The Cornmill Stream is a minor tributary of the River Lea in the English

England

England is a country that is part of the United Kingdom. It shares land borders with Scotland to the north and Wales to the west; the Irish Sea is to the north west, the Celtic Sea to the south west, with the North Sea to the east and the English Channel to the south separating it from continental...

 county of Essex

Essex

Essex is a ceremonial and non-metropolitan county in the East region of England, and one of the home counties. It is located to the northeast of Greater London. It borders with Cambridgeshire and Suffolk to the north, Hertfordshire to the west, Kent to the South and London to the south west...

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History

The stream is an artificial watercourse which may have been built by 1086 to serve the mills mentioned in the Domesday Book

Domesday Book

Domesday Book , now held at The National Archives, Kew, Richmond upon Thames in South West London, is the record of the great survey of much of England and parts of Wales completed in 1086...

 at Waltham Abbey

Waltham Abbey (abbey)

The Abbey Church of Waltham Abbey has been a place of worship since at least 1030, and is in the town of Waltham Abbey, Essex, England. The Prime Meridian passes through its grounds. Harold Godwinson is said to be buried just outside the present abbey...

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Course

After leaving the River Lee Flood Relief Channel

River Lee Flood Relief Channel

The River Lee Flood Relief Channel 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 was fully operational by 1976...

 (Horsemill Stream) at Fishers Green

Fishers Green

Fishers Green is a locality north of Waltham Abbey, Essex on the B194 road on the section known as the Crooked Mile.- River Lee Country Park :Fishers Green is in the River Lee Country Park...

 the stream flows south to form the western boundary with the former Waltham Abbey Royal Gunpowder Mills

Waltham Abbey Royal Gunpowder Mills

The Royal Gunpowder Mills, Waltham Abbey, an Anchor Point of the European Route of Industrial Heritage, , set in of parkland and containing 21 buildings of major historical importance, mixes history, science, and attractive surroundings...

 before flowing through the Waltham Abbey SSSI

Waltham Abbey SSSI

The Waltham Abbey SSSI is a Site of Special Scientific Interest which is located within the Waltham Abbey Royal Gunpowder Mills at Waltham Abbey Essex. - History :...

 within the Gunpowder Mills property. Above Waltham Abbey the stream divulges from the Old River Lea  with both channels bordering the Cornmill Stream and Old River Lea

Cornmill Stream and Old River Lea

The Cornmill Stream and Old River Lea is a Site of Special Scientific Interest which is located within the River Lee Country Park at Waltham Abbey Essex.- Location :...

, SSSI. The stream passes under the 14th century Harold's Bridge and the B194 road

B roads in Zone 1 of the Great Britain numbering scheme

B roads are numbered routes in Great Britain of lesser importance than A roads. See the article Great Britain road numbering scheme for the rationale behind the numbers allocated.-Zone 1 :-Zone 1 :...

(Abbey View) before flowing through a sluice in the abbey's grounds. The stream flows underground to emerge adjacent to Waltham Abbey town hall. Flowing through an urban area to rejoin the River Lee Flood Relief Channel below the town of Waltham Abbey.