1:30-3:30pm. Water Quality - let's team up and clean up the River Brent! - an exciting programme of talks and chance for all to share their knowledge and ideas.

Everyone in the Brent Rivers and Valleys catchment is invited and very welcome to share their experiences and suggestions for improving WQ and reducing pollution in the River Brent and its tributary brooks and streams.

Let's work together to help local wildlife thrive and more people to enjoy their riverside environments!

10:00am – 12:30pm on Monday 25th February 2019 at Harrow Council, Civic Centre, HA1 2XY


Pollution can find its way into urban rivers via surface water outfalls (drains) as a result of misconnected plumbing.

The Brent Catchment Partnership is looking for volunteers to help conduct Outfall Safari surveys throughout the Upper Silk Stream in Harrow and Barnet. This involves surveying stretches of the river to map and record the impact of outfalls with the help of a mobile app. 

All training and equipment will be provided. Please click here to register for this event.

"...surveying outfalls and sewage is strangely compelling and fun!.." (Outfall Safari surveyor, 2019)

When: Saturday 12th January 2019  09:00 to 12:00

Where: Costons Brook, Perivale Park

Help give Costons Brook, part of the River Brent catchment a Winter Clean! The Gurnell-Greenford Greenwayers welcome local residents and active Londoners to come and join them for a river clean and #BeTheChange. Read more...

October 16-18th 2018 - 10:00am - 4:00pm

Join London Wildlife Trust's Water for Wildlife team and Ealing rangers for a series of workdays installing new habitat features on the River Brent in Hanwell, Ealing. Creation of a new and improved backwater will make the river more resilient to pollution events, provide homes for a variety of wildlife and help to make the river greener and more attractive. Read more...

October 9-10th @ 10:00 am - 4:00 pm

Free event - removing toe board from the Dollis Brook. Join Thames21 and help increase biodiversity of your local river by removing toeboards.  Read more...

October 13th @ 10:00 am - 1:00 pm

Free community event. Join Thames21 to spruce up Rushgrove Park and clear plastic litter from the Silk Stream, flowing through the park. Read more...

October 24-25th @ 10:00 am - 1:00 pm

Join Thames21 and help increase biodiversity of the Dollis Brook by planting along the river channel margins.  Read more...

When: Sunday 1st July 2018

Where: Welsh Harp Reservoir, West Hendon entrance, Edgware, London NW9 7EZ

Why: Join us at the wonderful Welsh Harp SSSI Reservoir on the River Brent to end London Rivers Week with an active fun day combining Himalayan Balsam pulling plus plastic litter picking. Read more...

When: Wednesday 27th June 2018

Where: Welsh Harp Environmental Centre, Birchen Grove, NW9 8RY

Why: Learn about how the shape and dynamic structure of rivers support habitats for aquatic wildlife and how the MoRPh health check can help guide decisions for river enhancements. This event will provide citizen science training in the Modular River Physical (MoRPh) Survey habitat assessment method.

Booking is essential! Please sign up via Eventbrite HERE

For more information contact: Lucy on 07523 512848  or email: This email address is being protected from spambots. You need JavaScript enabled to view it.

When: 11:00 - 1:30pm Wednesday 27th June

Where: Watling Park, Barnet

Why: Join Thames21 and volunteer to help conserve the Burnt Oak Brook. This river, which leads to the River Thames via the River Brent is being harmed by a variety of different plastic pollution and other items of litter. Come join us, and local volunteer groups to enhance this river preventing litter reaching the Thames. Read more...

Design by LTD Design Consultants and build by Garganey Consulting.