Take part in this autumn's Big River Watch and help survey your river from 18–24 September 2026.
Our beautiful and vital rivers are in crisis, and every bit of data helps us plan how to restore and protect them. Big River Watch is your invitation to connect with your local stretch of river and stand up for wildlife.
To play your part as a citizen scientist, download the free Big River Watch app, spend 15 minutes by a river between 18–24 September, and complete the short survey to record what you see — from wildlife and water colour to signs of pollution.
You'll need the free app to take part! Download it before you set off to complete your survey:
Across the south of England, you can find wonderful sources of crystal-clear water better known as chalk streams.
Accessing Norfolk’s rivers and countryside
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