© Crown copyright 2017
This publication is licensed under the terms of the Open Government Licence v3.0 except where otherwise stated. To view this licence, visit nationalarchives.gov.uk/doc/open-government-licence/version/3 or write to the Information Policy Team, The National Archives, Kew, London TW9 4DU, or email: firstname.lastname@example.org.
Where we have identified any third party copyright information you will need to obtain permission from the copyright holders concerned.
This publication is available at https://www.gov.uk/government/publications/newhaven-flood-alleviation-scheme/newhaven-flood-alleviation-scheme
In December 2013 the south coast of England was hit by a storm surge coming down from the North Sea. The storm saw hurricane-force winds and the highest tide in some places for almost 60 years. The tidal surge in the Newhaven area affected between 50 and 60 properties in the Railway Road area, as well as closing the railway line between Lewes and Seaford.
The Environment Agency, in partnership with Lewes District Council, is developing a scheme to reduce flood risk from the sea. The scheme will reduce the risk of flooding to approximately 430 homes and 390 businesses in and around the East Sussex town of Newhaven.
The scheme will be designed to provide a 1 in 200 year standard of protection, taking into account the effects of climate change. This means that in any one year, there will be a 0.5% chance that Newhaven will experience flooding from the sea. This greatly increases the flood protection to Newhaven.
In addition to homes and businesses, the scheme will also reduce the risk of flooding to local infrastructure such as the road network, railway line and a train station. It will support the wider regeneration of Newhaven, helping to bring new investment, jobs and homes to the area.
The scheme covers both banks of Newhaven, including the commercial areas near the port.
Construction of the scheme started in January 2017 and is scheduled to be complete by autumn 2019.
The scheme has been divided into 5 areas:
- Area 1: A26 to Energy Recovery Facility
- Area 2: Energy Recovery Facility to Swing Bridge (East)
- Area 3: Riverside Park to Swing Bridge (West)
- Area 4: Swing Bridge (West) to West Quay
- Area 5: Swing Bridge (East) to Newhaven Beach
The scheme is estimated to cost around £18 million, with the majority of funding coming from the Environment Agency in the form of central government Flood and Coastal Risk Management Grant in Aid.
The Coast to Capital Local Enterprise Partnership and South East Local Enterprise Partnership are each contributing £1.5 million, as part of their wider commitment to regeneration in Newhaven. These contributions are essential to enable the project to proceed. Local Enterprise Partnerships (LEPs) were established across the UK by government. They are partnerships between local councils and businesses that decide what the priorities should be for investment in roads, buildings and facilities in the area.
The Environment Agency always seeks funding contributions and co-operation from companies and organisations that will benefit most from the work. At Newhaven the Environment Agency is working with Network Rail, landowners and others to help with building and securing additional funds for the scheme.
Construction update: November 2017
Works on the west bank are complete and are reducing the flood risk to 244 homes, 88 commercial properties and vital infrastructure.
Area 1: A26 to Energy Recovery Facility – currently under construction
The Environment Agency has planning permission to construct 2 clay-cored bunds to reduce the flood risk to properties on the east bank from the upstream flood plain. One bund will start near the A26 junction with the B2109, extend roughly 500 metres west across the flood plain, where it will tie-in to a new railway flood gate built near the existing pedestrian crossing. The second bund will tie-in to the western side of the flood gate and extend to the Energy Recovery Facility. The crest of the bunds will be at the same level along the entire length. Beside the A26 the bund will be 1.6 metres higher than existing ground levels and near the railway, where the ground falls away towards the river, the bund will be 2.7 metres above existing ground level.
During flood events, demountable flood barriers will be put in place across the A26. Outside of these periods these barriers will be located within a nearby storage area.
Work started in Area 1 in May 2017.
The work to construct the eastern bund is scheduled to be complete by the end of December 2017. The bund west of the railway will be completed in early 2018.
Area 2: Energy Recovery Facility to Swing Bridge (East) – currently under construction
Area 2 extends approximately 850 metres along the East Quay from the Energy Recovery Facility to the Swing Bridge (East).
The southern section is now complete with the exception of fencing which is currently awaiting pricing.
Complex design challenges affecting remaining sections of flood defence wall in Area 2 required some fine tuning of the construction approach and the Environment Agency expects this work to be concluded by early 2018.
Area 3: Riverside Park to the Swing Bridge (West) – construction complete
The Environment Agency has constructed a 150 metre long bund north of Cantell’s boatyard and this will protect homes to the west. This work is now complete.
Denton Island works are now complete with the pathways now open.
Area 4: Swing Bridge (West) to West Quay – construction complete
Work within Area 4 started in January 2017 and was completed in June 2017.
A 140 metre long reinforced concrete wall has been constructed from the south west side of the swing bridge to a point adjacent to the Ark pub. The wall crosses the entrance to 3 fishermen’s jetties and demountable defences known as ‘stop logs’ have been installed to complete the flood defence here.
A short section (about 20 metres) of bund has been constructed in West Quay, raised by around 250 millimetres. This bund is complete, and the flood fence is operational.
In Huggett’s Green the low level grass bund at the rear of Huggett’s Green has been realigned and raised to meet flood protection standards. The total length of the bund is approximately 150 metres and it ties into the footpath near the promenade to the south. Walls have been built within the grass bund to offer greater levels of seating on Huggett’s Green and more seating and hand rails are provided around the existing circular paved area. This also supports the new flood gate over the promenade, which will remain open when not in use during a flood event.
Now that the bund has been built, the area has also been restored. Some trees have been removed and these will be replaced with native trees and shrubs around the existing paved area and the electricity sub-station to provide better screening. The area and bund have been seeded and the new grass has become established during the summer months. The hand rails are now in-situ and all fencing has been removed.
Area 5: Swing Bridge (East) to Newhaven Beach – currently in construction
Area 5 extends from the Swing Bridge (east) along East Quay towards Newhaven Beach to a distance of approximately 1.3 kilometres. Planning permission is in place and detailed design is substantially complete, with some elements of the complex flood defence in the port area remaining to be finalised.
Work has begun to expose services at this area and digging will commence for the wall near to the swing bridge. Gabion baskets positioned by the UTC are due to be completed by mid December.
Reducing the impact of construction
During the construction phase, you may be affected by the work. Some potential impacts include:
- impact on trading businesses
- impacts on amenity such as temporary loss of public open space and car parking
- footpath closures
- temporary impact on visual amenity
- delays due to construction road traffic
- noise and dust impacts
The Environment Agency will mitigate these impacts by implementing several measures:
- work shall only be carried out between 8am and 6pm Monday to Friday, and 8am to 1pm on Saturdays. Noisy works will be carried out between 8.30am and 6pm with the remaining time used for quieter activities
- large deliveries will, where possible, be arranged to avoid peak traffic times
- water will be used to dampen down machinery and roads to reduce the amount of dust
- details of who to contact for information will be available on signs around all work sites
- all working areas will be sufficiently and adequately fenced off from public area
- all fencing and hoarding will be removed as soon as reasonably practicable after completion of the works
- working areas will be kept tidy and waste materials removed from site on a regular basis
- residents will be informed of the work and its duration in advance of any site work commencing
- site lighting will be designed to reduce intrusion into adjacent areas
The Environment Agency has carried out an Environmental Impact Assessment (EIA) and the Environmental Statement was submitted as part of the planning application. This considered a number of topics including landscape, cultural heritage, ecology, noise, water environment and people.
Great crested newts were found in Area 1 and a mitigation strategy is underway. Japanese knotweed was found in Area 4 and a mitigation strategy was put in place during the work.
The presence of other protected and/or notable species include reptiles, breeding and wintering birds, and other aquatic species and habitat which supports otters and water voles were assessed. Mitigation for all environmental constraints has been identified in the Construction Environmental Management Plan.
The Environment Agency will continue to speak to residents and businesses that may be directly affected by the proposals, including attending local events, drop-in sessions for residents and 1 to 1 meetings with businesses on the east bank.
Construction of the scheme started in January 2017. The whole scheme is due to be completed by autumn 2019.
For more information about the scheme please contact the Grant Moffatt or Oliver Sykes at the Environment Agency on 03708 506506 or email email@example.com.
You can also follow the project on Twitter @EnvAgencySE #newhavenFAS.