Right bank, length: 250', width: 26'8"
The water level above Richmond lock is maintained at, at least, 1.72 m above ODN.
(ie it is tidal but the weir prevents it from falling below this level).
the three miles between Teddington and Richmond are only truly tidal for about 2 hours before and 2 hours after high tide.
High tide at Richmond is about 1 hour after high water at London Bridge
with low tide being between 3 and 3½ hours after low water at London Bridge.
See Thames Online Tides for heights at this moment.
Navigating Richmond Lock and Weir

Richmond Half tide Lock, weir and rollers

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 from below, Francis Frith
1938: Footbridge tolls abolished.

Richmond Lock © 2002 Doug Myers

Richmond weir open, going upstream

Richmond weir shut going upstream
Tides this week
Actual Tide level at Richmond
Upstream to Twickenham Bridge
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
