Habitats & Heritage and Thames Landscape Strategy are inviting locals to join them for a practical introduction to river surveying and monitoring along the River Thames on Sunday, 26 April from 1pm - 3.30pm.

This guided session will combine short walks with hands‑on activities to explore river health, local ecology, and environmental history.

Participants will take part in a range of introductory surveying activities, subject to conditions on the day.

These may include water quality testing, freshwater invertebrate sampling, citizen science monitoring, and exploring wet woodland habitats.

Core activities will include:

• Water quality testing using Hanna checkers
• Learning about the history of London's sewer system, including outfall sites and their ecological context
• Participation in the nationwide citizen science programme Big River Watch

This event is suitable for adults with an interest in rivers, nature, and environmental monitoring. No prior experience is required.

The session will take place at the end of Old Deer Park car park. You can check the exact location via what3words.

Habitats & heritage asks you to note that the session will involve walking, standing, and bending.

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Participants are advised to wear wellies or sturdy footwear as some activities will take place close to the water.

If you would like a slightly shorter version or one explicitly aligned to council accessibility or safeguarding standards, this can be revised accordingly.

You can book your tickets here.