Lock Dimensions
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 The table below lists the dates and dimensions of each of the lock and weir structures on the River Lea and Lee Navigation.  A blank space indicates that the date or dimension is not (yet) known.  I hope that further research will enable me to fill in at least some of the spaces.

Where a series of different names were given to a structure, for simplicity I have only used one, (usually the modern version). The current details of the existing structure are shown in bold. The use of italics indicates a reasonable doubt concerning the accuracy of a date or dimension. Some of the 17th and 18th century dates are educated guesses based on contemporary documents or are derived from statements made in the Trust or Conservancy minutes.  A plus (+) sign after a date means that the change took place after the year shown.

The details for each particular lock are repeated on the relevant page.

To look at the dimensions in metric, click here.

Lock State Date Length Length - Working Distance Width Fall Removed or bypassed
Upper Turnpike Extant c1658 ~ ~   2' 0'' 1769
Lower Turnpike Extant c1658 ~ ~   1' 5 5/8'' 1769
Constans Weir Extant c1658 ~ ~   1' 10 7/16'' 1769
Constans Weir Rebuilt 1750 ~ ~   1' 10 7/16'' 1769
Unnamed Weir     ~ ~   1' 10'' 1769
Hertford Lock Built 1769       7' 6'' 1865
Hertford Lock Rebuilt 1865 89' 0'' 85' 0'' 18' 6'' 7' 11''  
               
Ware Lock  (bought by New River Co 1738) Built  1658       5' 10 1/4'' 1742
Ware Lock  Rebuilt 1742       7' 10'' 1832
Ware Lock (in present position) Built  1832     14' 0'' 7' 9'' 1922
Ware Lock Rebuilt 1922 90' 0'' 87' 0'' 16' 0''' 7' 9''  
               
Portobello Turnpike Built 1740 ~ ~ 15' 0'' 11 7/16'' c1767
Weir which may have been taken into... Extant  1741 ~ ~   1' 9 7/16'' c1767
....Mrs Hadsley's Lock Built 1767       2' 1841
Ware Weir Extant 1725 ~ ~   2' 9''  
               
Hardmead (Dolemead) Lock Extant  1780         1858
Hardmead Lock Rebuilt 1858 92' 3'' 87' 0'' 16' 0'' 5' 5''  
               
Amwell Marsh Lock Extant 1772         1857
               
Stanstead Turnpike Built 1743 ~ ~ 15' 0'' 6' 9'' c1767
Stanstead Weir Extant 1725 ~ ~   3' 6'' c1767
Stanstead Old Lock Built 1767         1857
Stanstead Lock (in present position) Built 1857 89' 0'' 85' 0'' 16' 0'' 8' 4''  
               
Mr Field's Lower Weir Extant  1725 ~ ~   3' 6'' 1767
Mr Archer's Weir Extant  1725 ~  ~   1' 0'' 1767
Feildes Weir Lock Built 1767     13' 5'' 3' 8'' 1922
Feildes Weir Lock Rebuilt 1922 90' 0'' 87' 0'' 16' 0'' 3' 7''  
               
Mr Plummer's Weir Extant 1741 ~ ~   1' 9''  
Dobbs Turnpike Built 1758 ~ ~ 18' 0'' 1' 9'' 1767
Dobbs Weir Lock (in present position) Built  1767     13' 3'' 5' 1'' 1922
Dobbs Weir Lock Rebuilt 1922 90' 0'' 87' 0'' 16' 0'' 5' 1''  
               
Carthagena Turnpike Built 1741 ~ ~ 18' 0''   1767
Carthagena Lock Built 1767       3' 0'' 1833
Carthagena Lock Rebuilt 1827     13' 7'' 4' 11'' 1922
Carthagena Lock Rebuilt 1922 90' 0'' 87' 0'' 16' 0'' 5' 0''  
               
Kings Weir   Extant 1741 ~ ~   10' 0''  
Kings Weir Lock Built 1780         1806
Kings Weir Lock Rebuilt 1806         1833
Kings Weir (to Old River Lea) Rebuilt   ~ ~      
               
Aqueduct Lock Built 1768     13' 6'' 5' 5'' 1922
Aqueduct Lock Rebuilt 1922 90' 0'' 87' 0'' 16' 0'' 5' 6''  
               
Cheshunt Lock Built 1768     13' 5'' 5' 1'' 1922
Cheshunt Lock Rebuilt 1922 90' 0'' 87' 0'' 16' 0'' 5' 1''  
               
Walton's Weir (on Old River Lea) Extant 1741 ~ ~   8' 3''  
Sir W Wake's Weir (on Old River Lea) Built  1590 ~ ~   4' 0''  
               
Waltham Common Lock Built 1768     13' 4'' 4' 10'' 1922
Waltham Common Lock Rebuilt 1922 90' 0'' 87' 0'' 16' 0'' 4' 10''  
               
Edmonsey (Powder Mill) Lock Built 1806       2' 6'' c1975
Gunpowder Mills Lock (East) Built 1878 40' 0'' 35' 0'' 10' 3'' 6' 0'' Extant
Gunpowder Mills Lock (West) Built 1893 61' 0'' 53' 6'' 12' 4'' 6' 0'' Extant
Waltham Pound Lock Built 1576 70' 0''   22' 2'' 3' 6'' 1592
               
Waltham Town Lock Built  1768     13' 5'' 4' 3'' 1922
Waltham Town Lock (in present position) Built  1922 90' 0'' 87' 0'' 16' 0'' 4' 3''
               
Lower Island Lock (Gunpowder Mills) Built c1888       3' 9'' c1975
               
Rammey Marsh Lock Built  1768         1864
Rammey Marsh Lock (in present position) Rebuilt 1864     16' 0'' 3' 3'' 1902
Rammey Marsh Lock Rebuilt 1902 90' 0'' 87' 0'' 16' 4'' 3' 3''  
               
Newmans Weir or  Sothebys Upper Weir Extant  1725 ~ ~   9' 9''  
 
Enfield Lock Extant 1725         1768
Enfield Lock Rebuilt 1768     13' 4'' 9' 7'' 1922
Enfield Lock Rebuilt 1922 90' 0'' 87' 0'' 16' 0'' 9' 7''
               
Sotheby's Lower Weir (on Old River Lea) Extant 1725 ~ ~   8' 3'' 1770
               
Ponders End Lock Built 1770         1858
Ponders End Lock Rebuilt 1858 90' 0'' 86' 0'' 16' 0'' 7' 4''  
Ponders End Lock (West chamber) Duplicated 1959 90' 6'' 84' 0'' 18' 10'' 7' 4''  
               
Ponders End Halflock Built 1770         1852
               
Picketts Lock Built 1770         1861
Picketts Lock Rebuilt 1861     18' 0'' 5' 2'' 1902+
Picketts Lock Rebuilt 1902+ 90' 0'' 86' 0'' 18' 10'' 6' 5''  
               
Flanders Weir (On Old River Lea) Extant 1701 ~ ~   10' 6'' 1776
Bleak Hall Lock Built  1776         1863
Cooks Weir (On Old River Lea) Extant  1725 ~ ~   4' 0'' 1776
Edmonton Lower Lock Built 1776         1851
Boltons Weir Extant  1725 ~ ~   3' 9''  
               
Stonebridge Lock Built 1776         1853
Stonebridge Lock Rebuilt 1853     18' 6'' 6' 8'' 1902+
Stonebridge Lock Rebuilt 1902+ 90' 0'' 87' 0'' 18' 6'' 6' 6''  
Stonebridge Lock (East chamber) Duplicated 1961          
               
France Weir (on Old River Lea) Extant 1725 ~ ~      
Tottenham or Hilliards Turnpike (on Old River Lea) Extant 1741 ~ ~   5' 6''  
               
Tottenham Lock Built 1776         1845
Tottenham Lock Resited  1845     18' 6' 9'' 1902+
Tottenham Lock Rebuilt 1902+ 96' 0'' 90' 0'' 18' 6'' 6' 9''  
Tottenham Lock (East chamber) Duplicated 1960          
               
Hackney Waterworks Pound Lock  (Tidal) Built 1761          
Lea Bridge Lock Built 1769         1853
Pond Lane Lock Rebuilt 1865         1872
Pond Lane Flood Gates Re- use 1872     21' 0'' ~ 1931
Pond Lane Flood Gates Guillotine Built 1931 ~ ~  
~
  
               
Hackney Brick Cistern Lock Built  1769         1862
               
Old Ford Lock (Tidal) Built  1769          
Old Ford Locks (Large) (Tidal) Rebuilt and

Duplicated

 1856 96' 0''   18' 6''    
Old Ford Locks (Small) (Tidal) 1856 90' 0''   15' 9'' 10' 1'' 1902+
Old Ford Lock (Large) (Brick and stone) Report 1917     18' 3''    
Old Ford Lock (Small) (Brick and stone) Report 1917     15' 9''    
Old Ford - Large (Tidal until 2000) Rebuilt 1902+ 90' 0'' 85' 8'' 18' 6'' 10' 1''  
Old Ford - Small (Tidal until 2000) (West) Duplicated 1935 90' 0'' 85' 8'' 18' 6''  
 
               
Carpenters Road Radial Lock  (Tidal until 2009)   1933 92' 0'' 90' 0'' 20' 0'' ~  
               
City Road Lock (Tidal until 2009)   1933 95' 0'' 87' 0'' 20' 0''    
               
Marshgate Lock Built 1847         1935
               
Bow Tide Gate Recorded 1307       Tidal  
Bow Pound Lock (Tidal) Built 1847 108'   20' 0'' Tidal 1900
Bow (West) (Tidal) Rebuilt 1900 93' 6'' 87' 0'' 20' 0'' Tidal  
Bow (East) (Tidal) Duplicated 1931 93' 6'' 87' 0'' 20' 0'' Tidal  
               
Bromley Built 1770   95' 0'' 20' 0''    
               
Britannia Lock Built 1859     20' 0''    
Britannia (Conversion to Guillotine)     ~ ~      
               
Limehouse Lock Built 1768       Tidal 1865
Limehouse Lock Rebuilt 1865 89' 10'' 84' 0'' 19' 8'' Tidal 1968

 

 

 

 

This site was last updated 05/12/11