The Middlesex Filter Beds Weir, or Lea Bridge Road Weir, marks the start of the Hackney Cut, an artificial channel of the River Lee Navigation built in 1770, in the

London Borough of Hackney London is the capital and List of urban areas in the United Kingdom, largest city of England and the United Kingdom, with a population of just under 9 million. It stands on the River Thames in south-east England at the head of a estuary dow ...

. The weir lies between the former Middlesex Filter Beds – now a nature reserve – and the Thames Water treatment works at

Lea Bridge 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. The area it takes its name from a bridge built over the River ...

Road. Excess water from the Navigation passes over the weir into the former natural channel of the River Lee that passes in a large loop to the east of the modern water course, as the Old River Lea. The natural water course travels and rejoins the Navigation below Old Ford Lock.

External links

Middlesex Filter Beds on the Official Lee Valley website
Weirs on the River Lea Buildings and structures in the London Borough of Hackney Geography of the London Borough of Hackney {{London-struct-stub