All our events and activities are open to communities.
Corporate groups, please book with Thames21 using our corporate volunteering page
London Rivers Week 2024: Poulter Park clean-up
Join our friends South East Rivers Trust during London Rivers Week at Poulter Park to don waders and enter the Wandle to remove litter and...
London Rivers Week 2024: Vital Signs for Healthy Rivers Training
What makes a river healthy? Do you know what signs to look for? Come and learn about how you can spot the vital signs of...
London Rivers Week 2024: Give Your River a Physical Health Check with MoRPh Citizen Science!
Learn all about how to assess river form, features and the dynamic processes that support habitats for aquatic wildlife using MoRPh CSci and how to...
London Rivers Week 2024: River Action Day – balsam bashing
The Meads Dryfield Road, United KingdomJoin us for our Action for Silk Stream monthly volunteering days. They will be held on the last Thursday of each month. This week it...
London Rivers Week 2024: 3 Rivers Clean Up
When: Thu 27 June - 11am – 2pm Where: Ladywell Fields (north) (map) Get on your waders and help clean Lewisham's rivers of litter and...
London Rivers Week 2024: Curator’s Tour in the Exhibition Haunted Ecologies
As part of London Rivers Week 2024, Stanley Picker Gallery Curator Borbála Soós will lead a free lunchtime tour in the current exhibition Haunted Ecologies by artist Thomas...
London Rivers Week 2024: Rivers Clean Up with QWAG
When: Thu, June 27, 6pm – 8pm Where: Lidl - Lee High Road (map) Get on your waders and help clean Lewisham's rivers of litter...
London Rivers Week 2024: 3 Rivers Clean Up at Crofton and Sparrow Woods
Friday 28th June, 10am - 12.30pm. Meet in Petts Wood Recreation Ground Car Park at end of Eynsford Close, Petts Wood, Orpington, BR5 1DP. River...
London Rivers Week 2024: Restoration of the Lower Crane – A River Walk
London Road Twickenham TW1 1AAJoin FORCE for a walk visiting habitat improvements on the River Crane, a river that many know already as a place to walk, relax and...
London Rivers Week 2024: Ravensbourne Photographic Pilgrimage – Source to Mouth
Ceasar's Well Caesar's Well, Keston Ponds, LondonAs part of London Rivers Week, Edwin Quast will be walking the entire length of the Ravensbourne River from its source at Keston Ponds near...
London Rivers Week 2024: Aquatic Invertebrate Survey – Walthamstow Wetlands
In celebration of London Rivers Week 2024 ('London is a river city'), join London Wildlife Trust team for a morning of aquatic invertebrate surveys of...
London Rivers Week 2024: Place-making and the Rivers of Lewisham – Podcasts and Report Launch
Saturday 29th June, 1pm-7pm Various venues across Lewisham (please see event information and tickets for more details) Free but please book here. Join urban sociologists...
London Rivers Week 2024: Inclusive nature cycle – learn about the urgent need for more rain gardens
Join our friends this inclusive nature cycle where everyone is encouraged to come along and learn more about sustainable urban drainage sites and the urgent...
London Rivers Week 2024: Guided Walk – Walthamstow Wetlands
In celebration of London Rivers Week 2024 ('London is a river city'), join our friendly guides for a walk around the reserve where we'll explore...
London Rivers Week 2024: Beckenham Place Park wade and riverbank conservation
Join us for a wade upstream in Beckenham Place Park's Ravensbourne River. Learn about the exciting improvement works in this side of the park by...
London Rivers Week 2024: Guided walk – Wandle Discovery Day
The River Wandle is a fantastic river. Join Wandle Industrial Museum’s John Sheridan on a guided walk along the River Wandle, taking in Wandle Park,...
FULLY BOOKED – London Rivers Week 2024: A Short Introduction To The Thames Estuary – Guided Walk
THIS EVENT HAS NOW SOLD OUT. PLEASE LOOK ANOTHER LONDON RIVERS WEEK EVENT TO BOOK. As part of London Rivers Week, come and join Thames...
London Rivers Week 2024: Ringing in Plastic-Free July
Join OXO Tower Restaurant's beach clean up group for a litter pick on the Thames foreshore, as part of a London Rivers Week 2024 special. Date:...
London Rivers Week 2024: Honouring Mama Osun
Battersea Bridge south side Battersea Bridge Road, Battersea, United KingdomWe enjoyed it so much last year that the Annual Osun River Ritual organisers and Thames21 are again inviting you to this special tribute to...
Cray River – Balsam Blitz
51.44093 N, 0.15166 E 95 Thomas Shearley Court, BexleyHimalayan Balsam, an invasive plant that damages our fragile river systems, it erodes the riverbanks, outcompeting native plants and grows readily in wet condition. Sadly, it has spread quite pervasively down many UK rivers like the Cray in Bexley.
Chiswick Eyot Conservation Days
Chiswick Eyot Draw dock at the bottom of Chiswick Lane where it meets Chiswick Mall around the corner of Fuller’s Brewery, London, United KingdomSign up here > https://book.plinth.org.uk/e/SOFDtIgw70Gohc6XHNvd Thames21 are working to restore Chiswick Eyot. Information about the day: Volunteer and help us to stabilise the island from...
Gallions Park Picnic
Gallions Lake Tesco Mini Store 7-8 Thames Reach, London, London, United KingdomCLICK HERE TO BOOK Join Thames21 at the Gallions Park Picnic Date: Saturday 6th July Time: 1pm - 6pm Location: Gallions Park, Warepoint Drive, London...
Rewilding the Rom – Beating the Balsam Back
Eastbrookend Discovery Centre Car Park Eastbrookend Discovery Centre Car Park, London, United KingdomJoin Thames21 for a day of meaningful impact and community connection as we focus on removing Himalayan Balsam from the banks of the River Rom...
Chinbrook Meadows Wetlands Litter Pick
Chinbrook Meadows , United KingdomThe Chinbrook Meadows wetlands have finally been excavated! After years of planning and two months of construction, the wetlands are almost ready. We need your...
Thames Road Wetland – Habitat Maintenance
Thames Road Wetland Thames Road by River Cray Bridge, Barnes Cray, Crayford, United KingdomVolunteering some time for wetland habitat maintenance is a valuable way to help the environment and safeguard fragile ecosystems. Wetlands are crucial for biodiversity and...