Weymouth flood defence project

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Round 2 Engagement

To continue work to deliver improved protection against flooding and coastal erosion in Weymouth the project team are putting together a shortlist of potential flood and coastal erosion defence options. To develop these options, we need to understand better how these options and emerging designs for the Esplanade and Harbour may impact residents and businesses in Weymouth.

Thank you for your contributions towards this round 2 engagement. This survey closed on 24th July 2023 - the team are reviewing the responses to help develop the shortlist of potential flood and coastal erosion defence options.

Project overview

As a low-lying coastal town, Weymouth is at risk of coastal erosion and flooding from the sea and flooding from the river and surface water. If a severe weather event takes place in Weymouth, thousands of homes and businesses could be flooded.

We know sea levels are rising and extreme weather events will happen more often and may be more severe. In 100 years, the average sea level will be more than one metre higher than it is today. This means that all high tides and low tides will be one meter higher, too.

As part of the Weymouth flood and coastal defence project, Dorset Council is working with Dorset Coast Forum, the Environment Agency, Wessex Water and WSP (engineering consultants), to develop an Outline Business Case (OBC).

An OBC is a document required by the UK Government Treasury when government funds are requested. The OBC will investigate costs and benefits of a range of options, then recommend the preferred options to improve Weymouth’s resilience to flood and erosion risks.

This OBC project will build on earlier work carried out by Dorset Council and the Environment Agency exploring possible options for managing flood and coastal erosion risk in Weymouth. The earlier work recommended a phased approach to improve resilience in three stages:

  • up to 2042
  • up to 2062
  • beyond 2062

The OBC being produced will apply for funding for the first phase of work to take the project up to 2042. It will prioritise sections of harbour walls that are currently lower, or close to the end of their design life, and sections identified along the esplanade which are at the most risk of erosion.

Managing impacts associated with any proposed improvements is a key consideration. These include minimising disruption as far as practicable to businesses, harbour operations, residents, and the community of Weymouth, and managing impacts on fisheries and the environment. As part of the project, we will also be delivering exciting new regeneration opportunities for Weymouth.


Reducing flood risk in Weymouth

We’ll be looking at options to address the different sources of flooding in Weymouth. These include:

  • Surface water flooding (this is caused by rain falling directly onto Weymouth but not being able to drain naturally)
  • Flooding from the sea during high tides
  • Flooding from waves crashing over the sea front
  • Flooding from the River Wey

We will also look at how coastal erosion can be managed.


Working with you

We want to work with the community to reduce flood risk to homes and businesses, protecting lives and livelihoods. We also want to ensure that current and future generations of residents, business owners and visitors can continue to enjoy a prosperous Weymouth.

The knowledge and views of local people will help us to identify suitable options for Weymouth that deliver the most benefits to the community while also attracting enough government funding. While government funding decisions have economic considerations, we know that flood defence options are an important investment in the local community and, by working together, we can deliver wider community benefits. This will make Weymouth a better place to live, work and visit.


Have your say

Dorset Council, working together with the Environment Agency and partners, has put together six key objectives for the scheme:

  1. Improve Weymouth’s resilience to flood and coastal erosion now and over the next 100 years.
  2. Improve understanding of how climate change trends will impact Weymouth to help us prepare and adapt for the future.
  3. Identify opportunities for regeneration and growth in the town centre, which could be delivered as part of the scheme.
  4. Enhance the waterfront and pathway around Weymouth Harbour and the Esplanade so that everyone can continue to enjoy and safely use these spaces now, and in the future.
  5. Work closely with partners to improve the natural environment and protect the historic environment of Weymouth.


Round 2 Engagement

To continue work to deliver improved protection against flooding and coastal erosion in Weymouth the project team are putting together a shortlist of potential flood and coastal erosion defence options. To develop these options, we need to understand better how these options and emerging designs for the Esplanade and Harbour may impact residents and businesses in Weymouth.

Thank you for your contributions towards this round 2 engagement. This survey closed on 24th July 2023 - the team are reviewing the responses to help develop the shortlist of potential flood and coastal erosion defence options.

Project overview

As a low-lying coastal town, Weymouth is at risk of coastal erosion and flooding from the sea and flooding from the river and surface water. If a severe weather event takes place in Weymouth, thousands of homes and businesses could be flooded.

We know sea levels are rising and extreme weather events will happen more often and may be more severe. In 100 years, the average sea level will be more than one metre higher than it is today. This means that all high tides and low tides will be one meter higher, too.

As part of the Weymouth flood and coastal defence project, Dorset Council is working with Dorset Coast Forum, the Environment Agency, Wessex Water and WSP (engineering consultants), to develop an Outline Business Case (OBC).

An OBC is a document required by the UK Government Treasury when government funds are requested. The OBC will investigate costs and benefits of a range of options, then recommend the preferred options to improve Weymouth’s resilience to flood and erosion risks.

This OBC project will build on earlier work carried out by Dorset Council and the Environment Agency exploring possible options for managing flood and coastal erosion risk in Weymouth. The earlier work recommended a phased approach to improve resilience in three stages:

  • up to 2042
  • up to 2062
  • beyond 2062

The OBC being produced will apply for funding for the first phase of work to take the project up to 2042. It will prioritise sections of harbour walls that are currently lower, or close to the end of their design life, and sections identified along the esplanade which are at the most risk of erosion.

Managing impacts associated with any proposed improvements is a key consideration. These include minimising disruption as far as practicable to businesses, harbour operations, residents, and the community of Weymouth, and managing impacts on fisheries and the environment. As part of the project, we will also be delivering exciting new regeneration opportunities for Weymouth.


Reducing flood risk in Weymouth

We’ll be looking at options to address the different sources of flooding in Weymouth. These include:

  • Surface water flooding (this is caused by rain falling directly onto Weymouth but not being able to drain naturally)
  • Flooding from the sea during high tides
  • Flooding from waves crashing over the sea front
  • Flooding from the River Wey

We will also look at how coastal erosion can be managed.


Working with you

We want to work with the community to reduce flood risk to homes and businesses, protecting lives and livelihoods. We also want to ensure that current and future generations of residents, business owners and visitors can continue to enjoy a prosperous Weymouth.

The knowledge and views of local people will help us to identify suitable options for Weymouth that deliver the most benefits to the community while also attracting enough government funding. While government funding decisions have economic considerations, we know that flood defence options are an important investment in the local community and, by working together, we can deliver wider community benefits. This will make Weymouth a better place to live, work and visit.


Have your say

Dorset Council, working together with the Environment Agency and partners, has put together six key objectives for the scheme:

  1. Improve Weymouth’s resilience to flood and coastal erosion now and over the next 100 years.
  2. Improve understanding of how climate change trends will impact Weymouth to help us prepare and adapt for the future.
  3. Identify opportunities for regeneration and growth in the town centre, which could be delivered as part of the scheme.
  4. Enhance the waterfront and pathway around Weymouth Harbour and the Esplanade so that everyone can continue to enjoy and safely use these spaces now, and in the future.
  5. Work closely with partners to improve the natural environment and protect the historic environment of Weymouth.


  • CLOSED: This survey has concluded.

    To continue work to deliver improved protection against flooding and coastal erosion in Weymouth we are putting together a shortlist of potential flood and coastal erosion defence options. To develop these options, we need to understand better how these options and emerging designs for the Esplanade and Harbour may impact residents and businesses in Weymouth.   

    As we continue to identify where, when, and broadly what type of works are needed, we are seeking information around managing potential impacts and maximising positive outcomes for the community as well as the opportunities and issues these may present

    Please help us by taking a few minutes to complete the survey below. 

    Take Survey
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Page last updated: 27 Nov 2023, 09:24 AM