Open garden gate © Getty Images

Open garden gate © Getty Images

Open Chalk Streams: St Mary Bourne

Location: The Green Lodge, Gangbridge Lane, St Mary Bourne, Hampshire, SP11 6EP
Come and explore our precious local chalk streams! Visit hidden places and see familiar ones in a whole new light - what will you discover?

Event details


10:00-12:00 or 13:00-15:00
A static map of Open Chalk Streams: St Mary Bourne

About the event

Join us for a guided walk around this lovely country garden. You'll see a great example of an intermittent chalk stream (or 'winterbourne') in its natural dry phase, and find out what this dramatic transformation means for wildlife.

Come along to hear about winterbourne habitats, water meadow heritage, the garden's plant life, and how to manage a small stretch of chalk stream. You can also learn how to identify freshwater invertebrates and have a hunt for the resident toads!

This event is part of Open Chalk Streams, a project within the Watercress and Winterbournes Landscape Partnership Scheme. We're protecting, enhancing, and celebrating the Rivers Test and Itchen headwaters - learn more.

Booking is essential for this event - we cannot admit anyone who has not booked a ticket in advance. Numbers are limited to ensure everyone's safety, so if you can no longer come please contact us as soon as possible on


Key information:

Age range: 7+ (under 18s must be accompanied by a parent or guardian).

Accessibility: Suitable for those with limited mobility, but not for wheelchair users.

Meeting point: The main house of the Green Lodge property, which can be accessed from the Stoke end of Gangbridge Lane. Use what3words code signature.lengthen.hook.

Car parking: Available on site.

Other information: There is limited shade on site, so a sun hat and water are recommended. No toilets are available, but public toilets can be found near the local shop in St Mary Bourne.


Covid-19 safety:

By attending this event, you agree to adhere to the latest Government guidance on Covid-19. We’re following the latest guidance and taking measures to help ensure the safety of everyone involved.

A briefing will be provided at the start of each event, to ensure you understand the measures in place and your responsibilities relating to them. If you don’t meet these responsibilities, we reserve the right to stop the event or ask you to leave. If any of our hosts, staff, or volunteers becomes unwell within two weeks of the event, we’ll inform you straight away.




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