GET INVOLVED

There are so many ways to get involved with helping to make the River Colne a nicer, healthier place for all.

Take a look below to discover what events and volunteering opportunities available.

If you would like information in another language or have other Web Content Accessibility needs, please email emily.evans@groundwork.org.uk

Wildplay Summer Sessions, Various Dates Available, Oxhey Park

Join Groundwork East during the Summer Holidays to take part in FREE nature play sessions.

Learn more about your local greenspace and the River Colne through scavenger hunts, natural art and play.

Suitable for ages 3-9 with their parents/guardians. Younger and older siblings are welcome.

Book your free space here

River Colne Litter Pick, 12 & 27 August 2026, Tesco Extra (Watford)

Join Groundwork East for a community litter pick along the River Colne. Together, we'll help keep the local environment clean, prevent rubbish from entering the rare chalk stream, and learn about the river's fascinating history and heritage along the way.

All equipment will be provided
Walk up to 1 mile
Suitable for ages 16+ (with a guardian) and adults 18

Book your free space

Groundwork's Green Doctors

Groundwork’s Green Doctors provide free, one-to-one energy efficiency and money-saving advice for Hertfordshire households. Get practical guidance on reducing energy use, draught-proofing, and understanding bills. They also offer referrals to local services like debt advice and food banks.

Eligibility: over 65s, households with children under 5, benefit recipient, people with physical or mental health conditions

Rediscovering the River Colne: Walk Leaders

Do you love Watford and enjoy sharing stories? We’re looking for passionate people to become paid walk leaders for new community walks along the River Colne. You don’t need to be a historian, just someone who enjoys connecting with people, telling stories, and inspiring pride in our community. Whether it’s nature, history, or local life, your enthusiasm can bring the river’s story to life. Join us and help others see Watford in a new way.

River Lea clean up RiverLUTiON (3)-2.jpg

Rediscovering the River Colne: Corporate Team Building and Health Walks

Multiple sites across Watford, 2025/26.

As part of the Rediscovering the River Colne, there are opportunities for businesses to get involved with practical conservation, invasive species clearances and litter picks. Enquire today to discuss pricing and availability of these opportunities.

Rediscovering the River Colne: Green Gym Conservation

Held at Watford Rugby Club on Tuesday and Thursday from 10am-1pm. Green gym is a volunteer-led group who run a range of conservation activities along the River Colne. Green Gym is free for anyone to join in, and make a difference in their local community. The activities suit all ranges of fitness.

Rediscovering the River Colne: Friends of Oxhey Park

Oxhey Park, Second Saturday of each month, 10.30am, March-November (except August). Friends of Oxhey park are a volunteer group who aim to make the park a safer and more welcoming space for families and anyone who wishes to enjoy their local area. Friends of Oxhey Park are a social group who welcome anyone that would like to take part.

Learn more

Rediscovering the River Colne: Oxhey Village Walking Group

Oxhey Village Green, Every Monday at 6:30pm, Get outside and meet with a group of like-minded people to explore the local area! This enthusiastic and social group, open to people of all abilities, meet each Monday to walk to 5k (or however far you can go)!

Learn more