The Big River Watch 2026

Our rivers are part of everyday life here in Ireland, from the streams we pass on a walk to the coastlines we treasure. But understanding their health isn’t always straightforward. That’s where The Big River Watch 2026, led by The Rivers Trust, comes in.

This simple citizen science event invites people across Ireland and the UK to spend just 10 minutes at their local river, stream, lake, or coast and record what they see using a free app. No experience, no training, just a moment of your time and a bit of curiosity.

Why It Matters

Our rivers face ongoing pressures from pollution and runoff to habitat loss. At the same time, there are still gaps in data about what’s really happening on the ground. The Big River Watch helps fill those gaps. By taking part, you’re helping to build a clearer picture of water health across entire catchments. These real-world observations support better decisions, stronger protection, and more informed action. Put simply your 10 minutes can help shape the future of our rivers.

How It Works

Taking part is as easy as it gets:

  • Download the Big River Watch app
  • Visit your local river, stream, lake, or coastline
  • Spend 10 minutes observing
  • Record what you see in the app

That’s it.

You’ll be asked simple questions about things like water clarity, wildlife, pollution, and your surroundings. It’s designed to be quick, accessible, and open to everyone.

For more information go to The Big River Watch | The Rivers Trust