The Big River Watch

Survey your local river between 6^th–12^th of September and be part of our UK and Ireland-wide survey of river health.

Did you know? There’s a free and easy way to help your river.

Twice a year we run Big River Watch weeks. where we invite you to take part in a simple citizen science activity that helps build a picture of river health across the UK and Ireland.

The next Big River Watch will take place between 6th-12th September 2024.