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Erringden Hillside Flood Alleviation Scheme

The Erringden Hillside Flood Alleviation Scheme will better protect approximately 60 properties from surface water flooding. 

The plans for the scheme include: 

  • Installation of Property Flood Resilience Measures at eligible properties at Fairfield and Stubbings Brink 
  • Improvement of highways drainage and surface water capture at New Road, Hebble End, Shelf Road and Palace House Road 
  • Development of NFM opportunities. 
Flood-Defence-Illustration
About the scheme 

Delivered by the Environment Agency, in partnership with Calderdale Council, Ove Arup and Partners, the three main areas of work are above Stubbing Brink, at Hebble End and Fairfield.

Latest information

In partnership with Calderdale Council, the Environment Agency is finalising detailed design and agreeing the implementation of the highway drainage options. Submission of the full business case, which aims to secure approval for scheme delivery, is forecast for early 2024. Following approval of the full business case we will be communicating with eligible property owners regarding the Property Flood Resilience options and working with Calderdale Council to progress construction of the highways drainage improvements. We will also be working with local landowners and partners to develop further Natural Flood Management opportunities on the hillside.  

Written updates for the Hebden Bridge Flood Alleviation Schemes Key Stakeholder Group can be viewed here:

February 2024 - update

Current forecast project timescales can be viewed here

 

The area

Erringden Hillside is located along the southern edge of Hebden Bridge in the Calder Valley. The upper slopes are primarily used for agriculture, with wooded areas on the mid slopes providing a buffer between the more developed lower slopes. The impacts of industrialisation associated with the milling industry are evident with the Rochdale Canal and the Calderdale railway flanking the River Calder within a narrow corridor along the valley bottom.

The catchment is characterised by steep slopes, with interconnected bridleways, footpaths and roads that traverse the hillside. The project area has been considered as three discrete elements, which are summarised as follows:

Stubbing Brink

Located at the western end of Hebden Bridge, this straddles the Rochdale Canal and Calderdale railway cutting. The area is primarily residential.

Hebble End

The site is located between the River Calder and Rochdale Canal and contains a mix of residential and commercial properties. It provides an important access point to the Fairfield and Horsehold areas.

Fairfield

Located at the east of Hebden Bridge, it is bounded by the railway line. The area is primarily residential.

The network of footpaths and access tracks on the steep catchment provides efficient routes for surface water to flow down the hillside to the urbanised areas of Hebden Bridge.

Calderdale valley.
Past flood incidents

The three areas within the project have been flooded in recent years. The most notable event was in June 2012 when existing drainage infrastructure was unable to cope with the volumes of surface water, resulting in flooding to many properties.

In December 2015 flooding was widespread across Hebden Bridge. Whilst surface water runoff affected the key study areas, the intensity was generally less than in 2012.

In February 2020 during Storm Ciara, more than 100mm of rain fell in the upper Calder catchment between 11pm Saturday 8 February and 11am Sunday 9 February. This was the second highest flood event recorded in the Calder Valley, second only to the Boxing Day flooding of 2015. Calderdale received more than a month’s rainfall over 48 hours during Storm Ciara (129.8mm). This led to many properties and communities been impacted by flooding again.

Environment Agency staff walking along the canal path.
Environmental considerations

As part of the Erringden Hillside Flood Alleviation Scheme the Environment Agency have commissioned a suite of surveys to identify any potential environmental risks and identify opportunities for environmental enhancements which can be incorporated into the design of the project.

Ecology

A Preliminary Ecological Appraisal Report which examined any ecological constraints, as well as any habitats for protected species, has been undertaken. The recommendations from this report include appropriate timings to work in the river, any tree removal, and mitigation measures for any construction work.

Bat Surveys

As part of the Preliminary Ecological Appraisal Report it was identified that two bridge structures that may be affected by the proposed works had moderate to high bat roost potential. Two dusk emergence surveys were undertaken in the summer of 2021 to investigate whether any bat roosts were present in these structures. The surveys concluded there were no bats roosting.

Tree Survey

The tree survey identified the location and condition of trees along the proposed scheme. An initial assessment aims to keep as many trees as possible. This will be developed and reviewed as the design progresses. We will replant five trees for every mature tree removed and will work with stakeholders to identify where the replanting could take place around the Erringden Hillside area.

Water Framework Directive

A Water Framework Directive Screening Assessment has been undertaken. This assesses the biological elements (including fish and invertebrates), as well as flow quality or river width and chemical quality elements such as sediment or pollution. The proposed scheme is likely to result in minor localised impacts to the ‘Calder from Colden Water to Ryburn Confluence’ and ‘Rochdale Canal – Eastern Section’ Water Framework Directive water bodies. However, the proposed scheme is not anticipated to cause any significant adverse effects on the quality elements of the water bodies, when considered against the embedded construction phase mitigation.

Heritage

A Heritage Desk Based Assessment is being prepared for the Erringden Hillside project. Initial findings have identified the risk of permanent adverse impacts associated with this package of works to be low. Works are primarily within the existing highway and which means the likelihood of disturbing archaeological remains is low. There is also a small number of listed assets that may be affected by the works and given their nature, permanent impacts upon setting are unlikely.

Biodiversity Net Gain

Biodiversity Net Gain is an approach to development that leaves biodiversity in a better state than before. Where a project has an impact on biodiversity it encourages the project to provide an increase in appropriate natural habitat and ecological features over and above that being affected. This means that any loss of biodiversity through development will be halted and ecological networks can be restored.

The initial biodiversity baseline has been calculated for the proposed project. The Environment Agency are aiming to provide 20% Biodiversity Net Gain on this project.

Environment Agency staff walking along the canal path.

Working with the Community

The Environment Agency regularly holds meetings with partners, local councillors and community representatives to provide them with updates on progress of the scheme. A key stakeholder group has been set up - a list of represented groups can be found here.  You can view the latest updates shared at the meeting in the link below.  The project team has also taken part in community forums such as the Hebden Bridge Business Forum and the Disability Access Forum to get feedback on proposals for the scheme.  The project team have worked closely with the local community and flood wardens to understand the local flood risk issues and refine the scheme designs.

February 2024 Update

As details of the design of the scheme develop there will be further consultations with people who are affected to discuss proposals.

For any enquiries about the scheme please email: HebdenBridgeFAS@environment-agency.gov.uk

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