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The actual measured tide levels in the last twenty four hours up to this moment, are shown below. The graph will automatically update itself. Note the distorted tidal curves (BLACK) at Richmond which result from the weir and shallow river. At times this even results in a double low water.
Note that on the ebb tide the moment at which the weir closes is usually marked by a distinct 'kink' in the trace at around 1.7m odn.
In October or November the weir is sometimes left open to facilitate maintenance ("draw-off"). The typical tide shape when this happens is shown below.


Navigating Richmond Lock and Weir -
PLA owns and operates Richmond Lock and Weir, which is also the base for the Upper River Harbour Service patrols between Putney and Teddington Lock.

Situated between Teddington and Richmond, the weir comprises three vertical steel sluice gates suspended from a footbridge. Each gate weighs 32.6 tonnes and is 20 metres wide and 3.64 metres in depth.

For around two hours each side of high tide, the sluice gates are raised into the footbridge structure above, allowing ships and boats to pass through the barrage. For the rest of the day the sluice gates are closed and passing river traffic must use the lock alongside the barrage.

This period of free navigation can be dramatically changed due to prevailing conditions. In drought conditions the gates will be closed for longer periods, whilst in periods of high fluvial flow they may remain open for much longer. For current information please contact the Lock Foreman on 0208 940 0634.

The sluice gates ensure that the water level betwen Richmond Lock and Teddington Lock is maintained at or above half-tide level.

The lock is 76m long and 8m wide. Use of the lock, which has a Lock Foreman on duty 24 hours a day, is charged at £5 for all classes of vessel (2010 charges):

When the sluice gates are down and the weir closed, the following signals are in operation:
By Day - 3 red discs in the form of an inverted triangle shown at each arch.
By Night - An inverted triangle of 3 red lights at each arch.
In addition an illuminated sign on the upper end of lock entrance reads ‘Weirs are closed please use Lock’. The lock must be used in these circumstances.

For approximately 2 hours either side of high water the weir sluice gates are raised allowing free passage. At these times the following signal is displayed by day and night:
2 amber lights shown at each arch - weir open, free navigation.

Mooring trots along the Deer Park bank are expressly for the use of those craft waiting to use the lock. Small craft rollers in the Isleworth bank arch are available for canoes and skiffs instead of locking.

At low water the depth below the weir is restricted and care should be taken when approaching from downstream. The maintained level of water above the weir is 1.72m above OD Newlyn.

"Drawdown" tide shape (the black line(


Black lines show levels during typical drawdown.


Richmond Half tide Lock
Richmond Half tide Lock, weir and rollers

 

Richmond weir and lock
Richmond weir and lock from upstream

 

1832: The removal of the old London Bridge meant that the levels at Teddington were lowered some two and a half feet. The Thames at Twickenham and Richmond was sometimes little more than a stream running between mudbanks.
 
1890: permission was granted to build a half-lock and weir downstream of Richmond Bridge. A barge lock was constructed against the Surrey Bank joined by a weir to three roller slipways for small craft on the Middlesex bank. As a superstructure was required to operate the sluice mechanism, it was agreed to construct this in the form of two footbridges.
300 feet long, 28 feet wide. Twin high-level footbridges pass over a lock capable of handling six river barges and a weir controlled by lifting sluice gates. Originally hand cranked, the sluice gates are now raised by electric power.
Engineer: F.G.M. Stoney. Contractors: Ramsomes and Rapier
 
1894: The footbridges were opened by the Duke and Duchess of York
 
1899: -

Richmond weir, Frith
Richmond weir from below, Francis Frith

1938: Footbridge tolls abolished.

1990s: PLA completed a major, £4 million refurbishment of the lock and weir.

1994: HRH Prince Andrew, Duke of York was, appropriately, guest of honour at celebrations of the system's Centenary.

Richmond Lock © 2002 Doug Myers
Richmond Lock © 2002 Doug Myers

 
 
 
 
 
Upstream to Twickenham Bridge




Introduction
Estuary
PLA
QEII Br
Barrier
Tower Br
Custom Ho
London Br
; Frost Fairs
Cannon St Rb
The Great Stink
Southwark Br
Millenium Br
Blackfriars Rb
Blackfriars Br
Waterloo Br
Charing Cross Rb
Westminster Br
Lambeth Br
Vauxhall Br
Victoria Rb
Chelsea Br
Albert Br
Battersea Br
Battersea Rb
Wandsworth Br
Fulham Rb
Putney Br
Hammersmith Br
Barnes Rb
Chiswick Br
Kew Rb
Kew Br
RICHMOND
Twickenham Br
Richmond Rb
Richmond Br
TEDDINGTON
Kingston Rb
Kingston Br
Ditton Slip
Hampton Br
MOLESEY
SUNBURY
Walton Br
Desborough Cut
SHEPPERTON
Chertsey Br
CHERTSEY
M3 Br
Laleham Slip
PENTON HOOK
Staines Rb
Staines Br
Runnymede Br
BELL WEIR
Magna Carta Is
OLD WINDSOR
Albert Br
Datchet
Victoria Br
Black Potts Rb
ROMNEY
Eton
Windsor Br
Windsor Rb
Windsor Slip
Elizabeth Br
BOVENEY
Dorney Lake
York Cut
Summerleaze Fb
MonkeyIsland
New Thames Br
BRAY
Bray Slip
Maidenhead Rb
Maidenhead Br
Below Boulters
BOULTERS
Cliveden
Hedsor
COOKHAM
Cookham Slip
Cookham Br
BourneEnd RFb
Quarry Woods
A404 Br
MARLOW
Marlow Br
Bisham
TEMPLE
HURLEY
Medmenham
Culham Ct
Aston Slip
HAMBLEDEN
Temple Is
Fawley Ct
Remenham
Regatta
Phyllis Ct
Henley Slip
Leander
Red Lion
Henley Br
Angel on Br
Landing
Hobbs Boatyard
Hobbs Slipway
MARSH
Hennerton
Bolney
Wargrave
Shiplake Rb
R.Loddon
SHIPLAKE
Sonning Br
SONNING
Dreadnought
K&A Canal
CAVERSHAM
Reading Br
Caversham Br
Reading Slip
Purley
MAPLEDURHAM
Hardwick Ho
Whitchurch Br
WHITCHURCH
Hartswood Reach
Gatehampton Rb
Goring Gap
Goring Br
GORING
Swan
CLEEVE
Moulsford
Moulsford Rb
Papist Way Slip
Winterbrook Br
Wallingford Br
BENSON
Shillingford Br
R.Thame
DAYS
Burcot
Clifton Hampden
Clifton Church
Clifton H Br
Barley Mow
Long Wittenham
CLIFTON
Appleford Rb
Sutton Courtenay
Sutton Br
CULHAM
Culham Cut Fb
Abingdon Slip
Abingdon
Abingdon Br
ABINGDON
Nuneham Rb
Nuneham
Nuneham Park
Radley Boats
SANDFORD
Rose Island
Kennington Rb
Isis Br
Iffley Mill
IFFLEY
Oxford Rowing
Isis
Donnington Br
Riverside Slip
Boathouses
Punting
Lower Cherwell
Upper Cherwell
Islip
Head of River
Salters Steamers
Folly Br
Bacons Folly
Oxford Fb
Osney Fb
Weir stream
Osney Rb
Bullstake Stream
Osney Marina
OSNEY
Osney Br
Four Rivers
OLD RIVER
CANAL
Medley Weir Site
Medley Fb
Bossoms
Perch
Trout
GODSTOW
Godstow Nunnery
Godstow Br
Thames Br
KINGS
River Evenlode
EYNSHAM
Swinford Br
Oxford Cruisers
PINKHILL
Farmoor
Stanton Harcourt
Bablock Slip
Arks Weir Site
NORTHMOOR
Harts Fb
//Rose Revived
Newbridge
//Maybush
River Windrush
below Shifford
SHIFFORD
Shifford Fb
Tenfoot Fb
Trout Inn
Tadpole Br
RUSHEY
Old Mans Fb
RADCOT
Radcot Cradle Fb
Swan Inn
Radcot New Br
Radcot Old Br
GRAFTON
Eaton Hastings
Kelmscott
Eaton Fb
BUSCOT
Bloomers Hole Fb
Trout Inn
St Johns Br
ST JOHNS
Halfpenny Br
Marina Slip
LIMIT
Inglesham
Hannington Br
Kempsford
Castle Eaton Br
Marston Meysey
A419 Br
Cricklade
SOURCE?
THAMES HEAD
SEVEN SPRINGS