Datchet to Hythe End Flood Improvement Measures

Map showing study area the River Thames and surrounding area including Datchet, Horton, Wraysbury and Old Windsor

Project update

In late 2024, we held public events to present two shortlisted options to reduce flood risk in the area. The project team has been working to calculate the potential costs and benefits of both options.

We had committed to providing an update on our recommendations in 2025; however, there have been recent changes to government flood funding arrangements and we’ve needed time to carefully consider these and what opportunities may be available.

We are continuing our work and intend to provide an update on the next steps for the project early in the New Year.



What is the Datchet to Hythe End Flood Improvement Measures project?

This project is being run in partnership by the Environment Agency and the Royal Borough of Windsor and Maidenhead, to explore ways to reduce flood risk to communities in the Datchet, Horton, Wraysbury and Old Windsor area.

We started by looking at a long list of ways to reduce flood risk. We assessed each of these separately to see if they would be practical and helpful in reducing flood risk. We found 2 options that we will continue to investigate further. These are flood walls and embankments, which we are referring to as option Purple and a flood relief channel which we are referring to as option Orange. We are also exploring resilience measures including, but not limited to, Property Flood Resilience measures.

Please use the links below to find out more about the scheme.

You can also learn about the scheme by watching our video:



Community Liaison Group

We have set up a Community Liaison Group to provide a link to local communities, with the first meeting held in February 2024. The group is formed from representatives of the local communities within the study area who came forward at the November 2023 drop-ins. If you would like to know more about the Community Liaison Group, or have other questions, please contact us at THM.Schemes@environment-agency.gov.uk.




The Maidenhead, Windsor and Eton Flood Alleviation Scheme

Although the Datchet to Hythe End Flood Improvement Measures project is a stand alone scheme, it may be helpful to know about other schemes in your area. One of the most prominent locally is the Maidenhead, Windsor and Eton Flood Alleviation Scheme, of which the Jubilee Flood Relief Channel is part.

The Maidenhead, Windsor and Eton Flood Alleviation Scheme is made up of a combination of different elements in to reduce flood risk in the area. These include

  • Cookham - flood walls, flood gates and earth embankments
  • North Maidenhead - flood walls and an earth embankment
  • The Jubilee Flood Relief Channel

These were designed to work together to reduce the risk of flooding to approximately 3,000 properties in Maidenhead, Windsor and Eton. The Jubilee Flood Relief Channel is not designed to reduce flood risk to communities upstream or downstream of the scheme. It does not adversely impact communities downstream.

To find out more about the scheme, please visit the Jubilee Flood Relief Channel website.

Project update

In late 2024, we held public events to present two shortlisted options to reduce flood risk in the area. The project team has been working to calculate the potential costs and benefits of both options.

We had committed to providing an update on our recommendations in 2025; however, there have been recent changes to government flood funding arrangements and we’ve needed time to carefully consider these and what opportunities may be available.

We are continuing our work and intend to provide an update on the next steps for the project early in the New Year.



What is the Datchet to Hythe End Flood Improvement Measures project?

This project is being run in partnership by the Environment Agency and the Royal Borough of Windsor and Maidenhead, to explore ways to reduce flood risk to communities in the Datchet, Horton, Wraysbury and Old Windsor area.

We started by looking at a long list of ways to reduce flood risk. We assessed each of these separately to see if they would be practical and helpful in reducing flood risk. We found 2 options that we will continue to investigate further. These are flood walls and embankments, which we are referring to as option Purple and a flood relief channel which we are referring to as option Orange. We are also exploring resilience measures including, but not limited to, Property Flood Resilience measures.

Please use the links below to find out more about the scheme.

You can also learn about the scheme by watching our video:



Community Liaison Group

We have set up a Community Liaison Group to provide a link to local communities, with the first meeting held in February 2024. The group is formed from representatives of the local communities within the study area who came forward at the November 2023 drop-ins. If you would like to know more about the Community Liaison Group, or have other questions, please contact us at THM.Schemes@environment-agency.gov.uk.




The Maidenhead, Windsor and Eton Flood Alleviation Scheme

Although the Datchet to Hythe End Flood Improvement Measures project is a stand alone scheme, it may be helpful to know about other schemes in your area. One of the most prominent locally is the Maidenhead, Windsor and Eton Flood Alleviation Scheme, of which the Jubilee Flood Relief Channel is part.

The Maidenhead, Windsor and Eton Flood Alleviation Scheme is made up of a combination of different elements in to reduce flood risk in the area. These include

  • Cookham - flood walls, flood gates and earth embankments
  • North Maidenhead - flood walls and an earth embankment
  • The Jubilee Flood Relief Channel

These were designed to work together to reduce the risk of flooding to approximately 3,000 properties in Maidenhead, Windsor and Eton. The Jubilee Flood Relief Channel is not designed to reduce flood risk to communities upstream or downstream of the scheme. It does not adversely impact communities downstream.

To find out more about the scheme, please visit the Jubilee Flood Relief Channel website.

Page last updated: 19 Dec 2025, 11:33 AM