder Canal
- Totterdown Basin
- Temple Quay
- The Centre
- Canons Marsh, including Millennium Square and At-Bristol
- Underfall Yard
- Bristol Bridge
| Next lock upstream | River Avon, Bristol / Kennet and Avon Canal | Next lock downstream |
| Hanham Lock | Netham Lock Grid reference: ST614727 |
Bristol Harbour entrance lock |
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- Buildings and structures in Bristol
- Transport in Bristol
- Locks on the Kennet and Avon Canal
- Bristol Harbourside
- River Avon, Bristol
