The Colne Brook is a river in England that branches off the River Colne

River Colne, Hertfordshire

The Colne is a river in England which is a tributary of the River Thames. It flows mainly through Hertfordshire and forms the boundary between the South Bucks district of Buckinghamshire and the London Borough of Hillingdon...

 at Uxbridge Moor and flows into the River Thames

River Thames

The River Thames flows through southern England. It is the longest river entirely in England and the second longest in the United Kingdom. While it is best known because its lower reaches flow through central London, the river flows alongside several other towns and cities, including Oxford,...

 at Hythe End

Hythe End

Hythe End is a place in Berkshire between Wraysbury and Staines, England on the northern bank of the River Thames close to Bell Weir Lock.Hythe End consists of several riverside homes, mainly on The Island, Hythe End. There are gravel pits to the north which make up a Site of Special Scientific...

, just below Bell Weir Lock

Bell Weir Lock

Bell Weir Lock is a lock on the River Thames in England situated on the Surrey bank near Egham. It is just upstream of the M25 Runnymede Bridge which carries the M25 and A30 road across the river...

.

The river leaves the River Colne at Uxbridge

Uxbridge

Uxbridge is a large town located in north west London, England and is the administrative headquarters of the London Borough of Hillingdon. It forms part of the ceremonial county of Greater London. It is located west-northwest of Charing Cross and is one of the major metropolitan centres...

 Moor and flows close by it until West Drayton

West Drayton

West Drayton is a suburban area in the London Borough of Hillingdon in the far west of London, England. Formerly part of the Yiewsley and West Drayton Urban District of Middlesex, the district became part of Greater London in 1965....

. It then passes under the M25 motorway

M25 motorway

The M25 motorway, or London Orbital, is a orbital motorway that almost encircles Greater London, England, in the United Kingdom. The motorway was first mooted early in the 20th century. A few sections, based on the now abandoned London Ringways plan, were constructed in the early 1970s and it ...

 at the M4 motorway

M4 motorway

The M4 motorway links London with South Wales. It is part of the unsigned European route E30. Other major places directly accessible from M4 junctions are Reading, Swindon, Bristol, Newport, Cardiff and Swansea...

 interchange and flows through the village of Colnbrook

Colnbrook

Colnbrook is a large village in the unitary authority of Slough, in Berkshire, England. It is situated southeast of central Slough, east of Windsor and west of central London....

. South of Colnbrook it receives another feed from the River Colne by the Poyle Channel and runs between Horton

Horton, Berkshire

Horton is a village and civil parish in Berkshire, England. It is located between Windsor and Staines. Horton was transferred from Buckinghamshire to Berkshire in 1974. Through the Horton parish flows the Colne Brook which runs to the River Thames from the River Colne.The village name is a common...

 and Wraysbury Reservoir

Wraysbury Reservoir

The Wraysbury Reservoir is a water supply reservoir for London lying just west of the M25 near the village of Wraysbury and Heathrow airport. The reservoir was begun in 1967 and completed in 1970 with a capacity of 34,000 million litres....

. Its course then goes close to the gravel pits at Wraysbury

Wraysbury

Wraysbury, traditionally spelt Wyrardisbury, is a village and civil parish in Berkshire, England. It is located in the very east of the county, in the part that was in Buckinghamshire until 1974...

 which make up a Site of Special Scientific Interest

Site of Special Scientific Interest

A Site of Special Scientific Interest is a conservation designation denoting a protected area in the United Kingdom. SSSIs are the basic building block of site-based nature conservation legislation and most other legal nature/geological conservation designations in Great Britain are based upon...

, before running into the River Thames between the M25 Runnymede Bridge

M25 Runnymede Bridge

The M25 Runnymede Bridge is a motorway bridge built in the 1980s, carrying the M25 motorway across the River Thames. It carries the M25 North/South just south of Heathrow Airport and crosses the Thames on the reach above Penton Hook Lock and shortly before Bell Weir Lock.The bridge was built to...

 and Bell Weir Lock

Bell Weir Lock

Bell Weir Lock is a lock on the River Thames in England situated on the Surrey bank near Egham. It is just upstream of the M25 Runnymede Bridge which carries the M25 and A30 road across the river...

.

See also

• Tributaries of the River Thames
  Tributaries of the River Thames
  This article lists the tributaries of the River Thames, in England. It also includes significant backwaters and waterways which also have confluences with the main stream of the River Thames.Most of the tributaries are natural, but a few were man-made...
  
  
• List of rivers in England