Brent Council announcement on new Tokyngton Avenue flooding - industrial pumps may be called in leading to road closures

 Tokyngton Avenue flooded again yesterday and Brent Council issues the statement below. They have promised updates on this LINK.

We are aware of the flooding in Tokyngton Avenue and are working closely with the Environment Agency to resolve this matter as soon as possible.

Over the coming days you may notice more noise outside as passageways are dug to make space for the water to flow away again.

This work is vital to reduce the risk of homes in Tokyngton Avenue being flooded again.

As rain is predicted to fall over the coming days, there is the possibility the Environment Agency will need to bring in industrial water pumps to help drain surface water. These are big systems so we may need to temporarily close some roads and pathways in the area to put this in place.

Thank you for your patience while we do everything we can to get this resolved.

If you experience any further flooding, please call the Environment Agency on 0845 850 3518 immediately and provide the reference number 2174690. You do not need to ring the council or any other agency.

• Provide your name, address, post code and contact telephone number
• Please describe what you are experiencing. For example, is the water level rising, has it flooded your garden, is it coming into you home?
• Please advise where you believe the water is coming from

Once you have contacted the Environment Agency, a Duty Officer will attend the scene if appropriate. They will then decide the best course of action to be taken. Do not let anyone without proper official identification into your home. Council officers and Environment Agency officials always carry identification and will show this when asked.

We are aware that the Environment Agency has provided properties that may be affected by flooding with sandbags for you to use when and if required.

In an emergency, if you need to leave your home because of water entering your property, please call the Fire Brigade on 999.

BREAKING: Call for multi-agency action on threat of severe flooding of the Wealdstone Brook in Kenton

 

The course of the Wealdstone Brook causing concern over flood risk

Following a series of  recent first hand observations of the Wealdstone Brook between Becmead Avenue in Harrow and the Falcon Way bridge in Brent, John Timms MBE – a local expert hydrologist with a wealth of knowledge and 35 years of experience on hydrology issues including the Wealdstone Brook - and John Poole, a local Kenton resident for 50 years whose garden also backs on to the Wealdstone Brook, have both concluded that they are very concerned about the potential impact of a severe storm event in the Kenton area of the Brent catchment.

 

The lack of Wealdstone Brook base and bank maintenance and observed obstructions in the brook have led us to conclude that there is the potential for a serious flooding event the next time there is a torrential downpour which can cause the brook to fill up rapidly, for the water in the brook to move at a speed approaching 2.5 metres per second and a discharge of 20 cubic metres per second, for the foul surface and foul sewer network to reach maximum capacity quickly and overflow creating a major flooding event in the area.

 

On the 16^th and 17^th of August 1977 1,200 homes and business were flooded to a depth of up to 1.5 metres in the Brent catchment. The factors that exacerbated the flooding then are still present 45 years later and John Poole personally witnessed the event in 1977.

 

We are issuing this joint statement because, although Thames Water is presently carrying out its legal duties in locating and dealing with sewage and surface water pollution of the Wealdstone Brook in Harrow and Brent, we do not believe that the agencies with responsibility for maintaining flood risks in the area, namely Harrow and Brent councils, Thames Water and the Environment Agency, are taking the necessary action to reduce the risks from potential flooding in the area.

 

We have photographic evidence of potential obstructions in the Wealdstone Brook which, during a severe storm event, may cause blockages of culverts along the open length of the brook, which is mainly in Brent, with consequential flooding of residential and public properties.

 

We call upon Brent and Harrow Councils, Thames Water and the Environment Agency to find ways of working together with local stakeholders to urgently find a resolution to these issues of the maintenance of the Wealdstone Brook in order to reduce the risks of flooding in the future. This should include recommendations to improve resilience to future flooding events as well as implementing locally the final recommendations in July 2022 of the Independent Review into the severe flooding in London on 12 July 2021 and 25 July 2021.

 

Cross-party and non-party call for Brent Council to play its part in tackling Wealdstone Brook pollution

 'Nauseating' - Wealdstone Brook earlier this year

 

Wembley Matters has covered the long-running issue of sewage and other pollution of the Wealdstone Brook that runs through parts of Harrow and Brent. Environmental campaigners, local residents and local political parties, have joined together to put pressure on the Environment Agency and Thames Water to take action.

 

As a member of Brent Green Party I welcome this cross-party and non-party approach to an important local environmental issue that affects everyone regardless of party.

 

At Full Council on July 11th Kenton resident John Poole will be make a deputation about the matter and later a motion from the Conservative Group, which I hope will received support from across the council chamber, will ask Brent Council to do all in its power to ensure the brook is cleaned up by the relevant agencies,  rectify wrongly connected foul sewers and consider legal action.

 

This is the Conservative Group Motion

Pollution of the Wealdstone Brook

 

The Wealdstone Brook, which runs in open water, starts in Harrow, runs through Woodcock Park in Kenton and then into Wembley past all the new developments around the stadium before reaching the River Brent, has been heavily polluted with untreated human sewage and toxic chemicals for some considerable time.

 

The Wealdstone Brook has nothing living in it – it is effectively a dead river.  The toxic smells which have come from liquids evaporating at low temperatures from the Brook water are nauseating and residents who live close to the Brook or have been walking close to the Brook in Woodcock Park, have been feeling physically sick as a result of these noxious odours.

 

 

Thames Water, who have been investigating the sources of the pollution, have admitted liability for cleaning up the pollution.  They have agreed that the pollution of the Wealdstone Brook is one of the worst they have come across but as a result of the shared responsibility for the maintenance of the Brook as it passes through Brent, Brent Council and the Environment Agency must also share some of the responsibility.

 

As a result the residents living nearby have expressed their disgust at the state of the Brook and consider that Brent Council should have declared this to be a ‘Major Incident’ once it had reports of untreated human sewage, toxic gases and smells vaporising from the water of the Wealdstone Brook.

 

This Council therefore resolves:

 

To do whatever is necessary and within the Council’s power to ensure that the water in Wealdstone Brook is cleaned up.

 

To do what the Council can to ensure that the agencies concerned take the necessary steps to detect and rectify all wrongly connected foul sewers which run into the Brook and to put them right at no cost to Council tax payers, in Brent.

 

To seek legal opinion as to whether legal action can be taken against the agencies that have responsibility for ensuring that the Wealdstone Brook is free of pollution if there is no immediate rectification of the problem.

 

 

To ensure in light of a serious risk to public health and as a matter of urgency the necessary actions are taken as soon as possible to put the foregoing into practice. 

 

Councillor Michael Maurice

 

Kenton Ward

Barry Gardiner MP takes up the issue of pollution in the Wealdstone Brook

Barry Gardiner, MP for Brent North, in whose constituency some of the sewage pollution of the Wealdstone Brook, has occurred has taken up the issue with the CEO of Thames Water, Sarah Bentley, and the Environment Agency.

Dear Sarah Bentley

 

Re: Pollution Event at the Wealdstone Brook

 

I am concerned that Thames Water claim that the ongoing pollution incident at the Wealdstone Brook is the result of misconnections upstream. You will be aware of the work that your officials have been doing over a number of years with the Brent & Harrow Flooding Working Group which I established with John Timms MBE. Part of this work was to address the problem of misconnections which has blighted the Brook for so long. However, it is clear to us that the current pollution is not the result of domestic or industrial misconnections, but rather of an asset failure on the part of Thames Water. As such it represents a Category 2 Pollution Event and for this reason I am copying Emma Howard Boyd and Sir James Bevan at the Environment Agency to this letter.

 

In one of your recent speeches you were good enough to refer to my constituent, John Timms, and acknowledged that the company had learned a great deal about the local catchment from the monitoring and graphic representations which he had compiled over almost a quarter of a century. Key to his work is the data on water quality and river levels which can indicate when there is a problem with one or more of your assets such as the Dual Manhole Chambers. It is for this reason that we in the Flooding Working Group have not only insisted on the need for a proper separation programme and the need to track misconnections upstream (which your officers have strenuously resisted on cost grounds), but also on the importance of putting Flow Monitors into the surface water sewer at strategic points.

 

You will understand that in the Dual Manhole Chambers where an inspection cap is missing from the surface water sewer, it allows the foul water to back up into the surface resulting in precisely the sort of pollution incident that has afflicted the Wealdstone Brook now since February. The same pollution event can arise from a fracture in the surface water chamber which it is Thames Water’s responsibility to maintain. Had you followed the advice of the Flooding Working Group and installed Flow Monitors as suggested, we believe the latest incident could have been instantly identified and remediated. Their lack has meant that Thames Water has not been able to identify the source of pollution and is putting forward what your officials must surely recognise is a highly unlikely claim that it is the result of domestic misconnections.

 

I am aware that you are seeking to identify the pollution source and work with the riparian Authorities to clear detritus and flush the Brook with clean water to get rid of the toxic smell. I would also ask that you now install the Flow Monitors as requested so that incidents such as this do not keep happening.

 

Yours sincerely,

 

Barry Gardiner

Member of Parliament for Brent North

 

Wealdstone Brook campaigners call on Barry Gardiner MP to pressure agencies for urgent action to solve the pollution problem

 

Alicia Close on April 1st 2022

With frustration mounting over the lack of action by the appropriate agencies over toxic sewage contamination in the Wealdstone Brook a call has been made to Brent North MP  Barry Gardiner for support.

Dear Mr Gardiner,

We support all parks groups in Brent as part of the London and National Friends of Parks organisations.  We are supported by Mayoral funded Parks for London who advise and train London Councils and parks departments.  

We have joined the Brent and Harrow Rivers Alliance which was formed out of Harrow Parks biodiversity management groups and Brent Friends of Wealdstone Brook and Friends of Woodcock Park. 

We all call upon you to support the need for action from the Environment Agency, Thames Water and Brent Council to rectify this consistent river pollution issue that is in its 10th week and getting worse due to lack of causation tracking in a logical manner, based upon previous incidents at this time of the year (last year).   The Thames Water officer in charge is new and has been finding some difficulty in coordinating action, unlike previous years. There seemed to be a lack of staff, willingness to fund solutions and the result is more funds are now needed to reach a solution that returns the Brook to at least what is was 11 weeks ago.

 

Yours sincerely,

 

Brent Parks Forum 

 

Agencies united in complacency over the Lidding Road Garage development as raw sewage just keeps rolling along in the nearby Wealdstone Brook. Planners recommend approval.

 

Something nasty is stinking out the Neighbourhood

After a Bank Holiday weekend when residents put up with a nasty stench from the Wealdstone Brook as raw sewage drifted lazily through Kenton in the unusual heat, Brent Planners have issued a Supplementary Report on the nearby Lidding Garages Planning Application that is being decided at Planning  Committee tonight.

This follows an additional comment received by planners. Despite the concerns voiced in the comment based on a resident's first-hand  experience,  planning officers are none the less recommending that councillors approve the application.

This is the report:

Hurray! Thames Water turns up to flush sewage from the Wealdstone Brook

 

Sewage pouring into the Wealdstone Brook

Local residents were delighted today when Thames Water turned up to flush out the Wealdstone Brook. The action followed weeks of campaigning and complaints to both the Environment Agency and Thames Water.

Households and care homes backing on to the brook were experiencing their 6^th week of continuous pollution with the pungent bad egg odour evident to all. Residents were unable to open their windows because of the potentially dangerous gases filling their rooms. Brent Council had told the Environment Agency that one gas could be hydrogen sulfide LINK . Campaigners had suggested that a criminal negligence case could be possible over the lack of action by Thames Water, despite a total of at least 7 complaints over the problem.

 

Thames had promised to begin work on cleansing the brook at the weekend. Both cleaning the river and testing of the gas with specialist equipment costs money which the the Forum thought Thames appeared reluctant to spend LINK.

 

They suggested air samples could be taken from conservatories and the rear communal lounges of care homes as well as bedrooms. With children at home for the school holiday and families celebrating various religious holidays together it was  important that any illnesses and potential gas poisoning should be reported.

 

Brent Parks Forum also feared that any wild life that had been in the brook at the important microbial level has probably been damaged beyond repair.

 

The action was long overdue and Wembley Matters hope that the flushing works and we are able to update readers with far more pleasant images of the brook.

Thames Water baulks at cost of clearing worst ever sewage pollution of the Wealdstone Brook

From Brent and Harrow Rivers Alliance  BHRA -  Harrow Friends of Wealdstone Brook  Supported by Brent Parks Forum.   

 

 

 

 From This:  Ducks and Wagtails feeding...

 

 

 To This:  60m and growing raw sewage left untreated with no source yet found  

Since around the 6th March there has been a constant flow of sewage into the Wealdstone Brook from a still unidentified site in Harrow.

The Environment Agency were immediately advised and have not responded to repeated updates of  the incremental thick raw sewage flow that continues unabated.   Thames Water - were also advised in the correct manner direct to their office after the contact Pollution Line was in effect blocked with calls about pollution events (we assume).

Brent Officers; and the CEO of Thames Water attended an unprecedented meeting at the Brook at Woodcock Park on 28th March and took part in a morning walkabout of the site and  saw for themselves the worst, longest running pollution event since recording has begun.

We are awaiting action from Thames Water who were concerned that they would have to deploy operatives from another job to attend the site and the cost of the job itself - which involves flushing a tank of clean water into the brook to move the daily increasing 50-70 m of sewage along! 

There was no  reaction from Thames Water to the imminent threat to the wildlife all the way along past the Civic Centre, three schools and into the River Brent through the Wildlife restoration Project that Thames21 runs. The pollution will slowly increase and move along the waterway!   Unless the source is found and remedied the threat to wildlife will be compounded.   As it has been left since the 10th March - 'vacuuming' - out the pollution is now out of the question - Thames Water do not have tanks large enough to cope with the volume that is increasing steadily.   A factory misconnection is suspected......

Now over 400 food packets (we think out of date), have been thrown into the Brook at the trash screen in Kenton - which has now got thoroughly stuck in the midst of the sewage and the bags are exploding open to feed the sewage fungus in the gel - sludge.   This amount of plastic in the sewage will act as fungus and e-coli carriers as they move towards the wildlife water improvement projects further downstream.   

Volunteers cannot reach them where they are located and have come to rest!  

Thames Water could send in operatives but they are concerned about the cost!   

We await some action to stop the sewage flow into what was a duck filled brook!  

We thank the Brent Engineer - who has visited and has now written a full report of the Brook and his findings.    We also thank Brent Parks Officers who are and continue to be supportive, within their capacity.   

It is possible that that the first signs of sewage were on 17th, 23rd and 27th February when reports to the Environment Agency mentioned murky brown water and silt. The sewage outbreak was reported on February 28th.  If an early warning system was in place Thames Water might have investigated much earlier and resolved the issue.

A Thames Water officer has indicated that the cause of the sewage  flow has been located and Friends of Woodock Park have emailed to confirm the location and the need for flushing.  They assume that the sewage currently visible from Becmead Avenue may indicate an equivalent amount underground at the source.

The Wealdstone Brook, marked in blue on an extract from an 1895 Ordnance Survey map

Substantial work ahead for Thames Water to provide the necessary infrastructure capacity for Brent's new developments

 The main modifications to the Draft Brent Local Plan have attracted little or no publicity or comment but they are of interested and can be found HERE.

Of particularly interest to me are the impact of some of the development plans for Wembley (including KwikFit/Asda,Torch; Stadium Retail Park, McDonalds,Fountain Studios;  Premier Inn, Brook Avenue) in terms of infrastucture improvments needed for waste water and flood mitigation. The Wealdstone Brook flows through this area so some of it is susceptible to fluvial (river) flooding as well as surface water flooding.

These are some of the modifications that have been made (March 2020) regarding infrastructure and indicate a substantial amount of work to de done with Thames Water and developers, as well as the Environment Agency.

Thames Water has indicated the local water network capacity in this area may be unable to support the demand anticipated from this development. Upgrades to the wastewater network are likely to be required. Thames Water will need to be engaged at the earliest opportunity to agree a housing and infrastructure phasing plan to ensure essential infrastructure is delivered prior to the development creating identified additional capacity requirements.

 

Waste water facilities enhancement Thames Water has indicated the scale of development is likely to require upgrades to the wastewater network. Thames Water will need to be engaged at the earliest opportunity to agree a housing and infrastructure phasing plan to ensure essential infrastructure is delivered prior to the development creating identified additional capacity requirements.

 

Thames Water has indicated the local water network capacity in this area may be unable to support the demand anticipated from this development. Upgrades to the wastewater network are likely to be required. Thames Water will need to be engaged at the earliest opportunity to agree a housing and infrastructure phasing plan to ensure essentialinfrastructure is delivered prior to the development creating identified additional capacity requirements. Public sewers cross or are close to the site. The risk of damage during construction must be minimised. It must be ensured that development doesn't inhibit access for maintenance or the services in any other way

 

A critical trunk sewer runs through this site which would need to be considered.

Thames Water has indicated the local water network capacity in this area may be unable to support the demand anticipated from this development. Upgrades to the wastewater network are likely to be required. Thames Water will need to be engaged at the earliest opportunity to agree a housing and infrastructure phasing plan to ensure essential infrastructure is delivered prior to the development creating identified additional capacity requirements. Risk of damage to the trunk sewer during construction must be minimised. It must be ensured that development doesn't inhibit access for maintenance or the services in any other way. 

 

The site is located within an area which is susceptible to groundwater flooding. There are also small areas within the site which are susceptible to surface water flooding. The majority of the site is located within an area which is susceptible to sewer flooding. A flood risk assessment will need to address how development satisfactorily addresses these matters.

  

Wembley Brook and River Brent are potential sources of flooding and the majority of the site is within Flood Zone 3. Part of the site is within including extensive flood zone 3b (functional floodplain). Development, other than water compatible uses, will not be acceptable within functional floodplain. Any flood modelling from applicants which seeks to justify a revision to the functional floodplain boundary will need to be agreed by the Environment Agency.

More vulnerable uses should be restricted to areas of lowest flood risk and on upper floors. Ground floors should be designed to be resistant and resilient to flood risk. Basement dwellings will not be acceptable on the site. Development must be informed by a detail Flood Risk Assessment and Drainage Strategy, reduce flood risk overall and not increase the risk of flooding on adjoining sites. Development must be consistent with the recommendations of the Brent Strategic Flood Risk Assessment Level 2.

 

 Of course there are also issues in other parts of Brent such as Stonebridge (Argenta House, Wembley Point), Neasden Stations, Growth Area, South Kilburn & Alperton).

The document below (March 2020) provides detailed assessments for Stonebridge Park/Unisys (p17) Coombe Road (p23), Watkin Road (p30), Argenta House/Wembley Point (p37), Brooke Avenue (p44), College of NW London - Wembley Campus (p51), Turpins Yard (p58), Park Avenue Garage (p64) Hereford & Exeter House (p70), Neasden Station Growth Area 1(p76), 2 (p82), 3 (p88), Neasden Lane (Press Rd) p94, Stadium Retails Park/Fountain Studios (p100) and Queensbury LSIS/Morrisons (p108)

 

A summary of all schemes is provided at the end of the report.

Click bottom right corner to enlarge:

Thames Water and Environment Agency will attend Brent's January Scrutiny Committee to answer urgent questions on the flooding threat

 

  Recording of November 10th Public Realm and Resources Scrutiny Commitee

The recent Resources and Public Realm Scrutiny Committee heard a heart-rending story from a local resident about her experience in the recent Kilburn floods and from Brent Council officers about the authority's responsibilities regarding flooding and fluvial and surface water occurrences. 

Unfortunately the Council's main partners, the Environment Agency and Thames Water did not attend but will do so in January 2022. The officers' Report can be found HERE.

 

Ruined household items after the July floods on Westminster side of Kilburn Park Road (My London News)

The importance of hearing directly from Thames Water is highlighted by this extract from the My London News coverage of the July floods LINK:

Speaking to the subcontractors working for Thames Water attempting to lower water levels in the drains next to her property, [Aimee] asked about the chances of it happening again, to which one engineer reportedly told her: “The whole system has been compromised. Of course it will happen again.”

Aimee, who is eight months pregnant, claims an engineer employed directly by Thames Water then took the subcontractors to one side in order to speak with them alone.

The following day, she says she was visited by a Thames Water employee who 'looked more senior' and told her the subcontractors 'should not have said that'.

But, when pushed, Aimee claims the engineer couldn't say the flooding would not happen again.

Post flood 'repair' photographed recently on my visit to South Kilburn Estate

As readers will know Wembley Matters has published a number of articles recently on flooding in the area in the light of the number of increased extreme weather events as a result of climate change. I posed a question to the November 22nd Full Council on this and the question and response are below:

1. Question from Martin Francis to Councillor Krupa Sheth, Lead Member for Environment

In the light of the increased prevalence of extreme weather events as a result of climate change and recent flooding in the borough, as well as a large number of new developments and increasing numbers of paved over gardens, does Brent Council:

(1) Intend to work with partners including the Environment Agency and Thames Water to review and revise Brent Council’s

(a) Flood Risk Management Strategy
(https://www.brent.gov.uk/media/16406897/flood-risk-strategy-sept-2015.pdf)

(b) Surface Water Management Plan
(https://www.brent.gov.uk/media/3501160/W8.3%20Brent%20Surface%20Wate
r%20Management%20Plan.pdf)

(2) Advise property owners and developers on mitigation measures?

Response:

Under the Flood and Water Management Act 2010, Brent Council is responsible for reducing the risk of flooding from surface water, groundwater and ordinary watercourses as a Local Lead Flood Authority (LLFA). To continue to meet our responsibilities we:

· Develop, maintain, regularly update and apply a local Flood Risk
Management Strategy. The overarching aim of the strategy is to enable the long-term management of flooding arising from rivers, surface water and groundwater in the borough and to communicate the risks and consequences of flooding to our residents and businesses.

· Maintain a register of flood risk management assets (structures that have an effect on flood risk management). This includes all flood risk management assets such as culverts, watercourses and holding tanks. All drainage assets, including the Council maintained and maintained by Thames Water and Environment Agency are logged on Flood Station.

· Provide overall management for highway drainage (road gullies) on designated public highway. As Highway Authority, we manage the 20,700 road gullies within the borough via a cyclical cleansing regime, and also respond reactively to any defect or blockages on the network.

· Implement small scale schemes to address localised flooding problems such as broken gullies or gully pipes, or localised gully capacity problems. Larger scale capacity problems are within the remit of Thames Water who are responsible for the main drainage system.

· Respond to planning applications - As lead local flood authority, we are a statutory consultee for major developments and in accordance with the GLA plan for Sustainable drainage we ensure that a significant betterment (i.e. improved drainage arrangements) is incorporated into new developments.

This in turn reduces the risk of surface water flooding on our public highways.

· Produce and maintaining a flood risk asset register - All of our drainage assets are located on an asset register, which includes all non-tributary watercourses, culverts and attenuation tanks.

· Issue land drainage consents on ordinary watercourses and carry out enforcement - All works undertaken non-statutory main rivers must obtain consent form the council so we are able to oversee and audit all processes to ensure sustainable measure are undertaken.

· Investigate significant local flooding events - As a lead local flood authority, we investigate all major flooding incidences and record the data.

As LLFA the council works in partnership with utility companies, Environment Agency and others in order to ensure that all appropriate measures are taken to mitigate flood risk. Plans are regularly reviewed and updated as risks and other factors change.

As a Category One Responder under the Civil Contingencies Act, the council has a responsibility to warn, inform and advise the public before during and after emergencies have occurred. We publicise warnings of severe weather and provide advice and information for residents on the council website to assist them prepare for potential severe weather events such as those that may cause flooding. The information provided also outlines what assistance the council is able to offer as well as measures that people can take to protect their own homes.

 

Please support campaigners' vision for the Welsh Harp

 

A group of campaigners for the Welsh Harp (Brent Reservoir)  have published a 15 point vision for its future. There has been a problem with littering around the Welsh Harp for a long time   but the recent lowering of the waterline, so that dam repairs could take place,  have revealed what was in the water itself. A truly shocking revelation.

 

Only one metre below the surface. Debris and contaminated alluvium build-up on the protected East Marsh, revealed during lowering of water levels, January 2021
© Ben Watt

 

The vision for the 170 acres of the area and its Site of Special Scientic Interest would require the Canal and River Trust (owners of the reservoir and shoreline), Brent and Barnet Councils (owners of the open areas), Environment Agency (overseers of the two inflowing rivers and the reservoir's flood control function, and Natural England (who advise on environmental issues and adjudicate on SSSI status), to work together. 

 

That is a tall order but if anyone can achieve that it will be this band of determined, hands on campaigners.

 

Please get behind them by reading the full vision, written by Ben Watt, and making your voice heard. LINK

We wish them well and ultimate success so that a healthy and thriving natural resource will be available for future generations to treasure.