Editing Teddington Lock (section)

{{Short description|Series of locks on the River Thames in London}}
{{Use British English|date=October 2013}}
{{Use dmy dates|date=January 2024}}
{{Stack begin}}
{{Infobox waterlock
| name          = Teddington Lock
| image         = TeddLock.JPG
| image_upright = 1.1
| caption       = Teddington Lock undergoing maintenance. From left to right – rollers, skiff lock, launch lock and barge lock
| waterway      = [[River Thames]]
| country       = England
| county        = [[Greater London]]
| maint         = [[Environment Agency]]
| operation     = {{unbulleted list
  | Launch: Hydraulic
  | Skiff: Manual
  | Barge: Hydraulic
  }}
| first         = {{unbulleted list
  | Launch: 1811
  | Skiff: 1858
  | Barge: 1904
  }}
| length        = {{unbulleted list
  | Launch: {{convert|54.22|m|ftin|abbr=on}}
  | Skiff:  {{convert|15.08|m|ftin|abbr=on}}
  | Barge:  {{convert|198.12|m|ftin|abbr=on}}
  }} <ref name="EnvAgency" >{{cite web |url=http://a0768b4a8a31e106d8b0-50dc802554eb38a24458b98ff72d550b.r19.cf3.rackcdn.com/geth0309bpgk-e-e.pdf |title=A User's Guide to the River Thames |pages=29–30 |year=2009 |work=PDF file |publisher=Environmental Agency |access-date=11 November 2012}}</ref>
| width         = {{unbulleted list
  | Launch: {{convert|7.41|m|ftin|abbr=on}}
  | Skiff:  {{convert|1.77|m|ftin|abbr=on}}
  | Barge:  {{convert|7.54|m|ftin|abbr=on}}
  }} <ref name="EnvAgency" />
| fall          = {{convert|2.68|m|ftin|abbr=on}} <ref name="EnvAgency" />
| sealevel      = {{convert|14|ft|m|abbr=on}}
| map_image     = 
| pushpin_map   = United Kingdom Greater London#United Kingdom London Richmond upon Thames
| pushpin_map_size = 
| pushpin_map_caption = Location in Greater London##Location in Richmond upon Thames
| coordinates   = {{Coord|51|25|54|N|0|19|26|W|type:landmark_region:GB|display=inline,title}} <ref>{{cite web |url=http://teddington-lock.co.uk/ |title=Teddington Lock website |access-date=3 March 2017}}</ref>
| extra         = Teddington is normally staffed 24 hours a day
}}
{{Teddington Lock map}}
[[File:Teddington Lock 2.jpg|right|thumb|Barrage at Teddington Lock]]
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'''Teddington Lock''' is a complex of three [[lock (water transport)|locks]] and a [[weir]] on the [[River Thames]] between [[Ham, London|Ham]] and [[Teddington]] in the [[London Borough of Richmond upon Thames]], England.  Historically in [[Middlesex]], it was first built in 1810.

The limit of legal powers between the [[Port of London Authority]], the navigation authority downstream to the [[North Sea]] and that upstream to small headwaters of the river, the [[Environment Agency]], is marked nearby by an [[obelisk]] on the "[[Surrey]]" ([[Thames Path|towpath]], right) bank.{{refn|group=n|A bank of the River Thames by convention takes as its name its [[Historic counties of England|historic county]], [[boxing the compass|compass point]] or a general north ([[Bank (geography)|left]]) or general south (right) description}}  The weir named '''Teddington Weir''' marks the river's usual [[tidal limit]] and is the lowest on the Thames. This lock is the lowest full-tide lock and second lowest of all-tide locks on the Thames.

The complex of civil engineering or infrastructure in essence consists of a large long weir and three locks: a conventional launch lock in regular use, very large barge lock and a small [[Thames skiff|skiff]] lock. The barge lock was made to accommodate long barges, steamers or [[passenger ferries]] and has an additional set of gates half-way to operate more quickly for shorter craft. The staggered structures incorporate two reinforced narrow islands. The upper island is traversed by and accessible by the lock gates or [[Teddington Lock Footbridge]].