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Halliwick Recreation Ground - Sustainable Urban Drainage Scheme (SuDS) consultation

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Consultation has concluded

Second phase of consultation

Following on from the initial consultation, we will be running a series of engagement sessions during which the designs will be on display. Please come along to speak to one of our consultants and have your say about the scheme.

The dates for engagement are as follows, and you can find more information by clicking on this link:

  • Sunday 16 October
  • Sunday 13 November
  • Sunday 29 January


First phase of consultation

Background

The council is the Lead Local Flood Authority (LLFA) for London Borough of Barnet as stipulated under Flood and Water Management Act 2010. As

Second phase of consultation

Following on from the initial consultation, we will be running a series of engagement sessions during which the designs will be on display. Please come along to speak to one of our consultants and have your say about the scheme.

The dates for engagement are as follows, and you can find more information by clicking on this link:

  • Sunday 16 October
  • Sunday 13 November
  • Sunday 29 January


First phase of consultation

Background

The council is the Lead Local Flood Authority (LLFA) for London Borough of Barnet as stipulated under Flood and Water Management Act 2010. As an LLFA this means we are responsible for managing local flood risks from surface water, groundwater, and ordinary watercourses across the borough.

Barnet’s Local Flood Risk Management Strategy has identified 33 Critical Drainage Areas (CDAs) which are at the highest risk of surface water flooding. The top ten priority CDA’s, including Muswell Hill (CDA 014), are part of our priority flood risk management program that has been produced as part of our Local Flood Risk Management Strategy.

This consultation is for the proposed flood alleviation scheme (within Muswell Hill CDA) at Halliwick Recreational Ground (N10) in Barnet. The scheme proposes to build a new flood storage detention basin in the north -eastern corner of the Halliwick Recreational ground which will store storm water during heavy rain, reducing the risk of flooding to nearby properties and highways.

Benefits of the proposed scheme

The proposed scheme will be the first sustainable urban drainage scheme in the borough. In addition to providing flood mitigation benefits, the scheme will provide environmental, amenity benefits for the local residents and biodiversity and habitat enhancements. The flood storage basin will also provide water quality benefits by treating the storm water runoff from the highways.


Scheme details and how the scheme will look

The scheme will divert the rainwater from Albion Avenue (N10) into a shallow drainage channel along the existing footpath in the recreation ground and then store it in a basin in the north-eastern corner of the Halliwick Recreational ground. The scheme will be carefully designed to reduce the flood risk to the nearby properties and highways. You can view the images here.


What we are consulting on

The scheme is now being moved into Detailed Design and Construction stage and we want to hear your views on our proposals, so that we can gather your feedback at an early stage, before the detailed designs are finalised. We are very interested to hear from local residents specially along The Vale, Albion Avenue, George Crescent and other adjacent streets about their past flooding experiences.


How to have your say:

Attend an engagement event in the Recreational ground.

An engagement event on the proposed scheme has been organised for 19 June in the Halliwick Recreation Ground, where we will be happy to share more information on the scheme and capture any initial feedback from local residents.

The event will also be used to highlight the benefits are of such schemes and help raise awareness of the flood risk and impacts of climate change within the local community.

Regular engagement events will then be organised in the Recreation Ground throughout the summer and autumn and the dates will be published on this page. We will keep residents updated on the progress of the scheme.

If you would like to be informed on the upcoming events, please complete an online registration form. LINK

Complete our online questionnaire

We are keen to hear your views on our proposals and encourage you to also have your say by completing our very brief and simple online questionnaire.

If you would like to request a paper questionnaire or another format, please: email fwm@barnet.gov.uk or telephone 020 8359 3555.

You can also send any previous flooding photos/videos to fwm@barnet.gov.uk.

Alternatively, you can write to us at:

Flood & Water Management, 7th Floor – Re Highways, London Borough of Barnet, 2 Bristol Avenue, Colindale, London, NW9 4EW.

If you would like someone to help you complete the questionnaire or need more information, please contact us using one of the above methods.

What happens after the consultation closes?

This initial consultation to gather early feedback closes on 30 July 2022.

We will consider all the comments returned to us, and if possible, will utilise them to inform the detailed design of the scheme, expected to finish by September 2022.

We will publish the results of this initial consultation in September 2022.

Consultation has concluded

  • Phase 1 - We asked, you said, we did

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    We asked

    We asked you about your views on the proposed Sustainable Drainage Scheme (SuDS) / flood storage detention basin in the north-eastern corner of Halliwick Recreation Ground which aims to store storm water during heavy rain reducing the risk of flooding to nearby properties and highways. We also asked local residents to inform us of their past flooding experiences. The aim was to capture early feedback from residents to inform the detailed design of the scheme ahead of detailed design and construction.


    You said

    There were 17 responses to the online questionnaire. You told us the road locations and addresses that have experienced flooding and provided details about which areas of your properties have been affected.

    Results of the survey showed us that support for the SuDS proposals was high at 94% (56% strongly support the scheme and 38% tending to support the scheme).

    The majority of respondents agreed that the proposal will bring benefits to properties and infrastructure, the environment and local community. Several respondents asked for further engagement and education to understand the benefits fully.

    We did


    The survey has enabled the project team to consider feedback from the community and gather preliminary data about:

    • How respondents are connected to the local area – living or working in the area and duration.
    • Frequency of property flooding from rainfall runoff and extent of flooding.
    • Specific locations where flooding is taking place.
    • Local knowledge regarding sewage, access to key infrastructure and ability of highway gullies to cope with heavy rainfall.
    • People’s views on the SuDS scheme and levels of support.
    • Demographic data of those affected.

    We have taken on board your feedback and will use this when developing the final designs for the SuDS. We will also be delivering several consultation sessions across Winter 2022/2023 at Halliwick Recreation Ground to continue engage with local residents and provide further information about the scheme. These sessions will be promoted locally.

    A full summary of the survey results can be found here.

  • Phase 2 - We asked, you said, we did

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    We asked

    A review of previous consultation showed that although respondents to the Halliwick Rec SuDS questionnaire stated they generally supported the scheme, some felt they needed further engagement and education to understand the benefits fully.

    In summer 2023, we engaged a specialist to work alongside the project team and consult with the local residents about the scheme. In September 2022, over 1000 educational flyers were distributed to houses locally as well as to shops and businesses along Colney Hatch Lane with posters erected at the park entrances. Further to this a series of engagement and consultation sessions were delivered at Halliwick Rec Ground and St Peter Le Poer Church between October 2022 and January 2023 to increase awareness and understanding of the local flood risk and the scheme itself. During the sessions, designs and images were on display and the local community were given the opportunity to have their say during the design process, ahead of construction of the scheme.

    We asked for your opinions on the concept design and for you to engage with us to inform the design development from concept design through to the final detailed scheme.

    You said

    Across the three dates between October 2022 and January 2023, 267 people engaged with the designs for the Halliwick Rec SuDS and joined in the activities.

    The consultation process proved invaluable in raising awareness of the scheme and improving understanding of the need for flood risk management and the wider benefits that the project will deliver. It also enabled the those who attended the sessions an opportunity to help shape the final detailed design so that it met the needs of the local community.

    The general consensus from the consultation process is that the wetland is welcomed, along with a new central footpath, the resurfacing of existing footpaths, and the new landscaping including the mounding, tree planting and informal children’s play.

    Some concerns were raised during the consultation sessions in relation to maintenance, health and safety and privacy. These have been addressed in the design process and in consultation with the Council’s Parks and Flood Risk Management teams.


    We did

    Suggestions made by the local community throughout the process have been taken on board and designs have been amended accordingly.

    A summary of the outcomes of the engagement sessions and comments made can be found here.

    Key amendments to the designs as a direct consequence of the consultation outcomes have included the reshaping of the mounds, the inclusion of a viewing platform as opposed to an imposing boardwalk, the number and location of tree planting and additional wetland edged planting. Much of the highly desired wider park landscaping and infrastructure improvements have also been incorporated into the scheme including new seating and bins, the creation of a new central footpath and resurfacing of the existing footpaths following the securement of additional funding by the Council and the Friends of Halliwick Rec.

    The scheme has been carefully designed to reduce the flood risk to nearby properties and highways and to increase the amenity and biodiversity. Designs have been shaped in accordance with the outcomes of consultation delivered between June 2022 and January 2023 and in line with available budgets. The final designs for the SuDS at Halliwick Rec Ground were presented during the sessions on 29 January 2023 and can be viewed here.

    Construction is set to commence on site in the Spring/Summer 2023 with completion anticipated by the end of 2023.