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Peter Brett flood design helps secure planning for vast Lincolnshire Lakes project

Outline planning consent has been granted for the huge Lincolnshire Lakes scheme – thanks in part to flood risk advice provided by Peter Brett Associates (PBA).

Lincolnshire Lakes

Artist impression of the proposed Lincolnshire Lakes development.

The project, which is expected to deliver 6,000 homes, is situated on the flood plain of the River Trent in Scunthorpe.

PBA worked for developer Lucent, providing advice on flood risk and public engagement.

The land on which the new development will sit is set to be raised, with the buildings’ floors be constructed higher off the ground than is standard.

Existing defences on the River Trent will be strengthened through the installation of steel sheet piles within the bank. The reinforcement is intended to provide flood protection for the proposed settlement, as well as improve defences for existing communities.

A back-up power-supply system for an existing pumping station that deals with surface-water drainage was also agreed as part of the flood mitigation measures.

The suite of flood management measures were tested through complex computer modelling to satisfy the Environment Agency, which had initially objected to the scheme.

Ben Mitchell, the PBA partner who led the flood risk work, said: “While the site lies in a defended floodplain, there is always a residual risk of failure of such raised defences. This risk will be reduced by the installation of either Passive Breach Arrestors (short lengths of continuous piling) or full continuous piling to effectively convert the existing ‘soft’ flood defence into a ‘hard’ defence. These works will reinforce the existing defences with the result of reducing the scale of any potential breach in the main defence and thereby reduce the extent and depth of flooding. We were able to demonstrate through our computer model simulations of different breach scenarios how the flood risk reduces for the existing communities.”

The planning consent gives the green light for the homes to be built and major infrastructure works to be completed.

Lincolnshire Lakes is one of the largest development projects in the country. The outline planning consent will enable housebuilders and other development partners to acquire ‘development ready’ land within Lincolnshire Lakes.

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