Groundwork is looking for local volunteers to keep a watchful eye on the River Colne in Watford and report any problems you might see while you're walking along the river.

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This will be a short evening walk along the river to get comfortable with using the app, and some real-work experience identifying invasive species in the wild - we will be targeting Himalayan Balsam at this site.

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

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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.

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.

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.

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.

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)!

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