Big River Watch Data Explorer
Find out what Big River Watch-ers recorded in their river health surveys in the UK and Ireland.
Twice a year, we hold Big River Watch events. Over the course of a week, we encourage members of the public to download our free app, visit their local river, and spend a few moments recording what they see and how they feel.
Use the dashboard below to explore the data sent in across the UK and Ireland, during all of our Big River Watches.
The map below works best on desktop or tablet. Exploring on mobile? Click here for the full-screen data dashboard.
Big River Watch Dates
Autumn 2025: Data displayed was collected between 19-25th Sept 2025
Spring 2025: Data displayed was collected between 25th Apr - 1st May 2025
Autumn 2024: Data displayed was collected between 06-12th Sept 2024
Spring 2024: Data displayed was collected between 03-09th May 2024
Autumn 2023: Data displayed was collected between 22-28th Sept 2023
Download the data
The full Big River Watch dataset can be accessed here.
Local Trusts
We've also created a version of the dashboard that allows you to filter the data per Trust area, so that you can explore the survey results collected by Big River Watch-ers in your patch.
Download the Big River Watch app
You'll need the free app to take part in the next Big River Watch in September 2024. Download before you set off to complete your survey.