About the project
Enfield Council is working with the Environment Agency to look at ways to bring the Pymmes Brook in Arnos Park back to a more natural state and help reduce the risk of flooding.
The brook runs for about 800 metres along the side of the park. Over time, it has been straightened and put into a concrete channel to make space for buildings and other infrastructure. This has made it harder for fish and other wildlife to move along the river. It also means that many homes nearby are at increased risk of flooding – a problem that’s likely to get worse with climate change.
We’re exploring the idea of creating a more natural river channel through the park with the aim of:
- improving habitats for wildlife
- making the park more enjoyable for visitors
- storing floodwater during heavy rain to reduce the risk of flooding
This project is part of our wider efforts to make the area more resilient to climate change and improve the natural environment.
Current project status
We’re currently carrying out a feasibility study funded by a grant. This study is looking at:
- how to improve the environment
- ways to reduce flood risk
- how to improve water quality
- the wider impact of the project
So far, we’ve spoken with local groups like the Friends of Arnos Park and held a public event in July 2024. The feedback we received is helping shape the study.
Right now, we’ve paused engagement while we carry out more detailed flood modelling. This will help us understand the potential benefits and guide the design of the project.
No final decision has been made yet. Once we have a preferred option, we will hold a full public consultation.
Frequently asked questions
Has a decision been made?
No. We’re still in the early stages. We need to complete flood modelling and other investigations before making any decisions. A public consultation will happen before anything is finalised.
Why not improve the river where it is?
The current river is in a concrete channel, surrounded by trees and buildings, which makes it hard to restore. Creating a new, winding channel in a more natural location would improve wildlife habitats and allow space for floodwater. Historic maps show the river has already been changed in the past.
Will this make the park less safe?
No. The council’s Community Safety team will check the designs to make sure people can see clearly through the park and that no hidden areas are created. The aim is to keep the park safe and welcoming, and to encourage more people to use it in a positive way.
Who will look after the river if it is restored?
The design will aim to keep maintenance low, using hardy plants and natural banks. Enfield Council will continue to maintain the area, with help from external funding and community groups where possible.
Will this reduce the amount of green space in the park?
The new river would avoid the most-used areas of the park. It would be up to 8 metres wide, but most of the open grassy areas will stay the same and remain available for recreation.
Will the project improve water quality?
Yes. The brook currently suffers from poor water quality. The project aims to improve this by introducing natural features that help filter the water and support wildlife. Thames Water and the Environment Agency are also working to reduce pollution upstream.