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.
Our rivers are far from healthy. They're polluted with sewage, plastic, chemicals and nutrients, and just 15% of river stretches in England are in good overall health. This isn't good enough.
When it comes to restoring our rivers, we need even more information about how they're doing. You can help us identify and locate the issues.