River Lea at Hertford Basin
|• location||Leagrave, Luton|
|• elevation||115 m (377 ft)|
|Bow Creek, River Thames|
|0 m (0 ft)|
|Length||68 km (42 mi)|
|• location||Luton Hoo, Luton|
|• average||1.8 m3/s (64 cu ft/s)|
|• location|| Feildes Weir |
|• average||4.3 m3/s (150 cu ft/s)|
|Official name||Lee Valley|
|Designated||9 October 2000|
|Upper River Lea/Lee|
The River Lea, also spelt Lee, is a river in South East England. It originates in the Bedfordshire part of the Chiltern Hills, and flows southeast through Hertfordshire and then Greater London, sometimes through several channels, to ultimately meet the River Thames, the last looping section being known as Bow Creek. It is one of the largest rivers in London and the easternmost major tributary of the Thames. Its valley creates a long chain of marshy ground along its lower length, much of which has been used for gravel and mineral extraction, reservoirs and industry. Below Hertford the river has since medieval times had alterations made to make it gradually navigable for boats between the Thames and eastern Hertfordshire and Essex, known as the Lee Navigation. This stimulated much industry along its banks. The navigable River Stort, a main tributary, joins it at Hoddesdon.
While the lower Lea remains somewhat polluted, its upper stretch and tributaries, classified as chalk streams, are a major source of drinking water for London. An artificial waterway known as the New River, opened in 1613, abstracts clean water away from the upper stretch of the river near Hertford for drinking,and lower parts of the river are also abstracted from. The Lea's origin in the Chilterns contributes to the extreme hardness (high mineral content) of London tap water.
The name of the River Lea was first recorded in the 9th century, although is believed to be much older. Spellings from the Anglo-Saxon period include Lig(e)an in 880 and Lygan in 895, and in the early medieval period it is usually Luye or Leye. It seems to be derived from a Celtic (brythonic) root lug-meaning 'bright or light' which is also the derivation of a name for a deity, so the meaning may be 'bright river' or 'river dedicated to the god Lugus'.A simpler derivation may well be the Brythonic word cognate with the modern Welsh "Li" pronounced "Lea" which means a flow or a current.
The spelling Lea predominates west (upstream) of Hertford, but both spellings (Lea and Lee) are used from Hertford to the River Thames. The Lee Navigation was established by Acts of Parliament and only that spelling is used in this context. The Lee Valley Regional Park Authority also uses this spelling for leisure facilities. However, the spelling Lea is used for road names, locations and other infrastructure in the capital, such as Leamouth, Lea Bridge, the Lea Valley Walk and the Lea Valley Railway Lines. This spelling is also used in geology, archaeology, etc. to refer to the Lea Valley. The divergent spellings of the river are also reflected in place-names, including Leagrave, the suburb of Luton where the source of the river is located, and of Luton and Leyton: both mean "farmstead on the River Lea".
The source is usually said to be at Well Head inside Waulud's Bank at Leagrave, but there the River Lea is also fed by Houghton Brook, a stream that starts 2 miles (3.2 km) further west in Houghton Regis. The river flows through (or by) Luton, Harpenden, Wheathampstead, Welwyn Garden City, to Hertford where it changes from a small shallow river to a deep canal at Hertford Castle Weir, which then flows on to Ware, Stanstead Abbotts, Hoddesdon, Broxbourne, Cheshunt, Waltham Abbey, Enfield Lock, Ponders End, Edmonton, Chingford, Tottenham, Walthamstow, Upper Clapton, Leyton, Hackney Wick, Stratford, Bromley-by-Bow (past Fish Island), Poplar, Canning Town and finally Leamouth where (as Bow Creek) it meets the River Thames. It forms the traditional boundary between the counties of Middlesex and Essex, and was used for part of the Danelaw boundary. It also forms part of the boundary between Essex and Hertfordshire.
The River Stort is an important tributary of the Lea. It is itself navigable until Bishop's Stortford. It joins the Lea at Feildes Weir, Hoddesdon where boats may access it from the main river via a lock.
For much of its distance the river runs within or as a boundary to the Lee Valley Park. Between Tottenham and Hackney the Lea feeds Tottenham Marshes, Walthamstow Marshes and Hackney Marshes (the latter now drained). In their early days, Tottenham Hotspur and Leyton Orient played their matches as football amateurs on the Marshes. South of Hackney Wick the river's course is split, running almost completely in man made channels (originally created to power water mills, the Bow Back Rivers) flowing through an area that was once a thriving industrial zone.
Inside Greater London below Enfield Lock the river forms the boundary with the former Royal Small Arms Factory, now known as Enfield Island Village, a housing development. Just downstream the river is joined by the River Lee Flood Relief Channel. The man-made, concrete-banked watercourse is known as the River Lee Diversion at this point as it passes to the east of a pair of reservoirs: the King George V Reservoir at Ponders End/Chingford and William Girling Reservoir at Edmonton known collectively as the Chingford Reservoirs; and to the west of the Banbury Reservoir at Walthamstow. At Tottenham Hale there is a connected set of reservoirs; Lockwood Reservoir, High Maynard Reservoir, Low Maynard Reservoir, Walthamstow Reservoirs, East Warwick Reservoir and West Warwick Reservoir. It also passes the Three Mills, a restored tidal mill near Bow.
In the Roman era, Old Ford, as the name suggests, was the ancient, most downstream, crossing point of the River Lea. This was part of a pre-Roman route that followed the modern Oxford Street, Old Street, through Bethnal Green to Old Ford and thence across a causeway through the marshes, known as Wanstead Slip (now in Leyton). The route then continued through Essex to Colchester. At this time, the Lea was a wider river, and the tidal estuary stretched as far as Hackney Wick.Evidence of a late Roman settlement at Old Ford, dating from the 4th and 5th centuries, has been found.
Somewhere between 878 and 890 the Treaty of Alfred and Guthrum was drawn up that amongst other things used the course of the Lea to define the border between the Danes and the English. In 894, a force of Danes sailed up the river to Hertford, 20 miles (32.2 km) north of London. Alfred the Great saw an opportunity to defeat the Danes and dug a new channel to lower the level of the river, leaving the Danes stranded.and in about 895 they built a fortified camp, in the higher reaches of the Lea, about
In 1110, Matilda, wife of Henry I, reputedly took a tumble at the ford, on her way to Barking Abbey and ordered a distinctively bow-shaped, three-arched, bridge to be built over the River Lea (The like of which had not been seen before), at Bow. During the Middle Ages, Temple Mills, Abbey Mills, Old Ford and Bow were the sites of water mills (mainly in ecclesiastic ownership) that supplied flour to the bakers of Stratforde-atte-Bow, and hence bread to the City. It was the channels created for these mills that caused the Bow Back Rivers to be cut through the former Roman stone causeway at Stratford (from which the name is derived).
Improvements were made to the river from 1424, with tolls being levied to compensate the landowners, and in 1571, there were riots after the extension of the River was promoted in a private bill presented to the House of Commons. By 1577, the first lock was established at Waltham Abbey and the river began to be actively managed for navigation.
The New River was constructed in 1613 to take clean water to London, from the Lea and its catchment areas in Hertfordshire and bypass the polluting industries that had developed in the Lea's downstream reaches.The artificial channel further reduced the flow to the natural river and by 1767 locks were installed below Hertford Castle Weir on the canalised part of the Lea, now the Lee Navigation with further locks and canalisation taking place during the succeeding centuries. In 1766, work also began on the Limehouse Cut to connect the river, at Bromley-by-Bow, with the Thames at Limehouse Basin.
The River Lea flows through the old brewing and malting centre of Ware, and consequently transport by water was for many years a significant industry based there. Barley was transported into Ware, and malt out via the river, in particular to London. Bargemen born in Ware were given the "freedom of the River Thames" — avoiding the requirement of paying lock dues — as a result of their transport of fresh water and food to London during The Great Plague of 1665–66. A local legend says that dead bodies were brought out of London at that time via the river for burying in Ware, but there is no evidence for this.
The Waterworks River, a part of the tidal Bow Back Rivers, has been widened by 8 metres (26 ft) and canalised to assist with construction of the Olympic Park for the 2012 Summer Olympics. In 2009, Three Mills Lock was installed on the Prescott Channel to maintain water levels on the Lea, within the park at a depth of 2 metres (7 ft). This allowed access by 350–tonnes barges to ensure that at least 50% of the material required for construction could be delivered, or removed, by water. (These figures are under review. It is stipulated that the governing body has re appraised these figures).
The river contains fish and other wildlife such as the occasional seal but these are threatened by pollution such as runoff.
Some boat trippers reported observing on 5 August 2005 a Canada goose being pulled underwater very quickly. The London Wildlife Trust suggested that this was most likely caused by a pike.
In 2011, Mike Wells claimed that he saw a "goose go vertically down" in the river. Again a pike or mink was suggested as most likely.Vice Magazine suggested that Wells' story may have been invented to publicise authorities' attempts to evict houseboats from the area that year, in advance of the 2012 Olympic Games.
The poem A Tale of Two Swannes is set along the River Lee. It was written by William Vallans and published in 1590.
The old course of the river is the one featured in the early chapters of the classic fishing book The Compleat Angler by Izaak Walton. The author begins at Tottenham and proceeds upriver from there.
A guide to walking along the river valley was written by Leigh Hatts,and an account of a walk along the complete length of the river in 2009 was published as a blog by "Diamond Geezer".
In 2014, German writer Esther Kinsky published a novel, Am Fluß, now available in English as River, translated by Iain Galbraithbased around her walks along the River Lea beginning at Horseshoe Point and ending at the river's mouth where it joins the Thames.
The Lee Navigation is a canalised river incorporating the River Lea. It flows from Hertford Castle Weir to the River Thames at Bow Creek; its first lock is Hertford Lock and its last Bow Locks.
Lea Bridge is a district in the London Borough of Hackney and the London Borough of Waltham Forest in London, England. It lies 7 miles northeast of Charing Cross.
Bow Back Rivers or Stratford Back Rivers is a complex of waterways between Bow and Stratford in east London, England, which connect the River Lea to the River Thames. Starting in the twelfth century, works were carried out to drain Stratford Marshes and several of the waterways were constructed to power watermills. Bow Creek provided the final outfall to the Thames, and the other channels were called Abbey Creek, Channelsea River, City Mill River, Prescott Channel, Pudding Mill River, Saint Thomas Creek, Three Mills Back River, Three Mills Wall River and Waterworks River.
The Lower Lea Valley is the southern end of the Lea Valley which surrounds the River Lea. It is part of the Thames Gateway redevelopment area and was the location of the 2012 Summer Olympics.
London is the largest urban area and capital city of the United Kingdom. It is located in the southeast of Great Britain. The London region covers an area of 1,579 square kilometres (610 sq mi), and had a population of 7,172,036 in 2001 and a population density of 4,542 people per square kilometre. A larger area, referred to as the London Metropolitan Region or the London Metropolitan Agglomeration covers an area of 8,382 square kilometres (3,236 sq mi), and had a population of 12,653,500 and a population density of 1,510 people per square kilometre.
Lee Valley Regional Park is a 10,000-acre (40 km2) 26 miles (42 km) long linear park, much of it green spaces, running through the northeast of Greater London, Essex and Hertfordshire from the River Thames to Ware, through areas such as Stratford, Clapton, Tottenham, Enfield, Walthamstow, Cheshunt, Broxbourne and Hoddesdon in an area generally known as the Lea Valley. Greater London's largest park, Lee Valley Park is more than four times the size of Richmond Park, extending beyond Greater London's borders into the neighbouring counties of Hertfordshire and Essex.
The Lea Valley lines are two commuter lines and two branches in north-east London, so named because they run along the Lower Lea Valley of the River Lea. They were part of the Great Eastern Railway, now part of the Anglia Route of Network Rail.
Broxbourne railway station is on the West Anglia Main Line serving the towns of Broxbourne and Hoddesdon in Hertfordshire, England. It is 17 miles 17 chains (27.7 km) down the line from London Liverpool Street and is situated between Cheshunt and Roydon. Its three-letter station code is BXB and it is in fare zone B.
Enfield Lock is an area in the London Borough of Enfield, north London. It is approximately located east of the Hertford Road between Turkey Street and the Holmesdale Tunnel overpass, and extends to the River Lee Navigation, including the Enfield Island Village. The locality gains its name from the lock on the River Lee Navigation. Today's Enfield Lock was rebuilt in 1922. The area forms part of the Lee Valley Park and the Enfield Lock Conservation Area. On its eastern boundary Enfield Lock has marshland formerly used as a testing site between the Royal Small Arms Factory and the Gunpowder Mills, beyond this is the village of Sewardstone and the Epping forest boundary. To the south is Brimsdown, the north Waltham Cross and to the west Bullsmoor and Freezywater. Enfield Lock forms part of the London boundary.
The Lea Valley, the valley of the River Lea, has been used as a transport corridor, a source of sand and gravel, an industrial area, a water supply for London, and a recreational area. The London 2012 Summer Olympics were based in Stratford, in the Lower Lea Valley. It is very important for London's water supply, as the source of the water transported by the New River aqueduct, but also as the location for the Lee Valley Reservoir Chain, stretching from Enfield through Tottenham and Walthamstow.
Dobbs Weir is both a weir near Hoddesdon, Hertfordshire and an area of Roydon, Essex in England on the River Lea. It is well known for angling, outdoor beauty and watersports. It is overlooked by the Fish and Eels pub.
This article contains a complete list of locks and weirs on the River Lea/River Lee Navigation from Hertford downstream.
Hertford Castle Weir is a weir located in Hertford near to Hertford Castle and next to Hertford Theatre.
The Lea Valley Walk is a 50-mile (80 km) long-distance path located between Leagrave, the source of the River Lea near Luton, and the Thames, at Limehouse Basin, Limehouse, east London. From its source much of the walk is rural. At Hertford the path follows the towpath of the River Lee Navigation, and it becomes increasingly urbanised as it approaches London. The walk was opened in 1993 and is waymarked throughout using a swan logo.
The Lee Flood Relief Channel (FRC) is located in the Lea Valley and flows between Ware, Hertfordshire, and Stratford, east London. Work started on the channel in 1947 following major flooding and it was fully operational by 1976. The channel incorporates existing watercourses, lakes, and new channels. Water from the channel feeds the Lee Valley Reservoir Chain.
Pond Lane Flood Gates is a redundant flood defence structure, located near Lea Bridge Road on the River Lee Navigation in the London Borough of Hackney, England.
The Hackney Cut is an artificial channel of the Lee Navigation built in England in 1769 by the River Lea Trustees to straighten and improve the Navigation. It begins at the Middlesex Filter Beds Weir, below Lea Bridge, and is situated in the (modern) London Borough of Hackney. When built it contained two pound locks and a half-lock, but was rebuilt to handle larger barges in the 1850s, and now only Old Ford Lock, which is actually a duplicated pair, remains.
The Old River Lea is the former natural channel of the River Lea below Lea Bridge, in the London Borough of Hackney. The Old River forms a large meander from the Middlesex Filter Beds Weir to rejoin the main channel of the River Lee Navigation below Old Ford Lock, just west of the 2012 Olympic stadium.
The New River Path is a long-distance footpath which follows the course of the 17th-century aqueduct, the New River, for 28 miles (45 km) from its source in Hertfordshire to its original end in Islington, London. The path is waymarked and all signs display the words "New River Path" on a green background.
The River Lynch, also known as the Lynch Brook, is a minor tributary of the River Lea in Hoddesdon, Hertfordshire, England.
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|Next confluence upstream||River Thames||Next confluence downstream|
|River Ravensbourne (south)||River Lea||River Roding (north)|