Wraysbury River
Wraysbury River is a small river at the western edge of Middlesex which branches off the River Colne at West Drayton and rejoins it at Staines before it flows into the River Thames.
The river leaves the River Colne at West Drayton and runs under the M4 motorway until close to Longford when it passes under the M25 motorway. A branch then takes much of the water off westwards down the Poyle Channel to feed the Colne Brook (which by then has become the border between Middlesex and Buckinghamshire for a few miles), while the Wraysbury River runs along the M25, crossing back under it along the eastern side of the Wraysbury Reservoir.
South of the Reservoir, the Wraybury River flows into Staines and rejoins the River Colne in the town centre, shortly before it flows into the River Thames.