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39-493: Yeading Brook is the dominant source of the River Crane , in outer North West then West London. The western branch flows 25.8 km (16.0 mi) south. It rises in the far south of suburban Pinner and drains all of the western suburbs of Harrow , insofar as they have not been by historical practice connected into sewers. Rapidly the brook coalesces at sports grounds associated with and including Headstone Manor , where there

78-515: A 'pollution incident' at the River Crane in which appeared to have killed many fish. The agency was called into action following several reports from members of the public that a section of the river at Twickenham had turned black and fish were seen in distress. The source of the pollution has been traced to an outfall pipe upstream of the A30 , and EA officers are at the scene working with partners to minimise

117-582: A few centimetres. To the east of this it shows the definitive reaches of the Crane. From 29 to 31 October 2011, about one day of the Heathrow zone's raw sewage was, due to a valve jam, diverted into the Crane. A two-metre inter-pipe valve jammed shut on Saturday morning at Cranford Bridge on the A4 Bath Road while Thames Water engineers carried out routine maintenance. Unable to force it back open, they arranged for

156-527: Is a surviving medieval moat, and leaving the far west of Harrow it makes a large curve to adjoin southern parts of Ruislip then Ickenham Marsh nature reserve, before finishing the more than three-mile sharp curve on the south side of Northolt Aerodrome 1 mile (1.6 km) southwest of South Ruislip railway station . At this point the Yeading Brook's eastern branch feeds in as others have already from South Harrow . The brook bisects Yeading and then forms

195-735: Is solely devoted to the scheme's construction and mitigations, comprising 78 sections and three schedules. Its work 1 is this works, works 2 to 5 are main sewers rising in Hendon, Uxbridge, Harrow and Staines. The Teddington main also connects, as fed into the new sewer 5d from works of Twickenham Corporation. The sewerage district (catchment) was defined as those districts named after: Brentford & Chiswick, Ealing, Feltham, Harrow, Hayes & Harlington, Hendon (both), Heston & Isleworth, Kingsbury, Ruislip-Northwood, Southall-Norwood, Staines, Sunbury-on-Thames, Teddington, Uxbridge, Wealdstone, Wembley, Yiewsley & West Drayton. The second schedule lists

234-490: Is the relevant 'Catchment Based Approach' (CaBA) catchment partnership. It strategises and co-ordinates efforts to manage and improve the Crane and its tributaries, including enhancing biodiversity, water quality and quantity, connectivity, public access, community cohesion, and historical and educational opportunities. It stemmed from the West London Biodiversity Practitioners Group, derived from

273-636: Is the site of the Hounslow Powder Mills which were built in the 16th century and continued to make gunpowder until 1927. The mills have disappeared, but the Shot Tower still stands nearby. The large millpool on an island above the mills is now a Local Nature Reserve , Crane Park Island . A distributary splits off (forming a second section of the Duke's River) at Kneller Gardens. The Crane itself flows north east through central Twickenham and then north through

312-561: The Duke of Northumberland's River was straightened out as a source of coolant. The plant began operations in late 1935 and was formally opened with the rest of the scheme on 23 October 1936 by the then Minister of Health , Sir Kingsley Wood . In its first year of operation it treated an average of 60,020,000 gallons of sewage per day. From 1935 the treatment facilities at Mogden comprised storm water tanks, primary sedimentation, sewage aeration, final separation and sludge digestion. The plant

351-585: The Mogden formula , used to estimate the cost of wastewater treatment. The Mogden works discharges effluent at Isleworth Ait , on the Tideway which is the western half of the Thames Estuary , centred on London's centre. Between 1956 and the completion of an expansion in 1962, some of this had not received secondary treatment. Also during heavy rain, the plant was sometimes overwhelmed and released untreated sewage into

390-481: The methane generated by sewage treatment to generate electricity and heat from the processing to heat the sludge. It was originally equipped with oil and spark-ignition gas engines; a heat and power plant was added in 1993. In 1974 the works were selling surplus methane for £12,000 a year (equivalent to £160,000 in 2023); the latest upgrade enables them to meet 40% of their energy requirements from methane. Initially, after approximately 25 days at Mogden, sludge

429-566: The 2011 incident. More recently CVP's staffing/administration costs have been met by annual contributions from a number of the partner organisations including Thames Water. In 2021 the hosting/chairing service was taken on by the Crane Valley Community Interest Company (CVCIC), specifically set up for this purpose. 51°27′55″N 0°19′20″W  /  51.46528°N 0.32222°W  / 51.46528; -0.32222 Mogden Sewage Treatment Works It treats

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468-648: The Cole Park area. The river is tidal in the final stretch between Cole Park Island and the confluence with the Thames. The Lower Duke's River is tidal for the short distance below the weir by the bridge in Church Street, Isleworth, to its confluence with the Thames. Upstream in Isleworth it has been diverted to flow through Mogden Sewage Treatment Works , where it provides coolant for the power station. Treated sewage effluent from

507-742: The Hillingdon Trail), Gutteridge Wood and Meadows , Ten Acre Wood , Yeading Brook Meadows , where it augments the Grand Union canal walk and Minet Country Park , which has two very minor tributaries and their sources. River Crane, London The River Crane , a tributary of the River Thames , runs 8.5 miles (13.6 km) in West London, England. It forms the lower course of Yeading Brook . It adjoins or passes through three London boroughs : Hillingdon , Hounslow and Richmond upon Thames , in

546-776: The Lower DNR's Mill Plat, and thus is supplied by virtue of the Crane from the Colne and the Yeading Brook . The latter means the river system has sources in the London Boroughs of Harrow and Ealing [in Southall as an overflow offtake from the Paddington Arm of the Grand Union Canal ]. The Crane has always been so marked in maps of Cranford , rather than as the Yeading Brook. Here

585-594: The Protection of Birds (RSPB). The main objective of the Group was to encourage local conservation work. The Group reconvened the next February and July. The partnership then evolved to become the River Crane Management Forum (RCMF), which had its first meeting the next June. Members present were: These agreed an aspiration for action along the Crane to improve water quality and biodiversity, as well as promoting

624-526: The West Middlesex (Mogden-Perry Oaks) Main Drainage Scheme, which had a total estimated cost of £5.25 million (equivalent to £381,000,000 in 2023). The council enlarged the sewage operation at Mogden Farm, buying 101 acres (41 ha) of it, after the public and Duke of Northumberland objected to a Syon Park proposal. 110 kilometres (68 mi) of sewers were built to connect to it, and

663-479: The backed-up sewage to be taken away in tanker lorries for treatment. The volume of sewage meant tanker removal could not keep pace. Faced with a choice between letting the excess sewage back up into basements of Bath Road hotels and various airport roads or spill to the Crane, the much cheaper option prevailed, resulting in discharge until 3   am on Monday and damaged wildlife. This killed 3,000 fish. The Environment Agency ("EA") has launched an investigation into

702-400: The compulsory purchases by plan reference. The third schedule sets the minimum standard of purity of 30 ppm of suspended solids in treated effluent and secondly to "not take up more than" 20 ppm of dissolved oxygen in five days at 65 °F (18 °C). The plant was built in 1931–36 for £ 1.7 million by Middlesex County Council, replacing 28 small sewage treatment facilities as part of

741-430: The east end of North Hyde Road in the far south-east of Hayes has a bridge which is on the boundary between the two districts (and the traditional parishes), from where its course is nearly semi-circular to the south then east, joining the tidal Thames at the boundary of St Margarets and Isleworth , just to the south of Isleworth Ait . Passing through Cranford , the river crosses Cranford Countryside Park, skirts

780-457: The eastern side of Heathrow Airport's car parks (formerly the Cranford Heath part of Hounslow Heath) and North Feltham , the latter split from Hounslow West on the other bank by most of what is left of Hounslow Heath ; here the (Upper) Duke of Northumberland's River joins the Crane. From this point, the Crane turns gradually east and passes through Crane Park , Twickenham. In Crane Park

819-515: The effluent channel to increase the dissolved oxygen levels in the effluent. This would only operate during very dry weather to ensure that when flows in the river Thames are low oxygen levels in the Upper Thames Tideway are kept high enough to encourage salmonid migrations and ensure a healthy aquatic ecosystem. This will be the first such effluent aeration plant in the UK. Mogden is the namesake of

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858-570: The historic county of Middlesex . The drainage basin is heavily urbanised but many of the Hayes to Whitton flood-meadows have been conserved, forming a narrow, green vale, opening out to what remains of Hounslow Heath in the centre – a near-continuous belt of semi-natural habitat. At the start of the twentieth century, several small sewage works discharged to the river. However, these have been consolidated with others into one ( Mogden Sewage Treatment Works ) which discharges directly to

897-619: The impact of the incident. Three days later, a temporary coffer dam of sandbags spanned the river, just north of the Piccadilly Line bridge. A bulk road tanker with flexible hoses extracted polluted water above this. The Crane Valley Partnership later noted that the EA traced the source to a fractured main (probably caused by illegal ground works) of sewage sludge between the Mogden works and Iver ; escaping sludge drained away via legitimate surface water drains. The Crane Valley Partnership (CVP)

936-489: The long Southall- Hayes boundary exactly, traditionally. In its final reach it is directly west of the generally naturally elevated A312 "The Parkway" and of a notable point of a canal, the network of which is unlinked, due to overshoot by a canal aqueduct. This is Bull's Bridge (canal) junction of the Grand Union Canal and its Paddington Arm . The river becomes the Crane at the bridge of North Hyde Road, which marks

975-500: The partnerships of the Hounslow Local Biodiversity Action Plan. The Group held its first meeting on 13 November 2002, at Heathrow's "Mayfield Farm" classroom. The original members included: teams from the London Boroughs of Hounslow and Hillingdon, Groundwork Thames Valley, Syon Park Estate, Thames Water, Heathrow Airport Ltd, Glendale/British Airways, English Nature, London Wildlife Trust (LWT), Royal Society for

1014-522: The plant's size by 19.5 hectares (48 acres), as part of the Thames Tideway Scheme to improve water quality in the River Thames . It was completed in summer 2013. When built, the Mogden works were very modern, one of the first large-scale applications of the activated sludge technique for sewage treatment. The plant was also advanced in having a central control board for measurements and in using

1053-516: The river; in summer 2011, 200,000  tonnes of untreated sewage from Mogden contributed to a large fish kill. Nearby residents have also complained about odour: the Borough of Hounslow served an odour abatement notice on Thames Water in 2001, and in 2011 complainants won a court judgement that the company had failed since 1990 to adequately manage odour and thereby violated human rights; £19,000 in damages to ten people were assessed. In January 2022

1092-581: The significance of the river corridor as part of the West London Green Chain. The Forum had another meeting on 20 July 2005, when the CVP was established. Up until 2021, its meetings were customarily hosted and chaired by an educational charity: In April 2013, the Partnership appointed a Development Manager employed through this charity, initially utilising a sum of £400,000 provided by Thames Water following

1131-443: The south and southeast of Isleworth , which in latter decades worked calico cloth as well as grain. The Lower DNR also waters the grand fish pond inherited from Syon Abbey, which gave way in the dissolution of the monasteries to Syon House and Syon Park . The semi-private park, with its scenic tea room, garden centre and hotel, has a nature reserve zone alongside the Thames. Its lake is still refreshed via sluice and culvert from

1170-459: The stormtanks are overflowing and discharging into the effluent channel. The peroxide prevents low oxygen conditions developing in the tidal sections of the river that receive the flows. During dry weather with low flows the effluent from Mogden can constitute the main part of the flow in the river. There is also an effluent oxygenation plant under construction, due to be commissioned 2020. This consists of an array of aerators that can be lowered into

1209-519: The straight northern boundary of the dominant manor and former medieval parish (and still of the Church of England ecclesiastical parish) of Cranford . It is 16 miles (26 km) long and walkable along most of its length. It passes through or skirts eight green spaces, a mixture of parks, nature reserves and small open spaces. These comprise Yeading Brook open space, North Harrow, Roxbourne Park , Ruislip Gardens open space, Ickenham Marsh (where it joins

Yeading Brook - Misplaced Pages Continue

1248-484: The traditional border between Hayes and Southall , being superseded by the unlinked Paddington Arm a few metres to the east. The Crane has no authoritative source of its own and so the Yeading Brook – about double the length – forms the upper part of the Crane's river system. Yeading Brook rises The west arm thus sweeps the Brook's main curve, from which many tiny meanders have been lost through North Harrow,

1287-440: The upper estuary of the Thames (the Tideway ). The Crane's form has been greatly altered by river engineering works: over centuries the watercourse has been subject to widening, narrowing, straightening, dredging and bank reinforcement. The greatest of such works has been the two-phase construction of the Duke of Northumberland's River (DNR), a tributary and distributary, to guarantee water power to mills, now demolished, across

1326-691: The waste water from about 1.9 million people served by three main sewers serving more than the northwest quarter of Outer London and two further main sewers from the south and south-west. The plant has been extended and is constantly being upgraded with new process, most recently in OfWat Amp6 by the Costain Atkins Joint venture who delivered 6MW of Combined Heat and Power (CHP) generation, New process air blowers for Batteries A & B and six gravity sludge thickening streams. The site covers 55 hectares (140 acres). The Middlesex County Council Act 1931

1365-486: The watercourse via a bridge. Its name is interwoven with Cranford and may be from crane (bird)s . The inset map shows in highlighted blue the quite steady slope used for General Roy's baseline, used for the Anglo-French Survey (1784–1790) , starting the first exact co-ordinating of two premier European observatories. It supposedly had about a millimetre of error per kilometre, by the mid-19th century shown to be

1404-527: The west of Rayners Lane i.e. east Ruislip boundary, then the South Ruislip-Ickenham boundary (skirting RAF Northolt (former Hill Farm, Ickenham and Hundred Acres Farm, Ruislip) by an abrupt direction change from south-west to eastwards). Failing to drain to the site's south-east corner it is fed by the East Arm having passed there. The brook then settles on a south course. It bisects Yeading then forms

1443-637: The works is not discharged here but is instead piped to the Tideway (upper estuary of the Thames) at Isleworth Ait . The Crane in major part delimits the London boroughs of When extending the Piccadilly line from Hounslow West to Heathrow Airport , the high water table of the ground beneath the Crane made it impractical to tunnel under the river channel, so the lines briefly emerge from their tunnels here and cross over

1482-406: Was designed to treat three million cubic metres per day of sewage. Battery B, 6 Battery C, 3 The works were expanded in 1962, 1989 and 1991 and upgraded in 1996–2002. The 1962 extension included commutators, grit chambers and pre-aeration tanks, together with the following additional tanks. The most recent expansion, in 2011–13, increased the treatment capacity by more than half and increased

1521-589: Was piped to settling ponds at the Perry Oaks Sludge Treatment Works near Heathrow Airport . In 1989 the Perry Oaks site was closed and the land reclaimed for Heathrow Terminal 5 with new sludge dewatering provided at nearby Iver South. There is a plant for dosing the effluent with hydrogen peroxide before the outfall pipes. This is operated on the instruction of the Environment Agency if

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