The River Lea is in South East England. It originates in Bedfordshire, in the Chiltern Hills, and flows southeast through Hertfordshire, along the Essex border and into Greater London, to meet the River Thames at Bow Creek. It is one of the largest rivers in London and the easternmost major tributary of 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 (11.3 km) northeast of Charing Cross.
Bow Creek is a 2.25-mile (3.6 km) long tidal estuary of the English River Lea and is part of the Bow Back Rivers. Below Bow Locks the creek forms the boundary between the London Boroughs of Newham and Tower Hamlets, in East London.
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.
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.
Brimsdown is a neighbourhood of eastern Enfield in the London Borough of Enfield, north London, on the west side of the mid-to-lower Lea Valley.
Ponders End is the southeasternmost part of Enfield, north London, centred on the Hertford Road. Situated to the west of the River Lee Navigation, it became industrialised through the 19th century, similar to the Lea Valley in neighbouring Edmonton and Brimsdown, with manufacturing giving way to warehousing in the late-20th century. The area consists heavily of social housing, with streets also lined with 19th and early-20th century suburban terraced housing.
This article contains a complete list of locks and weirs on the River Lea/River Lee Navigation from Hertford downstream.
The Pymmes Brook Trail is located in the London Boroughs of Barnet, Enfield and Haringey and is just under 13 miles (21 km) long. The brook is named after William Pymme, a local landowner.
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.
The River Lee Diversion is located in the Lea Valley, close to Enfield Lock and to the north east corner of the King George V Reservoir.
The Tottenham Marshes are located at Tottenham in the London Borough of Haringey. The marshes cover over 100 acres (0.40 km2) and became part of the Lee Valley Park in 1972. The marsh is made up of three main areas: Clendish Marsh, Wild Marsh West and Wild Marsh East. The latter two are separated by the River Lea.
Pickett's Lock is a lock on the River Lee Navigation in the London Borough of Enfield, England and is located near Edmonton, London. It gives its name to the surrounding area of Picketts Lock. In common with other locks as far upstream as Ponder's End Lock it is large enough to take barges of up to 130 tons. However it has not been upgraded to power operation and so it must be manually operated. It has gate paddles but these do not have gate baffles to mitigate the rush of water into the lock.
Tottenham Lock (No17) is a paired lock on the River Lee Navigation in the London Borough of Haringey, England and is located near Tottenham, London. Like other locks as far as Ponders End it is large enough to take barges of up to 130 tons. The primary lock has been upgraded to mechanical operation, but the secondary west lock is operated manually.
Ponders End Lock is a paired lock on the River Lee Navigation in England and is located near Ponders End, London. It is the last lock upstream that is large enough to take barges of up to 130 tons.
Rammey Marsh Lock is a lock on the River Lee Navigation at Enfield, London, England. The area adjacent to the lock is known as Rammey Marsh and close to the River Lee Flood Relief Channel.
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.
