- River Ingrebourne
The River Ingrebourne, 27 miles (43.3km) in length, is a
tributary of theRiver Thames . It rises near Brentwood inEssex , whence it flows in a south-westerly direction under theM25 motorway through theLondon Borough of Havering in East London.The river passes under the motorway near Junction 28, at which point the first of its tributaries, "Weald Brook" [2.7 miles (4.3km) in length] enters; two others - "Carters Brook" and "Paynes Brook" shortly follow. After skirting south of the built-up area of
Harold Hill the route is partly non-urban: a large area of flood-plain follows before the Ingrebourne threads between the suburbs ofUpminster andHornchurch . The river from here is surrounded by public open space: with "Gaynes Parkway", the "Ingrebourne Valley Greenway" andHornchurch Country Park taking up the area until reaching Rainham. Here the river divides, the main channel becoming "Rainham Creek", where it flows into the Thames between "Hornchurch Marsh" (to the west) and "Rainham Marsh" (to the east) at "Old Man's Head". The second channel becomes the "Wennington Sewers" complex.The Ingrebourne Marshes are defined as a site of metropolitan importance because of the diversity of its wildlife and extensive areas of wetland reeds.
ee also
*
List of rivers in England External links
* [http://www.english-nature.org.uk/text_version/special/lnr/lnr_projects_details.asp?ID=149&r=London&k= Proposed English Nature Local Nature Reserve]
* [http://www.environment-agency.gov.uk/subjects/flood/floodwarning/N05?time=1076495040 Flood watch]River item line|upstream=
River Beam (north)
downstream=River Darent (south)
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