South East Rivers Trust Archives - South East Rivers Trust

River Restoration at Riverside Gardens, Orpington- River Cray

The South East Rivers Trust has embarked on a project to improve a 1.4km stretch of the Upper Cray, running through Riverside Gardens in Orpington and St Mary Cray and ending at the Mill Brook Road upstream of Broomwood Lake.

The project comprises wetland reinstatement alongside habitat enhancements to the Upper Cray, it’s a fantastic opportunity to help restore your local river for the benefit of nature!

Join us to help construct brash wood berms to the River Cray using natural products. Berms are in channel features which narrow a channel and provide changes to the flow to help restore natural processes.

Anyone over 16 years of age is welcome, no previous volunteering or river restoration experience is required and full instruction and supervision will be given on the day.

This is physical work and whilst we will make every effort to provide a selection of different tasks, the work may not be suitable for anyone with back problems or other musculoskeletal injury.

All tools and equipment, inc. steel toe waders and gloves will be provided.

Meeting point: Riverside Gardens. Nearest postcode: BR5 4AB. Exact meeting point will be sent out to all attendees once signed up. Google map HERE

What to bring: Please wear appropriate clothes and footwear, it maybe cold so some extra layers and thick socks are advisable. We will provide hot refreshments but please bring a bottle of water and a packed lunch.

BOOKING ESSENTIAL – please RSVP using the button below and complete the form to secure your spot.

In the event of poor weather, this activity may need to be rescheduled. We will notify all attendees by phone/email if this occurs.

Booking for this event will close at 5pm on Monday 13th January 2025.

Minimum age 16 years old, unaccompanied 16 and 17 year old’s will need written parental consent. Please email volunteering@southeastriverstrust.org for more information.

Please email volunteering@southeastriverstrust.org to:

Find out more information,
Cancel your space if you can no longer make it,
Submit parental consent for unaccompanied16 &17 year old’s.

To read our Health and Safety Guidelines for this event please click HERE.

Photos and video footage will be taken at this event and used by the Trust for promotional purposes (including but not limited to printed materials, social media, newsletters and the website) and potentially shared with our external partners and funders. From time to time, external media agencies could also take photos, film or record our events.

The Trust’s lawful basis for processing this is “Legitimate Interests” under the General Data Protection Regulations. As an individual you have rights. If you wish for SERT to stop processing this data for you, please talk to a member of staff or email info@southeastriverstrust.org.

To read our Privacy Policy and see how we use and look after the information you provide when booking your spot at our events please click HERE.

Water Vole Survey Community Event for the Upper Beult Project – River Medway

What are we doing?

Come and join us in Shadoxhurst, Kent, to learn about our Upper Beult wetland creation project and help us survey for Water Voles. These large voles, which are only found along grassy banks of suitable watercourses, were once widespread across much of the UK and Moat Farm is still home to them.

We will head out across the picturesque site and look for water voles, burrows, latrines and feeding signs to better understand their presence and distribution.

Meeting point: Moat Farm, Shadoxhurst, Kent TN26 1LY. Google map HERE, What3Words: ///hedgehog.chosen.motorist

Parking available on site

What to bring:

Comfortable, sturdy shoes. Hiking boots or wellies are both suitable.
Weather appropriate clothing. Please bring a waterproof coat and extra layer if it’s chilly or a hat and suncream if it’s likely to be hot.
A bottle of water and a reusable coffee cup. We will have water, refreshments and cups available but you may want to bring your own as well.
A packed lunch.
Outdoor or gardening gloves if you have, if not we will have some spare.

Plan for the day:

10:00 – Meet, look out for the SERT flag!

10:15 – Introduction to SERT, H&S and overview of the day. Tea and coffees will be available.

10:45 – Get kitted up and head down to the river to start the water vole survey.

12:15 – Lunch.

13:00 – Continuation of water vole survey.

14:00 – Finish

BOOKING ESSENTIAL – please RSVP using the button below and complete the form to secure your spot.

Booking for this event will close at 5pm on Wednesday 2nd October.

Please email volunteering@southeastriverstrust.org to:

Find out more information,
Cancel your space if you can no longer make it.

To read our Health and Safety Guidelines for this event please click HERE.

To read our Privacy Policy and see how we use and look after the information you provide when booking your spot at our events please click HERE.

Information and Activity Stand for World Rivers Day- Stepping Stones, Box Hill- River Mole

Join us at the Stepping Stones across the River Mole at Box Hill in Surrey on World Rivers Day, Sunday 22nd September, to learn more about the River Mole and what we are doing to help it thrive.

We will also have activities for children including a river dipping table, crafts and a river themed scavenger hunt. 

We will be joined by volunteers from River Mole River Watch who do extensive water quality testing along the River Mole which shows a true picture of the stresses the river is under as well as successful actions which have taken place due to their results.

Our stalls will be set up in by the Stepping Stones if they are passable, if the river level is too high we will be set up by the bridge.

Stepping Stones Walk, London Rd, Dorking RH5 6AE. Google Map what3words ///belly.yarn.silver

There is no need to book for any of the activities, just come along on the day. 

Wetland Project Tackling River Pollution Receives Official Visit

Posted on 1 August 2024 by Sara Marshall

We recently welcomed the Secretary of State for Environment, Food and Rural Affairs Steve Reed MP, the Chairman of the Environment Agency Alan Lovell, and DEFRA Director of Water Sebastian Catovsky to our Chamber Mead wetlands. During their visit, the South East Rivers Trust team highlighted the multiple benefits of working with nature to tackle river pollution and other environmental issues.

Promoting Nature-Based Solutions

During the visit, we explained how nature-based solutions significantly reduce river pollution. Moreover, we found the new Government’s interest in these innovative approaches encouraging. To help our rivers recover more widely, we emphasised the need for the Government’s support to rapidly scale up these projects.

Environmental leaders visit Chamber Mead wetlands © South East Rivers Trust

Dr. Bella Davies, CEO South East Rivers Trust, said:“We are delighted to host the Secretary of State at the Chamber Mead wetland today. The wetland tackles sewage and urban road runoff pollution before it enters the Hogsmill River, which is a rare chalk stream, one of around 220 in the world, supporting a unique set of species dependent on the chalk-purified water. We are glad that the new Government sees the wide benefits of nature-based solutions and we urge them to take action to break down barriers to these kinds of projects and support organisations such as ours to deliver more at scale in the future.”

Governments Commitment to Water Quality

We’re pleased to hear that the new Government acknowledge the importance of improving water quality, which was highlighted in the King’s Speech, with plans for water industry reform. However, we emphasised the need for ambitious action on agricultural pollution, road run-off, and over-abstraction. We delivered this message directly to Steve Reed MP during his visit.

Exploring Chamber Mead Wetland

Steve Reed MP toured the Chamber Mead wetland with Rivers Trust CEO Mark Lloyd and SERT CEO Dr. Bella Davies. Alan Lovell, Chair of the Environment Agency, and Sebastian Catovsky, DEFRA Director of Floods and Water, also joined the visit. Chamber Mead demonstrates how nature-based solutions can vastly improve our waterways and combat river pollution. We have redirected the water from the Green Lanes Stream through a sediment trap and two wetlands instead of letting it run straight into the Hogsmill River. At the other end, we connected the wetland to the Hogsmill River downstream of the stepping stones. As they develop, the wetlands will provide diverse habitats and amenities to the Hogsmill Local Nature Reserve and improve water quality for a 200-metre section of this rare chalk stream.

Three people stand beside the Chamber Mead wetland testing the water quality. — Steve Reed MP on the waters edge at Chamber Mead wetlands © South East Rivers Trust

Impact on the Hogsmill River

The Chamber Mead wetlands help conserve the Hogsmill River, a rare chalk stream. This project cleans 250 million litres of water through natural systems, effectively combating pollution. The wetlands are part of a broader partnership between the Rivers Trust and The Coca-Cola Foundation.

Looking Ahead

The visit underscored the importance of these projects and the need for continued support. With the backing of the Government and our partners, we can achieve significant progress in restoring and protecting our rivers.

For more information on our projects and how you can get involved, visit the South East Rivers Trust website. Join us in making a difference for rivers across the South East.

Upper River Mole to benefit from £100k Natural Flood Management Investment

Posted on 1 August 2024 by Polly

The South East Rivers Trust is pleased to announce a new natural flood management (NFM) project with funding provided by London Gatwick.

The upper River Mole is characterised by its flashy nature. As a clay-based catchment, an impermeable geology, the river is prone to both flooding during wet periods and drying up during dry periods. Climate change is expected to only exacerbate these issues. The river also faces pressure from pollution and a lack of adequate habitats for river wildlife.

NFM in action - holding water back in the landscape — NFM holding water back © South East Rivers Trust

This project aims to address these challenges through a series of NFM measures. These techniques, including tree planting, leaky woody structures, and wetland creation, work to slow the flow of water through the landscape, increasing the its natural retention of water, to both reduce the risk of flooding downstream during times of heavy rainfall and maintain river flows during drought periods.

A key component of the project is the implementation of a “stage zero” restoration, which involves reconnecting the river’s headwaters with their floodplain. In other words, turning back the clock to a time before human intervention. This approach not only enhances natural flood protection but also improves resilience during low flow periods, reduces diffuse pollution, and creates habitats to increase biodiversity.

Dr Chris Gardner, Head of Science and Partnerships at SERT, said: “Natural flood management is a crucial technique for us at SERT, as it harnesses and restores the natural processes our rivers depend on. We’re delighted to have London Gatwick support for this project and are eager to see the positive impact we can achieve on the ground.”

The funding from London Gatwick comes from the airport’s efforts under their sustainability policy, Decade of Change, and remains focused on what matters: increasing the emphasis on people and reducing emissions. London Gatwick is working to support and invest in local communities, continue transition to net zero for Scope 1 and 2 emissions by 2030 and reduce impact on the local environment and waste.

Ian Waghorn, Principal Environmental Water Engineer at London Gatwick, said: “We are thrilled to be working with SERT, this collaboration will provide real improvements to the Upper Mole catchment. Working with our partners is just one aspect of our ambitious water targets for this decade.

“We are making significant investments in our own water systems at London Gatwick. In our first Decade of Change we reduced water consumption from 30 litres per passenger to 15, we are now aiming to halve this figure again to 7.5 litres. This will be achieved by harnessing the capabilities of our existing infrastructure to produce a non-potable water source for toilet flushing.”

The first year of the project will focus on conducting scoping work to generate feasibility studies, engaging with local landowners, and establishing baseline surveys across the sub-catchment to pave the way for delivery in future years of the collaboration. We’re excited to get to work on this project, so watch this space!

Volunteers test pollution levels on River Mole

Posted on 21 February 202421 February 2024 by Ian Lamont

Volunteers are now collecting vital data about the health of the River Mole, after being given water quality testing kits as part of our Mending the Upper Mole project.

We are thrilled to have teamed up with River Mole River Watch, a local charity group which shares our aim to bring the river back to life for wildlife and people to enjoy.

Lewis briefs the volunteers on how to use the kits to test for pollution on the River Mole

Having picked up their kits this week, the citizen scientists will now be carrying out monthly tests for the next two years, to give us a baseline of pollutants. The volunteers will be measuring 10 aspects of river health, including levels of phosphate, ammonia, nitrate, conductivity, pH for acidity and temperature. All of this data is crucial to help us understand how to improve the river.

Lewis Campbell, SERT’s Catchment Manager in charge of the Mending the Upper Mole project, said: “It is fantastic to have a group of volunteers who want to get into the nitty gritty of looking after their local river by carrying out water quality tests to assess pollution levels. We know River Mole River Watch play an active part in caring for their stretch of river and it is brilliant to team up with them as they do so.

“The volunteers will be helping the Mending the Upper Mole project to assess the health of this section of river in a way that has not been done before. The results will allow us to highlight hotspots of pollution, helping the catchment partnership to implement strategies to combat pollution and help the catchment thrive. We have already added gravels to the river at Maidenbower to help fish and we are working on a number of other projects to improve the waterway for wildlife.”

Simon Collins, one of the Trustees of River Mole River Watch, said: “Our fantastic River Mole River Watch volunteers have been collecting water quality test data across the whole catchment every month for a year. Partnering with SERT has been very helpful indeed and we are excited by the Mending the Upper Mole project as it focusses on water quality and pollution in the Upper Mole which is a particularly sensitive part of the river catchment area. More data will help to identify hot spots and areas we can work with SERT to improve.”

The River Mole catchment partnership is co-hosted between SERT and Surrey Wildlife Trust and the vision is set out on the river network’s Storymap website. The Water Framework Directive status for the water quality in the area being assessed is rated “poor”. The area being measured starts close to the source of the Stanford Brook and encompasses much of the Gatwick Stream.

So what are we measuring and why?

The water quality testing kits that will be used by volunteers

Self-contained testing kits will allow volunteers to monitor levels of chemicals such as phosphates and nitrates. High levels of both nutrients lead to algae growing in the water, depleting oxygen levels and obstructing light making the river unsuitable habitat for other wildlife. High phosphate readings would indicate pollution has likely occurred from untreated sewage – or domestic, misconnected plumbing that bypasses sewage treatment works and goes straight into rivers form surface water drains, known as outfalls.

Another chemical tested for will be ammonia, high levels of which would suggest pollution is coming from either sewage or agriculture. Conductivity measurements will also be taken to identify the presence of salts and heavy metals, indicators of road run-off washed into the river. A temperature reading will also be taken and higher readings are likely to be an indication of spillages from outfalls.

Volunteers with their kits — Volunteers from River Mole River Watch receive water quality testing kits to test for pollution

Natural England funds will bring back water voles, eels and trout to the Hogsmill

Posted on 21 September 2023 by Ian Lamont

The South East Rivers Trust (SERT) has been awarded £393,000 as part of Natural England’s Species Recovery Programme, which aims to support targeted action to recover the UK’s most endangered species.

On 14th September, 2023, Natural England chose SERT to host the scheme’s launch at the Hogsmill Stepping Stones in Ewell, Surrey, where the fortunes of water voles, eels and trout will be boosted by the project.

A total of 63 projects across the country have been awarded a share of £14.5 million by Natural England to help recover 150 species nationwide. Following a competitive application round, the money will be used by environmental charities, wildlife organisations, local authorities and charities to deliver the Nature Recovery Network.

Launch of the WET Hogs project — Citizen Zoo demonstrate a water vole realise box at the launch of the Natural Species Recovery Programme

The funding supports propagation, captive rearing, translocations, research and solution-trialling to find the best approaches to enable endangered wildlife to survive and flourish.

Some of the UK’s most iconic river wildlife has been in severe decline for decades, but now thanks to a generous grant awarded to SERT by Natural England, outcomes for rare and endangered wildlife and their habitat are about to improve on the Hogsmill river in South West London.

The WET Hogsmill project led by the South East Rivers Trust, will improve the habitat of the Hogsmill river, a chalk stream in South West London. There are only around 220 chalk streams worldwide meaning that this is an exceedingly rare and special habitat. The project will reintroduce Water Voles onto the river and create new habitats for both European Eel and Brown/Sea Trout. The project will run until Spring 2025.

Water quality testing on the Hogsmill at the Natural Species recovery programme launch

Co-CEO of SERT, Dr Bella Davies said “We are thrilled to have been successful in our application to Natural England’s Species Recovery Grant to support the recovery of water voles, eels and native wild trout which have become near extinct on the Hogsmill river in South West London. The Hogsmill is a rare urban chalk stream meaning that it’s important for nature and an important resource for people too.

“Our project will restore river habitat and create backwaters where fish can take refuge from pollution by creating wetlands to improve water quality which will help reintroduce Water Voles which were once prevalent on the river. We are excited to see this much needed work begin on the ground to bring Water Vole, European Eel and Brown/Sea Trout back to the Hogsmill.”

The Hogsmill river is the first tributary of the non-tidal river Thames and a chalk stream making it a UK Biodiversity Action Plan Priority habitat. Despite its rarity and importance, the Hogsmill has suffered a wide range of pressures leading to decline and loss of habitats and species over the last century and beyond.

Water Vole numbers have declined sharply since the end of the 20th Century making them currently the UK’s fastest declining mammal with a 97% decrease in population. Once ubiquitous and found in their millions, they are now considered to be on the brink of extinction. Water Voles were once prolific on the Hogsmill but became locally extinct in 2017.

Partnering with Citizen Zoo, a conservation charity, SERT will release 150 Water Voles across two sites on the Hogsmill, supplementing 101 Water Voles previously released by Citizen Zoo in 2022. This will help to increase the genetic diversity of the population.

European Eel are also critically endangered with levels declining by 90-98% from historic figures. Eels migrate up rivers during their life span and recent surveys on the upper Hogsmill recorded just one eel in 2016 and three in 2022. The WET Hogsmill project will support the creation of a large wetland and backwater while also creating a more complex instream habitat which is favoured by European Eel.

Trout have been extinct on the Hogsmill since the 1900s, owing to 19 predominantly obsolete weirs barring their passage, and preventing them from reaching critical spawning grounds in the river’s headwaters. Over the past decade SERT has made 18 of these weirs passable for fish and other species by either removing them or installing technical fish passes or easements. In 2024 the final remaining weir will be made passable for multiple fish species including Brown/Sea Trout and European Eel. By spring 2025 these fish will once again be able to access and migrate throughout the whole river for the first time in over 200 years.

SERT will provide a wide range of complementary community education and engagement activities for members of the public, schools and local businesses. Planned activities include installation of an interactive nature trail, indoor and outdoor education sessions, and community talks to help local people and businesses understand how they can help protect rivers and wildlife.

There will also be several opportunities to volunteer. Those interested to learn more about the project and volunteering activities can sign up to our newsletter or bookmark our events calendar for more information.

Watch our Co-CEO Dr Bella Davies explain how the project will help species in the Hogsmill.

Sign open letter to political parties to support nature

Posted on 26 July 20233 August 2023 by Ian Lamont

River lovers are being urged to sign an open letter calling on all political parties to adopt a five-point plan for wildlife in their manifestos for the next General Election, likely to take place in 2024.

The Rivers Trust movement has joined an 80-strong coalition of partners to support the Nature 2030 Campaign. It is led by the Wildlife and Countryside Link and supported by celebrities including television personalities Steve Backshall and Chris Packham.

Research shows that the UK has become one of the most nature-depleted countries in the world, with more than one in seven native wildlife species facing extinction.

The campaign outlines that in 2022 sewage was discharged for more than 2.4 million hours across England, Scotland and Wales, accounting for more than 389,000 sewage spills. Commitments were set in 2021 to protect 30% of land and sea for nature by 2030, but there’s a long way to go to meet these targets. With only seven years to go, just 3% of land and 4% of sea have this protection. We need stronger environmental leadership and the Nature 2030 campaign demands it.

Wetland restoration scene — A wetland restoration scene from our nature based solutions safari © South East Rivers Trust

Thousands of people have already signed the letter, which was launched at Westminster in July.

As one of the largest regional rivers trusts, the South East Rivers Trust (SERT) is urging supporters to back the campaign, which has five key asks for political parties:

Double the wildlife-friendly farming budget to £6bn for ambitious farm improvements and large-scale nature restoration
Make polluters pay for nature restoration by requiring big businesses to deliver environmental improvement plans and funding to counter damage
Create green jobs on a large scale, including setting up a National Nature Service delivering wide-scale habitat restoration
Increase protection and funding for wildlife sites by creating a Public Nature Estate to fulfil the promise to protect 30% of the land and sea for nature by 2030
Set up a new law guaranteeing a right to a healthy environment, establishing a human right to clean air and water plus access to nature, plus building nature into decision making

Hester Liakos, co-CEO of SERT, said: “Rivers are at the heart of the battle to restore nature. Our work with local communities, farmers and landowners demonstrates the positive difference that nature based solutions and natural flood management can make in improving the health and biodiversity of rivers. But to make this difference on the scale that nature truly needs requires more funding and greater commitment and leadership from Government – so we’re asking our supporters to sign this open letter to demand action from all political leaders.”

Our work backed by either EU or the UK Government includes PROWATER and Environmental Land Management Schemes.

Tessa Wardley, Director of Communications and Advocacy at the Rivers Trust, said: “The public are rightfully outraged by the state of our rivers and we need political parties to make firm commitments towards their recovery, which are then backed up by action. Delivering the Nature 2030 policies would significantly improve the health of our rivers, which are absolutely core to tackling the biodiversity, climate and wellbeing crises we face as a nation and planet.”

Click here to sign the Nature 2030 letter today