Big River Watch took place between  25 April and 1 May, and 3,900 people took part, observing their local waterbody and surrounding wildlife. The results from the April Waterblitz, measuring water quality,  are being compiled and will be combined shortly to see a snapshot of the health of our rivers.

London Rivers Week is coming up – from 30 May to 8 June – with lots of events taking place across London and online. See https://www.thames21.org.uk/london-rivers-week-2025/